Impact case study database
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
UofG engineering research has developed analysis software and provided the accompanying technical support for predicting and assessing critical, life-limiting structural integrity issues for civil nuclear reactors in the UK. These have assisted the operator, EDF, in assessing the ongoing safe operation of ageing nuclear power stations and have supported nuclear safety cases for the continued and future operation of stations. As more reactors approach their end of life, this research has helped to identify future issues and influenced plans for inspections. This work has contributed to both securing the UK’s baseload electricity supply (currently ~17% from nuclear) and achieving the UK’s low-carbon energy targets.
2. Underpinning research
Context: Nuclear power provides ~17% of UK electricity. Seven out of the eight civil nuclear power stations in the UK are the Advanced Gas-cooled Reactor (AGR) design, each with two reactors. Each reactor core is 10m high with a diameter of 10m contained within a concrete pressure vessel. A reactor comprises ~3,000 cylindrical graphite bricks that are connected and stacked vertically into 250 channels. Uranium fuel is inserted into these channels.
The core provides structural integrity for housing the fuel and acts as the neutron moderator. In the reactor’s aggressive environment, the graphite undergoes neutron damage, compromising reactor structural integrity. Assessment and prediction of integrity are critical to safety and planning reactor lifespan. The condition of the graphite reactor core is the major life-limiting factor for nuclear power stations. Routine inspections of the oldest AGR cores have shown significant cracks in the graphite bricks. Numerical models give EDF the ability to predict if these cracks are life-limiting.
EDF have commissioned several research projects since 2011 at UofG (PI: Pearce) and supported two EPSRC Impact Acceleration Account projects, to develop a new predictive modelling capability. In 2016, Pearce was awarded the Royal Academy of Engineering/EDF Energy Research Chair in Computational Mechanics to continue this work.
Research: Brittle crack propagation is an inherently unstable and highly nonlinear process that continues to be the subject of significant scientific attention despite decades of study. Pearce and Kaczmarczyk established a new methodology and computational framework for simulating this phenomenon in the complex environment of a nuclear reactor. The research exploits Configurational Mechanics to describe crack propagation mathematically [3.1, 3.2]. This led to theoretical advances and new numerical methods that were integrated into MoFEM – an open-source finite element analysis software [3.3], developed by Pearce and Kaczmarczyk, that incorporates many of the latest advances in scientific computing.
The implementation in MoFEM enables the continuous advancement of crack fronts to be simulated objectively, without influence from the underlying finite element mesh – i.e. without the need for mesh enrichment, mesh splitting or changes to mesh connectivity. The implicit nature of the analyses, requiring several new algorithmic developments, ensures a robust modelling framework in which numerical errors are closely controlled. This has delivered a modelling capability unmatched by other software packages investigated by EDF, that have failed to provide reliable, realistic, accurate predictions of crack propagation and paths.
The primary driver for crack propagation in the reactor core is the complex internal stress state resulting from long-term exposure of the bricks to the reactor’s aggressive environment. When one brick cracks and deforms, additional cracks occur in adjacent bricks. This can lead to intersecting cracks and fragments that impair reactor control. Therefore, Pearce and Kaczmarczyk extended their formulation to capture internal stress-driven crack propagation and brick-to-brick contact [3.4].
MoFEM has been extensively tested and validated by UofG and EDF (using partners EDF R&D and Jacobs) against standard benchmarks; available literature; experiments commissioned by EDF for this purpose; and routine reactor inspections.
Whilst being subject to continuous development for research purposes, MoFEM is also simultaneously in use as a robust industrial tool.
3. References to the research
Kaczmarczyk, Ł., Mousavi Nezhad, M. & Pearce, C. (2014) Three-dimensional brittle fracture: configurational-force-driven crack propagation. International Journal for Numerical Methods in Engineering, 97(7), pp. 531–550; doi:10.1002/nme.4603 **
Kaczmarczyk, Ł., Ullah, Z. & Pearce, C. J. (2017) Energy consistent framework for continuously evolving 3D crack propagation. Computer Methods in Applied Mechanics and Engineering, 324, pp. 54–73; doi:10.1016/j.cma.2017.06.001 **
Kaczmarczyk, Ł., Ullah, Z., Lewandowski, K., Meng, X., Zhou, X.Y., Athanasiadis, I., Nguyen, H., Chalons-Mouriesse, C.A., Richardson, E., Miur, E., Shvarts, A., Wakeni, M. & Pearce, C.J. (2020) MoFEM: An open source, parallel finite element library. Journal of Open Source Software, 5(45), p.1441. ( doi:10.21105/joss.01441)
Athanasiadis1, I., Kaczmarczyk, L., Ullah, Z., & Pearce, C. J. (2019). Mortar contact formulation for hierarchical basis functions using smooth active set strategy. Paper presented at UK Association for Computational Mechanics Conference, London, UK.
4. Details of the impact
The UK’s electricity supply is generated by a mixture of nuclear, renewables and fossil fuels. The UK government is committed to the continued use of nuclear power, alongside renewable generation and Carbon Capture and Storage, as an important contributor to the nation’s low-carbon energy mix. All of these technologies are important in tackling climate change and diversifying supply, contributing to the UK’s energy security and growth. UofG research has allowed EDF to extend the operation of its fleet of nuclear power stations [5.1], supporting the security of the UK’s electricity supply, with economic and social impact.
Enhanced operational safety through improved analysis and interpretation of reactor core condition
Although EDF have long predicted the onset of cracking in Advanced Gas-cooled Reactors (AGRs), MoFEM represents a key enabling technology that lets EDF fully interpret observed crack paths and predict future crack paths with increased confidence [5.1]. Since the aggressive environment of reactor cores cannot be replicated experimentally, EDF relies on such predictive modelling. As a direct consequence of UofG research, EDF now have a more reliable, safe method of predicting failure modes, leading to increased safety for the public and EDF’s plants.
Over several years, EDF has investigated the ability of other leading computational analysis tools to simulate the onset and propagation of graphite brick cracks. These have all failed to provide reliable, realistic, accurate predictions of crack propagation and paths [5.1]. In 2017, after several years of development, testing and validation, MoFEM was identified by EDF as the primary analysis tool for computer modelling of the development of cracks in graphite bricks [5.1]. MoFEM is the only analysis software able to accurately model existing cracks in a real core environment and to predict future scenarios [5.1]. In 2018, routine inspection of Hunterston B AGR indicated increased graphite brick cracking [5.2], which led to the acceleration of MoFEM’s development.
The combination of UofG expertise and MoFEM have supported nuclear safety cases [5.1, 5.3] for the continued and future operation of nuclear power plants. Specifically:
Hunterston B – predictions of crack shapes and understanding of graphite fragments (resulting from intersecting cracks) contributed to the safety case that enabled both reactors at Hunterston B to be restarted [5.1].
Hartlepool and Heysham 1 – predictions of crack shapes and assessment of the potential for crack arrest in graphite bricks, validated by limited inspections, underpinned the safety case for the future state of the reactor cores, thereby enabling future plant operation [5.1, 5.3].
EDF and Jacobs have already decided to work with UofG and to use MoFEM to assess future challenges (including Heysham 2 and Torness) where “the ability to model crack propagation in irradiated graphite with a complex geometry and complex contact loading would pose an insurmountable challenge to other tools” [5.1].
5. Sources to corroborate the impact
[all supplied in PDF]
Testimonial: Graphite Chief Engineer, EDF Nuclear Generation.
Public statement by EDF Energy on cracking of the Hunterston B reactor core.
Testimonial: Consultant Engineer and Technical Director, Jacobs.
Oxford Economics 2016 Nuclear Activity Report for the Nuclear Industries Association.
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
New methods in computational fluid dynamics (CFD) developed by Prof Barakos have delivered enhancements in understanding of aircraft / wind turbine and aircraft / aircraft wake interactions that have: (i) impacted policy by defining new safe aircraft separations at major airports for fixed and rotary wing aircraft; and (ii) defined safe separations of aircraft and wind turbines. As a result, aircraft separations for landing and take-off have been reduced at Europe’s largest airports, generating millions of pounds of additional revenue per year. The new CFD methods are now also embedded in the design and analysis of Leonardo’s current and future helicopters, providing unsurpassed capability and securing the future of their helicopter division.
2. Underpinning research
Prof Barakos has researched methods to simulate flows around rotary wings of helicopters and wind turbines since his first appointment at UofG in 2001 [3.1–3.6]. The resulting UofG-based CFD code was transferred to the University of Liverpool with Barakos in 2005 [5.1]. Barakos rejoined UofG in September 2015 and has continued to develop his body of work centred around the original UofG CFD code from his 2001–2005 appointment. His CFD methods have impacted the design of new aircraft and have led to new policy guidelines in the regulation of aircraft take-off and landing at airports in the UK and Europe.
Barakos’ innovative research models the complex interaction between fluids and structures. For example, the blades of helicopters and wind turbines experience large structural deformations that affect their efficiency. The methods developed include modules to trim helicopter or wind turbine blades for specific conditions, with an accuracy that reduces the required number of expensive wind tunnel tests and prototypes.
CFD research linked to wakes
Barakos’ CFD research was identified by the Civil Aviation Authority (CAA) as a key technology to allow safe separation criteria to be established between light aircraft and wind turbines, and between light fixed-wing aircraft and helicopters [3.1–3.4]. Wakes are airflow disturbances produced by aircraft and wind turbines that have been implicated in aircraft crashes, where the aircraft inadvertently crossed a wake during landing. Such crashes triggered an investigation by the UK CAA using CFD, in-situ measurements of wakes at East Midlands Airport and flight simulators to quantify the wake encounter hazard and produce pilot guidance. In 2015, this prompted The European Organisation for the Safety of Air Navigation (EUROCONTROL) to use the Barakos CFD expertise at UofG to develop their European Wake Turbulence Categorisation and Separation Minima on Approach and Departure (RECAT-EU). These are guidelines that detail the minimum separations that should exist between different types of aircraft, and the CFD work has enabled separation reductions at major airports.
CFD in modelling flow around helicopters and tilt-rotor blades
Barakos’ work in CFD has given engineers from multinational aerospace company, Leonardo, the ability to model flows around rotary-wing aircraft blades. His long-standing research collaboration with Leonardo to develop advanced CFD methods began at UofG in 2001. An example is their work on the tiltrotor, a type of aircraft that combines the capabilities of aircraft and helicopters. The primary advantage is their vertical take-off and landing capabilities, and they are faster than comparable helicopters. Work is ongoing to allow for efficient and competitive designs of tiltrotor vehicles to enter the market and be certified for civil operations. UofG research focused on blade design optimisation and performance using CFD, under the Innovative Aerodynamic Design Solutions for High-Performance Tiltrotor Aircraft (HIPERTILT) project funded by Leonardo and Innovate UK [3.5, 3.6]. This research is now embedded in the ‘Helicopter Multi-Block' (HMB) CFD tool, extensively used by Leonardo in their design and analysis of helicopters. Consequently, their engineers have the capability to optimise the shape of the tiltrotor wing and blades to deliver higher speed and better fuel utilisation.
3. References to the research
Nayyar, P., Barakos, G. N. and Badcock, K. J. (2007) Numerical study of transonic cavity flows using large-eddy and detached-eddy simulation. Aeronautical Journal, 111(1117), pp. 153–164. (doi: 10.1017/S0001924000004413)
Beedy, J., Barakos, G., Badcock, K., & Richards, B. (2003). Non-linear analysis of stall flutter based on the ONERA aerodynamic model. The Aeronautical Journal (1968), 107(1074), 495–510. (doi: 10.1017/S0001924000134001)
Barakos, G.N. and Drikakis, D. (2003) Computational study of unsteady turbulent flows around oscillating and ramping aerofoils. International Journal for Numerical Methods in Fluids, 42(2), pp. 163–186. (doi: 10.1002/fld.478)
Allan, M. R., Badcock, K. J., Barakos, G. N. and Richards, B. E. (2004) Wind-tunnel interference effects on a 70 degrees delta wing. Aeronautical Journal, 108, pp. 505–513. (doi: 10.1017/S0001924000000336)
Wang, Y., White, M. and Barakos, G.N. (2017) Wind-turbine wake encounter by light aircraft. Journal of Aircraft, 54(1), pp. 367–370. (doi: 10.2514/1.C033870 )
Barakos, G. N. and Gates, S. (2017) Tiltrotor CFD part I: validation. Aeronautical Journal, 121(1239), pp. 577–610. (doi: 10.1017/aer.2017.17)
4. Details of the impact
Prof Barakos’ CFD research at UofG has delivered: a) aircraft safety and policy changes; b) increased airport capacity; c) enhanced design and analysis capability at Leonardo.
Impacts on CAA policy guidance and enhanced safety
Barakos’ CFD research expertise, founded on work from his initial UofG appointment [5.1], has directly led to new guidance from the CAA in the CAP 764 document, ‘CAA Policy and Guidelines on Wind Turbines’ (2016), stating that light aircraft pilots should remain 5 rotor diameters away from wind turbines with diameter of less than 30m [5.2 pp32–34, 5.3]. This is a new rule based entirely on Barakos’ research. This policy influences the activity of aircraft pilots, wind farm developers, local planning authorities and farmers using crop-spraying aircraft operating close to the ground and near wind turbines [5.2, 5.3]. The guidance enhances the safety of all parties and outlines a means of approving planning of wind farm development [5.2 p38]. This is important to the UK government as it tries to balance priorities of safety, renewable energy and the economic importance of aviation to the UK [5.2 p8].
Barakos’ research featuring CFD to understand the effects of wakes has been adopted by EUROCONTROL to develop RECAT-EU (European Wake Turbulence Categorisation and Separation Minima on Approach and Departure) [5.3, 5.4]. In September 2015, RECAT-EU guidelines, which replaced previous wake vortex separation rules, were informed by Barakos’ CFD models of aircraft separations to define new safe aircraft separations [5.3, 5.4 p7 para 6]. RECAT-EU has been adopted by air traffic control in Europe’s largest airports, including Paris Charles de Gaulle (CDG) where RECAT-EU has been operating 24/7 since March 2016 [5.5, 5.6]. Heathrow, Schiphol, Leipzig-Halle and Le Bourget also use RECAT-EU. Deployment has enhanced airport safety and capacity, resulting in a significant increase of aircraft movements [5.6, slide 4].
Barakos’ research and the RECAT-EU guidelines also enable helicopters to blend efficiently and safely with fixed-wing traffic (the US equivalent of RECAT-EU does not allow this), promoting better use of airports and higher safety standards. Recognising this, Barakos was awarded funding for a research project from the Network for Innovative Training on Rotorcraft Safety (NITROS; 2017) [5.7], focussed on using CFD and resulting wake information to determine the safe proximity of aircraft to wind turbines [5.6].
Enhanced design capability at Leonardo
Barakos’ blade optimisation research (HIPERTILT) programme has provided high fidelity CFD design tools which allow engineers at Leonardo to explore new design concepts in the development of tiltrotor aircraft [5.8, p1 para 4]. The tiltrotor vehicle is a concept that with modern technology is set to change the way we fly, covering the gap between helicopters and fixed-wing aircraft in range and speed. Tiltrotor vehicles present capabilities to emergency and relief operations including air-ambulances and the distribution of humanitarian aid. This vehicle has been the top priority in the UK National Aerodynamics Committee agenda and top priority for Leonardo within CleanSky and CleanSky2 (EU programmes developing innovative technology to reduce the environmental impact of aircraft) [5.8, p1]. Barakos’ UofG research was shared with Leonardo to enable optimal rotor analysis and design [5.8, p2 para 1]. Within the HIPERTILT project, training sessions for Leonardo engineers ensured that new designs were tested using Barakos’ CFD tools [5.8, p2 ‘Approach to Impact’]. The 700 tiltrotor engineers are part of a team of 3,000 Leonardo staff working in Yeovil (Somerset, UK) [5.8, p1 para 3]. The relationship with Prof Barakos at UofG is ‘strategically important’ to Leonardo [5.8, p3 para 5], securing their future and the UK’s tiltrotor industry.
Increased airport capacity
RECAT-EU allows airports to recover more rapidly from adverse weather conditions and can increase runway throughput by over 5% [5.4 p21]. RECAT-EU has increased the number of aircraft taking off from European airports, which is linked directly to considerable economic impacts. The Director of Navigation Services for Paris CDG explained that the airport now has an increased throughput of aircraft [5.9]. “We are very proud of having deployed this new operational concept at one of the busiest airports in Europe. This project is the result of close cooperation with EUROCONTROL. It has brought quick wins in terms of safety and capacity: thanks to RECAT-EU, runway throughput at Paris-CDG has increased by 2−4 aircraft movements per hour at peak periods.” Given that each flight landing and taking off from CDG must pay a fee in the region of EUR400, CDG alone has seen an increased annual revenue of several million euros from RECAT-EU [5.10 p1]. Similarly, Heathrow have an average of an extra 17 aircraft movements per day (6,205 movements/year), generating increased revenue from RECAT-EU [5.11, p19].
5. Sources to corroborate the impact
[all available as PDFs unless otherwise indicated]
University of Glasgow CFD code transfer acknowledgement
CAP 764 document ‘CAA Policy and Guidelines on Wind Turbines’
Testimonial: Head of Airports, EUROCONTROL
RECAT-EU information for stakeholders document
EUROCONTROL Press Release: RECAT-EU now in use at Paris Charles de Gaulle 24/7
Presentation: RECAT EU for Paris-CDG and Le Bourget
Publication: NITROS: An Innovative Training Program to Enhance Rotorcraft Safety
Testimonial: Head of UK Strategic Development, Leonardo Helicopters,
EUROCONTROL Press Release: RECAT-EU at Paris-CDG, a first in Europe
Groupe ADP (Aeroports de Paris): Landing fees in Paris
NATS Briefing for Heathrow Crew: Enhanced Time Based Separation (ETBS) & RECAT EU
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- Yes
1. Summary of the impact
Bowel cancer has become the third most prevalent cancer in China, with >375,000 new cancers/year and ~190,000 deaths/year. Barriers to early detection include the lack of accurate and sensitive screening tests. To overcome this, UofG research developed the first, digital home-based bowel screening test, produced by UofG spin-out company, ModeDx. Oxford MEStar acquired ModeDx (2016) and developed the test for Chinese markets, led by UofG’s Prof Cooper, as Advisory Board Chair. Having passed clinical trials, gained CE marking and Chinese National Medical Products Administration approval, the device is being mass-produced as a digital health screening product to address the rising challenge of recent growth in bowel cancer prevalence, attributed to China’s aging population and a more westernised lifestyle with increased dietary fat, obesity and physical inactivity.
2. Underpinning research
The Advanced Medical Diagnostics Group in the School of Engineering has developed new biosensors technologies, based upon electrochemical systems. Led by Prof. Jon Cooper, this research started in 1999, supported by a GBP3.2 million DTI-EPSRC Foresight LINK "Lab on a Chip" programme. The project was coordinated by Dr Derek Craston (now The UK’s Government Chemist) and was carried out in collaboration with GlaxoSmithKline (GSK), Unilever and Kodak together with a group of small and medium-sized enterprises, including Epigem.
During this period, Cooper's research enabled the development of new, advanced microfabrication techniques for microfluidic on-chip sensing and interconnect technologies for microfludics. Subsequently working with Prof Cumming’s research group, Cooper integrated the biosensing technologies into analytical microfluidic devices, with low-power complementary metal-oxide-semiconductor (CMOS) application-specific integrated circuits (ASICs) for both veterinary and medical diagnostic as well as cell-based assays [3.1].
Following this research, Profs Cooper and Cumming investigated the use of sensors and optimised packaging in a fully functional, ingestible prototype pill-like diagnostic device. This work and the earlier DTI-EPSRC research, was instrumental in producing a pill-based sensor device [3.2-3.4], composed of two sensors that measured pH and temperature, reflecting the physiological environment in the gastrointestinal tract (as indicators for disease) [3.2]. Each sensor was controlled by an ASIC, that incorporated a power saving serial bitstream data compression algorithm that was found to extend the lifetime of the pill by 70%. An integrated radio transmitter was used to send the signal to a local receiver, prior to acquisition on a computer. A permanent magnet was also incorporated in the device to enable non-visual tracking of the system within the gastrointestinal tract.
The pill-based sensor presented challenges when ingested, but the underpinning circuit research [3.1-3.4] and radiotelemetry sensor design [3.2, 3.3] were applicable to the development of sensors that could be incorporated into devices to detect blood in stool (an indicator of bowel cancer). Adaptation of the existing pill-based sensor for use in a bowel cancer screening device was inspired by a GBP1,390,000 ‘Integrated Diagnostics for Environmental and Analytical Systems’ grant awarded by the Scottish Funding Council (2000).
This led Prof Cooper to develop intellectual property and design and develop the first digital home-based bowel screening test, using the blood’s peroxidase activity. In short, haemoglobin, present in blood catalysed redox electrochemical reactions that could be detected at the biosensor using the miniaturised ASIC previously developed. As a result, UofG spin-out company, ModeDx, was launched in 2008 to commercialise the diagnostic product measure® BOWEL HEALTH which became available for sale across the UK (with the devices eventually being marketed and sold on the high street through Boots, and on-line through Amazon).
3. References to the research
Igata, E., Arundell, M, Morgan, H, and Cooper, J.M. (2002). Interconnected Reversible Lab-on-a-Chip Technology. Lab on a Chip, 2, pp. 65-69. ISSN 1473-0197 (doi: 10.1039/b200928p) ** [Available on request from HEI]
Johannessen, E.A., Wang, L., Reid, S.W.J., Cumming, D.R.S., and Cooper, J.M. (2006). Implementation of Radiotelemetry in a Lab-in-a-Pill Format, Lab on a Chip, 6, pp. 39-45. ISSN 1473-0197 (doi: 10.1039/b507312j) ** [Available on request from HEI]
Johannessen, E.A., Wang, L., Wyse, C., Cumming, D.R.S. and Cooper, J.M., (2006). Biocompatibility of a lab-on-a-pill sensor in artificial gastrointestinal environments. IEEE Transactions on Biomedical Engineering, 53(11), pp.2333-2340.(doi: 10.1109/TBME.2006.883698) (eprints id: http://eprints.gla.ac.uk/3881/)
Cumming, D.R.S., Hammond, P.A, and Wang, L. (2010) Wireless endoscopy: technology and design. Microengineering in Biotechnology. pp. 221−246. (doi: 10.1007/978-1-60327-106-6_10) [Available on request from HEI]
*=best indicators of quality
4. Details of the impact
UofG spin-out company, ModeDx, was launched in 2008 to commercialise measure® BOWEL HEALTH. Despite the product showing potential and achieving sales online and in the high street, investors recommended adapting it for use in the rapidly emerging healthcare market in China. In 2016, ModeDx and the IP/technology underpinning the measure® BOWEL HEALTH device were acquired by Oxford MEStar (a company that enables the translation of products and services from the UK to China). Acknowledging Cooper’s expertise and the technology he developed at UofG, Oxford MEStar invited Cooper to take the role of Chair of the Advisory Board, where he plays a key leadership role in the continuing development of measure® [5.1 page 3]. The impact arising from Cooper’s research at UofG is primarily commercial – a successful spin-out company was created, which following its acquisition, has contributed to innovation in China through the design of new products to address barriers to bowel cancer screening.
The commercial value of the technology underpinning the UofG device was highlighted by a successful funding round in 2014 [5.2], which followed GBP600,000 of funding in 2010 [5.3] and GBP1,100,000 in 2012 [5.4]. In February 2014, ModeDx announced that it had received a European CE mark for the measure® BOWEL HEALTH product, and that it had successfully completed a significant funding round led by new investor, Longwall Venture Partners. Following securing the funding to develop the company, the Head of the Scottish Investment Bank (SIB), commented, “ SIB, through its Scottish Venture Fund, is delighted to further support this ambitious Scottish life sciences company. MODE has shown a commitment to innovation and the development of new products that enhance healthcare provision, and we are pleased to be able to build on previous Scottish Enterprise support from SMART:SCOTLAND to help them accelerate their growth plans” (2014) [5.2]. The CE Certification was received following review by an external notified body and enabled MODE to *“sell measure® into the ‘over the counter’ home healthscreening market”*. The approval followed MODE’s earlier achievement of ISO 9001 and ISO 13485 quality management systems [5.2].
At the time of acquisition, Oxford MEStar was quoted in a press release: “We are excited about the long-term commercial potential of using this technology. We believe the IP developed by Mode, a proprietary electrochemical detection technology, is an important component that we can use to develop handheld test devices manufactured at low cost and in high volumes… We will continue to work in partnership with the University of Glasgow and maintain a corporate presence in Scotland” [5.5].
A key commercial goal of Oxford MEStar is to bridge the gap between UK biotech companies and Chinese markets. Oxford MEStar reported: *“We believe there is enormous potential in this market for China; the current technology in China is not restrained by a lack of funding, but its lack of advanced technology and resources, which are readily available to Oxford MEStar. We are equipped with the right resources, and an abundance of knowledge and expertise to bring British bio-businesses and technology to the Chinese healthcare market” [5.6]. By acquiring the technology developed by Cooper and working with the UofG, Oxford MEStar has been able to meet its commercial goal of taking UK biotechnology advances to China [5.6]. Building on this goal, Oxford MEStar have further developed the device, with guidance from Cooper, to make it more suited to Chinese markets [5.1].
In China, the incidence of bowel cancer has risen in recent years [5.1], and while some countries have strong participation in bowel screening programmes, in Asia there is low public awareness and little support by health authorities for bowel screening. Following the acquisition of ModeDx, Oxford MEStar are now mass-producing measure® in China via Scottech Medical Co. Ltd (Oxford MEStar’s sister company), in Tianjin [5.1 page 1]. Building upon the original UofG research, an improved version of the product was developed for launch in China. In order to secure this place in the Chinese medical diagnostics market, Oxford MEStar carried out clinical trials in two hospitals in China [5.1 page 2]. These trials showed that measure® can detect faecal occult blood, using the existing hospital-based diagnostics as the gold standard/reference [5.1 page 2]. In December 2019, Cooper evaluated the results from these hospital trials, which represented a critical step in the device gaining Chinese Food and Drug Administration/NMPA approval [5.1 page 2]. The success of the measure® product has directly led to Scottech Medical increasing its staff from 5 to 18 between 2016 and 2020 [5.1 page 1].
Following measure® being approved in China, Oxford MEStar are further developing the original UofG-based technology to function with Bluetooth, creating new products that are compatible with smartphone and tablet apps [5.1 page 3]. This is an important adaptation made by Scottech Medical, enabling the device to fit with society’s changing needs around digital health and to make the device particularly useful in low-resource areas and community health centres [5.1 page 3]. The versatility of the device is enabling adaptations to be made so that products remain at the forefront of technological advances, with Cooper’s leadership being crucial to the continued commercial viability of Scottech Medical [5.1 page 3].
5. Sources to corroborate the impact
(PDF uploaded for all the documents listed)
Letter of support from Deputy General Manager, Scottech Medical
‘Parkwalk closes Opportunities Fund and syndicate investment into Mode Diagnostics’ – Press release from Parkwalk Advisors. February 2014. https://parkwalkadvisors.com/2014/02/mode-dx-2/
‘MODE Diagnostics Ltd – Secures £600,000 funding to develop home diagnostic products’- Press release from IPG Group Plc. September 2010. https://www.ipgroupplc.com/media/portfolio-news/2010/2010-09-16
‘Mode DX ltd - MODE Diagnostics attracts over £1,100,000 funding to develop health & wellness home diagnostic products’ – Press release from IPG Group Plc. July 2012. https://www.ipgroupplc.com/media/portfolio-news/2012/2012-07-02
‘Oxford MEStar to develop diagnostic products in cancer and infectious diseases using intellectual property acquired from University of Glasgow spin-out, Mode Diagnostics Limited’ – Press release from Oxford MEStar. August 2016. http://www.oxford-mestar.com/oxford-mestar-mode-diagnostics-limited/
‘Bridge to China - China is becoming the second largest economy in the world; Oxford MEStar is seeking this opportunity, and is in the process of building such technology transfer relationships with Chinese from British bio-businesses’ – from Oxford MEStar website. http://www.oxford-mestar.com/products/bridge-to-china/
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
UofG is a world-leader in Electron beam lithography (EBL) research, resulting in one of the most advanced, large-area, high-resolution capabilities in the world. Data communication is one of the technologies central to modern life. UofG’s EBL is now one of the core technologies for creating nanoscale patterns, a key fabrication step in the manufacture of chips used in of novel semiconductor lasers and grating-based devices for data communications (datacomms) products.
This research has enabled UofG-owned Kelvin Nanotechnology (KNT) to expand its business: [text removed for publication]. KNT also manufactures gratings for the cutting-edge quantum markets, enabling customer TMD Technologies Ltd produce the world’s first portable grating magneto-optical trap for quantum sensing and timing applications.
2. Underpinning research
The demand for optical gratings
The Internet underpins modern society. With global traffic currently increasing at a compound annual growth rate of 26%, the internet is underpinned by optical fibre communications – for long and short haul data transfer, datacentres, and fibre to the home. Distributed feedback (DFB) lasers are core chip components used in optical fibre communications. These semiconductor lasers emit a single wavelength laser beam enabling data transfer at higher speeds and over longer distances. The single wavelength is achieved through specially designed optical gratings, essential in providing feedback for the laser. Many modern networks, such as those underpinning fibre-optic broadband, require multiple, densely packed wavelengths and high data rates (>25 GHz). Electron beam lithography (EBL), and notably the EBL capability developed at UofG, uniquely offers the precision to develop and process specialist gratings that enable transmission of data at these densely packed wavelengths and high data rates.
The development of EBL at UofG
Researchers at UofG have been at the forefront of advances in nanofabrication since 1978. Integrating research efforts in design, growth of films, modelling and fabrication, UofG has sought to achieve the highest possible level of reproducibility in the fabrication of devices, made possible by its use of EBL. In 1990, UofG became the first UK academic institution to have a commercial EBL system; this capability has been continuously developed and tested ever since.
UofG research in EBL development
Research at UofG has led to the development of its current world leading EBL capability and an understanding of EBL’s diverse applications. For example, state-of-the-art EBL systems require a high degree of alignment within the electron beam, the precision of which is critical to fabricating features with nanometre resolution [3.1]. UofG research identified that Penrose tilings can significantly reduce field stitch errors, facilitating the production of large area gratings with minimal misalignments, thus reducing unwanted optical artefacts. These tilings have subsequently been applied to enhance the EBL facility at UofG.
UofG has used EBL to fabricate DFB and Distributed Bragg Reflector (DBR) gratings in several novel laser applications. Of particular note is the demonstration of a single chip containing four lasers, each operating at a different wavelength, where the wavelengths are determined by the pitch of the DFB grating [3.2]. This shows that first-order DFB gratings for lasers operating at different wavelengths used for datacomms can be laid out across a wafer to a desired design. UofG has gone on to use EBL defined gratings in many novel laser-based chips, such as for the fabrication of narrow linewidth lasers [3.3], to generate light modulated at THz frequencies, and for the fabrication of DFB laser arrays whose wavelengths are spaced to match that of the International Telecommunication Union (ITU) grid. UofG has also shown that the in-house EBL tool can create specialist gratings for visible laser diodes [3.4]. UofG’s ongoing research programmes in lasers with EBL-defined DFB gratings has demonstrated that the in-house EBL tool can create reproducible, specialist gratings for laser diodes in volume, giving companies the confidence to use KNT to fabricate their gratings.
The advanced resolution of the UofG EBL tool has been essential in facilitating new applications of EBL, driving UofG research in both atomic force microscopy (AFM) and quantum technologies. For example, the in-house UofG EBL tool has been used in the batch-production of scanning electrochemical probes for AFM applications producing probes which are suitable for simultaneous electrochemical constant distance and topographical imaging [3.5]. More recent UofG research has shown the versatility of EBL in atomic cooling applications for quantum technologies [3.6], which are increasingly central to the tool’s commercial exploitation.
3. References to the research
Docherty, K.E., Thoms, S., Dobson, P. and Weaver, J.M.R. (2008) Improvements to the alignment process in a commercial vector scan electron beam lithography tool. Microelectronic Engineering, 85(5–6), pp. 761–763. (doi: 10.1016/j.mee.2008.01.081)
Hou, L., Haji, M., Akbar, J, Marsh, J. H. and Bryce, A. C. (2011) CWDM source based on AlGaInAs/InP monolithically integrated DFB laser array. Optics Letters 36, pp. 4188–4190.(doi: 10.1364/OL.36.004188)*
Hou, L., Haji, M., Akbar, J, Marsh, J. H. (2014) Narrow linewidth laterally coupled 1.55 μm AlGaInAs/InP distributed feedback lasers integrated with a curved tapered semiconductor optical amplifier. Optics Letters 37(21), pp. 4525–4527. (doi: 10.1364/OL.37.004525)
Slight, T. J., Yadav, A., Odedina, O., Meredith, W., Docherty, K. E., Rafailov, E. and Kelly, A. E. (2017) InGaN/GaN laser diodes with high order notched gratings. IEEE Photonics Technology Letters, 29(23), pp. 2020–2022. (doi: 10.1109/LPT.2017.2759903)
Dobson, P., Weaver, J., Burt, D., Holder, M., Wilson, N., Unwin, P. and Macpherson, J. (2006) Electron beam lithographically-defined scanning electrochemical-atomic force microscopy probes: fabrication method and application to high resolution imaging on heterogeneously active surfaces. Physical Chemistry Chemical Physics, 8, pp. 3909–3914. (doi: 10.1039/b605828k)
Nshii, C.C., Vangeleyn, M., Cotter, J.P., Griffin, P.F., Hinds, E.A., Ironside, C.N., See, P., Sinclair, A.G., Riis, E. and Arnold, A.S. (2013). A surface-patterned chip as a strong source of ultracold atoms for quantum technologies. Nature nanotechnology, 8(5), pp.321–324. (doi: 10.1038/nnano.2013.47)*
*=best indicators of quality
4. Details of the impact
Nanofabrication plays a key role in the design and manufacture of the silicon chips that form essential components of modern data communications products, such as smartphones.
KNT was founded in 1997 as a wholly owned University company to provide commercial nanofabrication solutions to industry and academia, delivered through the James Watt Nanofabrication Centre (JWNC) at UofG. UofG research has led to the development of one of the most advanced electron beam lithography (EBL) capabilities in the world, enabling Kelvin Nanotechnology Ltd (KNT) to offer customised EBL services for applications as diverse as laser grating writing, transistor gate writing and nanotextured surfaces. The impacts are primarily economic, creating new jobs, and benefiting its commercial customers around the world.
Economic impacts for KNT
KNT offers fabrication services on a commercial basis, with the EBL capability being central to the company’s commercial success [5.1]. [Text removed for publication.]
Economic impacts for KNT’s customers
Substantial economic impacts have arisen for KNT’s customers in the DFB laser space. [Text removed for publication.] These chips underpin the transceiver industry. Transceivers are a combination of transmitters and receivers in a single package, used in telecomms infrastructure and underpinning mobile phone technology and fibre networking. [Text removed for publication.] Transceiver technology using KNT technology delivers broadband internet to around 2.1 million businesses and homes per year.
KNT are also using grating technology [3.6] to develop future Quantum Technology products. KNT produce the gratings used in an innovative product called gMOT, created in a partnership led by KNT with UofG, the University of Strathclyde and TMD Technologies (London). gMOT is the world’s first portable grating magneto-optical trap (MOT) for compact cold atom systems and is used to produce ultracold atoms [5.5]. These ultracold atoms have primary applications in atomic clocks. “Atomic clocks are an important facet of our everyday lives in this fast-expanding quantum world. [They] have the potential to provide a valuable alternative and back-up to global navigation satellite systems (GNSS) used as either stand-alone timing solutions on a platform or as ‘hold-over’ clocks should the GNSS signal become unavailable, unreliable or degraded.” – Head of Business Development at TMD [5.5] . The Royal Academy of Engineering estimate that around 6–7% of the GDP of Western countries is dependent on GNSS and the proportion will continue to rise, with accurate timing becoming a ubiquitous requirement for modern technology and business operations [5.6 p3 ‘Foreword’]. gMOT provides a portable solution to back up GNSS and its role in the UK economy.
The unique UofG contribution to gMOT is the grating at the heart of the gMOT cell [5.1]; without it, the system would not work. Thus, there are economic impacts for TMD who market gMOT [5.7]. [Text removed for publication.]
By working with KNT to produce gMOT, TMD have been able to join the UK’s National Quantum Technologies Programme (NQTP), contacts from which were the first to buy gMOT [5.7]. The NQTP is a government initiative involving investment of ~GBP800 million over 10 years to accelerate the translation of quantum technologies into the marketplace [5.8 paras 3 and 6]. Joining NQTP has given TMD access to funding and showcase opportunities they would not have had otherwise [5.7]. The NQTP is aligned with investments from the UK Defence, Science and Technology Laboratory and the UK Ministry of Defence to develop demonstrators of quantum timing and navigation devices within 3–5 years [5.9 para 6]; contributing to this network is thus enabling TMD to help the UK government to meet its objectives [5.7].
5. Sources to corroborate the impact
Testimonial: CEO of KNT
Presentation: KNT Core Services (2019)
Presentation: Frost & Sullivan ‘Drivers, Opportunities and Developments’ (2019)
Presentation: KNT ‘DFB Laser Grating Market’ (2020)
Press release: TMD announces a ‘world’s first’ in portable cold atom technology
Report: The Royal Academy of Engineering ‘Global Navigation Space Systems: reliance and vulnerabilities’
Testimonial: Head of Business Development at TMD
Government Response document: Eleventh Special Report – Appendix
NQTP Overview of programme – UK Quantum Technology
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- Yes
1. Summary of the impact
Fibre-based communication is pivotal to global communication and connectivity and requires high-quality lasers to drive the increasing demand. Collaboration between Prof Kelly and Compound Semiconductor Technologies (CST) Global transformed their business model to allow them to become a world-leading semiconductor laser supplier, with an 88% turnover increase (2016–2017). The research led to high-performance, low-cost laser devices for next-generation optical access networks and novel products for home and datacentre markets. Consequently, CST Global was acquired by Sivers IMA for ~GBP12 million (2017) and staff numbers have increased from 11 to 70. >GBP1 million of laser chips were sold each month to customers around the world, increasing internet access to households through fibre-to-the-home (FTH) connectivity.
2. Underpinning research
Professor Kelly’s EPSRC project on High Power, High Frequency Mode-locked Semiconductor Lasers (EP/E065112/1) enabled him to build on a strong semiconductor lasers capability to design, fabricate and test indium phosphide-based lasers. The fundamental research [3.1, 3.2, 3.3] generated the necessary understanding of device behaviour and the capability to simulate and therefore design devices according to the intended application. For example, the development of high-power devices increased the output power of the laser from 50 to 200mW, opening up new applications such as automotive LIDAR (light detection and ranging).
A collaboration was established with CST Global in 2011, supported by a UofG First Step Award. CST Global made a strategic business decision to move from being a foundry service to manufacturing their own products. They were already familiar with Prof Kelly’s expertise, and the University had the skills, tools and test equipment to design, develop and characterise devices manufactured by CST Global. This allowed them to work together to quickly develop initial data for a potential Gigabit Passive Optical Networks (GPON) laser product that was presented to customers.
Given positive market feedback, a Knowledge Transfer Partnership (KTP) was initiated to focus on the delivery of the first product, a high-performance, low-cost laser device for next generation optical access networks. The KTP associate, Dr Horacio Cantu, focused on understanding the electrical and parasitic behaviour of the device to allow performance optimisation. During this project, three semiconductor laser products were developed and introduced into the marketplace [5.4].
The research collaboration was then extended to include research into low-cost optical/radio interfaces, advanced fabrication techniques and blue laser diodes. The blue laser research (supported by EPSRC / Innovate – CoolBlue EP/R001774/1) resulted in the first practical blue semiconductor distributed feedback (DFB) laser.This was made possible by novel gratings designed by Prof Kelly and fabricated in the University’s James Watt Nanofabrication Centre. Innovate UK projects and direct funding by CST Global of Prof Kelly resulted in the development of 10 Gbit/s and 25 Gbit/s laser devices and the development of etched facets.
The range of projects and the fact that they are predominately Innovate UK-funded demonstrates the commercial focus of the ongoing collaborative research. Applying the understanding developed in the research projects to device designs and improvements to key device parameters led to further application-oriented publications [3.4, 3.5, 3.6].
A recent illustrative example of commercialisation of basic research is the work on advanced etching. A new semiconductor etch tool was made available to Prof Kelly via a GBP3 million EPSRC manufacturing grant. An industrial PhD scholarship (2014–2018), co-funded by CST Global, developed advanced etching techniques on this tool and applied these techniques to the development of etched facets. This is a technology that had the potential to greatly reduce the cost of CST Global’s manufacturing process and led to an Innovate UK project (LOWPASS) which successfully took this to production. The process is now used by CST Global in high-volume manufacturing and is set to become ubiquitous in their products.
3. References to the research
Green, R.P., Haji, M., Hou, L., Mezosi, G., Dylewicz, R. and Kelly, A.E. Fast saturable absorption and 10 GHz wavelength conversion in Al-quaternary multiple quantum wells. Optics Express. (2011) 19(10), pp.9737–9743; http://eprints.gla.ac.uk/53738/; doi:10.1364/OE.19.009737 **
Haji, M., Hou, L., Kelly, A.E., Akbar, J., Marsh, J.H., Arnold, J.M. and Ironside, C.N. High frequency optoelectronic oscillators based on the optical feedback of semiconductor mode-locked laser diodes. Optics Express. (2012) 20(3), pp.3268–3274; http://eprints.gla.ac.uk/62080/; doi:10.1364/OE.20.003268
Akbar, J., Hou, L., Haji, M., Strain, M.J., Marsh, J., Bryce, A.C. and Kelly, A. High power (130 mW) 40 GHz 155 µm mode-locked distributed Bragg reflector lasers with integrated optical amplifiers. Optics Letters. (2012) 37(3), pp.344–346; http://eprints.gla.ac.uk/61323/; doi:10.1364/OL.37.000344
Cantú, H.I., McKee, A., Eddie, I., Kelly, A.E.. Frequency Selectivity in Directly Modulated Distributed Feedback Laser Transmission Operation Using an Impedance Match Tuning Network IEEE Journal of Quantum Electronics. (2014) 50 (2), 106–111; http://eprints.gla.ac.uk/96463/; doi:10.1109/JQE.2013.2295548 **
Slight, T.J., Odedina, O., Meredith, W., Docherty, K.E., Kelly, A.E. InGaN/GaN distributed feedback laser diodes with deeply etched sidewall gratings IEEE Photonics Technology Letters. (2016) 28 (24), 2886–2888; http://eprints.gla.ac.uk/134084; doi:10. 1109/LPT.2016.2624500
Cantú, H.I., McKee, A., Childs, D., Watson, S. and Kelly, A.E. Dynamic performance of detuned ridge waveguide AlInGaAs distributed feedback laser diodes. Microwave and Optical Technology Letters. (2017) 59(6), pp.1468–1470; http://eprints.gla.ac.uk/140554; doi:10.1002/mop.30561
4. Details of the impact
Over the past decade, the world has become increasingly connected, as high-speed fibre optic digital communication brings Internet access to households around the globe with fibre-to-the-home (FTH) connectivity. The roll-out of this technology depends on fast, powerful, low-cost lasers to facilitate the data transfer over these connections. The collaboration between UofG’s Prof Kelly, and CST Global has enabled them to become a world-leading supplier of semiconductor lasers [5.1, 5.2]. Whilst the impact of this research is primarily economic, secondary impacts exist through CST Global being able to meet the societal demand for access to fibre optic broadband and cable TV.
CST Global acknowledge that Prof Kelly’s expertise is what drew them to collaborate with UofG: The Former CEO of CST Global: "[Kelly] is a world-authority on gallium nitride and indium phosphide optical devices, with both academic and commercial experience in these areas. He has successfully commercialized a range of technologies, critical to next-generation, high-speed applications, where CST Global is currently producing and developing new products” [5.3].
Prior to its collaboration with UofG, CST Global was a foundry business, providing custom fabrication services [5.1 paragraph 4]. Expansion of CST Global was dependent on a business model change to selling products instead of services. The skills and capability available at UofG in high-speed communications systems testing, device modelling and advanced characterisation (built up via Scottish Research Pool investment and Research Council project funding) allowed CST Global to develop products through funded collaborations [5.1 paragraph 4, 5.4].
The close working relationship with UofG has been maintained since 2011 through research collaborations, secondments and KTPs. One of the first collaborations was a Knowledge Transfer Partnership: 'The main achievement for the project was the successful development of the 10Gbit/s product to a maturity where it was shipping to customers as samples and towards the end of the project as product. The significance of this has not to be underestimated. [This] has allowed CSTG to move up the value chain in terms of product complexity and therefore margin’ [5.4]. The former-KTP Associate is now an employee of CST Global and continues to liaise with UofG and transfer knowledge to CST Global’s engineers [5.1 paragraph 5].
The ongoing partnership has resulted in three new semiconductor laser product lines being introduced, with more in development through Prof Kelly’s secondments to the company. These products generated >GBP10 million in orders during 2016 alone [5.1 paragraph 5], which enabled CST Global’s expansion into the Asian market and up the value chain to higher profit margin products, moving from USD0.2 per unit to USD2 per unit, with the potential to increase to USD20 per unit once the 25 Gbit/s product line has been qualified [5.1 paragraph 5]. CST Global are now among the top suppliers in the world, with most of their market in China and India [5.1 paragraph 6, 5.2]. Due to its strong performance and potential for growth, CST Global was acquired by Sivers IMA in April 2017 for ~GBP12 million [5.1 paragraph 6, 5.2]. CST Global’s success from collaborating with UofG was the key driver of this acquisition, which has since led to further expansion of CST Global and also improved funding access [5.1 paragraph 6].
As a consequence of the critical UofG collaboration, CST Global has become Europe’s highest volume laser supplier, shipping GBP1 million laser chips/month. CST Global currently employs 70 chip fabrication staff at a facility near Glasgow [5.2]. Its annual sales turnover for 2015/16 was ~GBP3.5 million; as a consequence of the acquisition, turnover was 88% higher in 2017 (GBP6.7 million) [5.1, 5.5, 5.6].
CST Global links with UK supply chain companies, thus providing a vibrant industry sector. CST Global has been a partner in Horizon 2020 project iBrow, enabling enhanced wireless broadband data transfer, with industry partners including IQE, Alcatel-Lucent and InescTec, and is leading two Innovate UK-funded projects, CoolBlue and LowPass, working with UofG. CST Global’s strong connection with UofG has kept the company ‘ at the forefront of the III-V compound semiconductor market’ [5.7].
In 2017, through an EPSRC Impact Accelerator Account grant, Prof. Kelly was seconded to CST Global to develop capability in the 25 Gbit/s laser market supplying the datacentre market, a high-growth area. In 2018, the company announced alpha testing of 25 Gbit/s lasers that will command far higher prices than existing products while maintaining the same chip manufacturing footprint, delivering a higher profit margin for the same manufacturing yield [5.8].
Demand for such products is rapidly growing in China [5.9] where the number of cable TV subscribers is expected to rise to 353 million by 2022 [5.10, page 1]. CST Global’s ability to meet China’s increased demand for internet-enabled TV is enabled by collaboration with Prof Kelly at UofG.
5. Sources to corroborate the impact
Testimonial from former CEO of CST Global
Testimonial from current CEO of CST Global
CST Global press release: Dr Tony Kelly to consult with CST Global on next- generation, high-speed, opto-electronic technology
Knowledge Transfer Partnership University of Glasgow/CST Global, final report.
CST Global press release: confirmed its audited turnover had increased by 88%, to GBP6.7 million in 2017.
Press release: Sivers IMA Positive Growth
Powerful partnership Interface shortlisting – Shortlist for Scottish Knowledge Exchange Award 2019 for academic-business collaboration
CST Global proves the feasibility of its uncooled, ridge waveguide, 25Gbps, CWDM, DFB lasers press release
CST Global targets Chinese market with new comms laser technology – Optical Connections News
Online Video Industry in China Report (2018)
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
Infectious diseases are the leading cause of mortality amongst people in low- and middle-income countries (LMICs). High disease mortality rates are often linked to prohibitive cost and resource obstacles to diagnosis. UofG researchers have developed a unique paper-microfluidic ‘origami’ diagnostic platform (manufactured by UK SME, Epigem) that uses lateral flow to bring rapid and accurate molecular testing to low-resource under-served rural areas in Uganda and beyond. The device enables DNA analysis, which is normally performed in a laboratory, to be carried out in rural under-served communities more rapidly and accurately than the current gold-standard field-based methods. Both healthcare and policy have changed in Uganda as a result of the devices being used to detect malaria and schistosomiasis, with economic and social impacts for stakeholders/partners.
2. Underpinning research
Research at UofG led by Cooper and Reboud focused on DNA-based point-of-care sensors for infectious agents, as an alternative to conventional immunodiagnostic lateral flow tests. The main advantages of using DNA-based testing are that it differentiates between current and historical infections, whilst simultaneously enabling the highly sensitive identification of the species of pathogens (as is required for informing treatment and care pathways).
Low-cost, integrated, DNA sensors that can test for multiple DNA sequences (as markers of different species of pathogens), were developed at UofG, using hot-wax printing of hydrophobic barriers on paper to define sample and reagent flows [3.1]. The assay can be performed by a non-expert and uniquely involves simple paper-folding (origami) to bring sample and reagents into contact and perform isothermal DNA amplification and detection.
The origami device has been used in a variety of settings to detect the different strains of malaria parasite, schistosomes (a parasitic worm), bacteria (causing sepsis) in humans and sexually transmitted infections in animals. All of these represent a challenge for traditional detection methods which cannot be implemented in the field and are more costly.
Existing techniques have been unable to provide the integration of the assay steps into a single, easy-to-use platform. The devices designed at UofG uniquely use origami-folding to generate purified DNA from raw samples (e.g. blood), and further perform amplification and detection of multiple DNA types at once. The results can be simply recorded and analysed using a cloud-based platform.
Using over GBP1.5 million of funding from the EPSRC under the ‘ Novel low-cost diagnostic tools and their impact in Africa’ grant [3.2], and in partnership with Ugandan Ministry of Health, UofG researchers worked with healthcare technicians to validate the strip-based sensor, analogous to a pregnancy test, to generate easy-to-visualise readouts. The goal of this work was to deliver health and economic sustainability in the Global South by enabling low-cost, effective and accurate diagnosis of infectious diseases, namely malaria and schistosomiasis. The unique format of the device used in this work enabled the diagnosis of different diseases with just one test device (e.g. different species of schistosomiasis and malaria, both from finger-prick blood).
Published results show that the specificity of the origami platform exceeds that of the current immunodiagnostics and commercial loop-mediated isothermal amplification (LAMP) methods [3.1, 3.3]. A unique, key advantage of the origami platform exists in its ability to have high specificity; it can differentiate between closely related malarial parasites P. falciparum and P. vivax infections [3.1, 3.3]. Making such distinctions is challenging, time-consuming and costly for current laboratory-based diagnostic methods. However, it is easily carried out in the field using the origami technique, guiding malarial treatment (e.g. P. falciparum is more likely to progress to a severe illness, while P. vivax requires a different therapeutics to eliminate dormant forms).
Following initial testing of the malaria origami sensors at the UK’s Malaria Reference Laboratory [3.1], in-field testing of the origami malaria sensors was led by Cooper in Uganda [3.4] with grant funding from EPSRC [3.5]. The origami technique allowed non-expert technicians and healthcare workers from the Ugandan Ministry of Health to diagnose individuals using the simple appearance of coloured lines to indicate a positive result.
The DNA-based origami platform produced results that were 92.8% accurate (compared with the gold-standard PCR DNA detection methods, which cannot be implemented in the field), while it outcompetes established field-based techniques in malaria detection of immunodiagnostics (82% accuracy) and microscopy (86% accuracy) [3.4]. Collectively these findings illustrate key points about the origami platform: it is easy to use, fast and reliable and has a high sensitivity [3.1–3.5].
3. References to the research
Xu, G., Nolder, D., Reboud, J., Oguike, M. C., van Schalkwyk, D. A., Sutherland, C. J., & Cooper, J. M., 2016.Paper-Origami-Based Multiplexed Malaria Diagnostics from Whole Blood. Angewandte Chemie International Edition, 55(49): pp. 15250–15253. doi:10.1002/anie.201606060 *
Grant Funding: Professor J. Cooper. Novel low-cost diagnostic tools and their impact in Africa. EPSRC. 01/02/2018–31/01/2021. GBP1,585,505.
Xu, G., Nolder, D., Reboud, J., Oguike, M.C., Sutherland, C.J. and Cooper, J., 2018. Origami-based Multiplexed Infectious Disease Diagnostics from Whole Blood - Research Data., University of Glasgow. doi:10.5525/gla.researchdata.339
Reboud, J., Xu, G., Garrett, A., Adriko, M., Yang, Z., Tukahebwa, E.M., Rowell, C. and Cooper, J.M., 2019. Paper-based microfluidics for DNA diagnostics of malaria in low resource underserved rural communities. Proceedings of the National Academy of Sciences, 116(11); pp.4834–4842. doi:10.1073/pnas.1812296116 *
Yang, Z., Xu, G., Reboud, J., Ali, S.A., Kaur, G., McGiven, J., Boby, N., Gupta, P.K., Chaudhuri, P. and Cooper, J.M., 2018. Rapid veterinary diagnosis of bovine reproductive infectious diseases from semen using paper-origami DNA microfluidics. ACS sensors, 3(2); pp.403–409. doi: 10.1021/acssensors.7b00825 [Available on request from HEI]
*=best indicators of quality
4. Details of the impact
Malaria and other infectious diseases remain a global health priority. Low-cost rapid diagnostic tests (RDTs) can help determine the prevalence of infectious diseases in LMICs, informing treatment and care pathways in community settings (without access to diagnostic laboratories). The origami-fold paper-based device underpinned by UofG research addresses an urgent emerging challenge noted with regard to RDTs concerning the accuracy of the tests. The combination of nucleic acid testing with lateral flow detection and origami-style folds represents a game-changing innovation in low-cost RDTs that responds to the need for high detection accuracy, indicating whether an infection is current and enabling simultaneous testing of multiple infectious diseases in field settings.
Impacts on health
The Glasgow research has underpinned the following health impacts to date:
The new, low-cost diagnostic technology is easier to use, more rapid and more accurate than current diagnostics, and has been trialled and adopted in the Tororo, Mayuge and Apac regions of Uganda (which ranks 3rd in the world for malaria cases);
Informed by field trials revealing higher than expected levels of schistosomiasis, the Tororo health authority and the Ugandan Ministry of Health implemented a decision to carry out mass drug adminstrations of schoolchildren.
As a result of the device created at UofG and its impact in Tororo, Uganda, a new Ugandan public health initiative has been created. This initiative is a clear enhancement of disease prevention and has changed understanding and policy among national and regional healthcare and education authorities with regard to disease control [5.1-5.3].
The origami testing platform has directly generated health impacts for school children in Uganda, as it was used in ‘field trials’ – testing trials carried out a local school. These trials identified a previously unidentified, high-level of schistosomiasis infection, resulting in a mass drug administration that benefitted 940 children in the first instance.
Image collage showing (left) an individual having a blood sample taken which will be analysed; (middle), the sample-to-answer multiplexed cartridge involving a paper-based microfluidic test, enabling DNA based species-specific detection at the point-of-need and (right) the use of a mobile phone-controlled platform (with the cartridge inserted), enabling computing with a cloud-based decision support tool to record the result.
The platform identified malarial and schistosomiasis infection levels in remote regions of Uganda faster and with higher accuracy than current conventional field-based methods. This was demonstrated clearly in 2018–2019 field trials (led by Cooper in collaboration with the Tororo District and Ministry of Health) carried out in primary schools in Uganda’s Tororo District. The device consistently and correctly detected higher levels of infections in the schoolchildren which had been under-estimated or undetected by the health authorities. The District’s Chief Administrative Officer stated [5.1] that the prevalence of schistosomiasis in particular surprised the authorities there, and ‘based on this evidence Tororo District has…put in place a programme of mass drug administration to address the widespread problem.’ As a direct result of UofG’s findings in Uganda, an initial 940 children (from one school alone) were included in the first tranche of schistosomiasis treatment in 2019, carried out by the Ministry of Health. UofG were invited to expand the Tororo District school testing programme that they commenced in July 2019, and returned in 2020, with the District confirming that the work had ‘spearhead[ed] the promotion of new point-of-care DNA based diagnostics for infectious diseases in other districts in Uganda’ [5.1]. This is confirmed in a subsequent letter stating that the UofG ‘testing…has helped accelerate the Ministry of Health Mass Drug Administration (MDA) in the region’ [5.2].
Impacts on commerce and the economy
Uniquely combining DNA analysis multiplexed testing that is faster and more accurate than the conventional RDTs offers opportunities to industrial partners. To date, this has achieved the following impacts:
Within Epigem Ltd, where new commercial opportunities have arisen for this UK SME, (the main source of their growing revenue comes from collaboration with Prof Cooper) and collaboration with UofG has allowed the company to meet its objectives [5.4]
Contributing to innovation and entrepreneurial activity in the Ugandan Industrial Research Institute (UIRI) on the design and delivery of new products or services [5.5];
Within Mologic Ltd, where the technology is being adapted for the detection of SARS-CoV-2 in an industrial collaboration with the MRC (MR/V035401/1, 2021) [5.6].
Using a prototype tested in a trial with UK’s Malaria Reference Laboratory, manufacturer Epigem undertook to ‘design and manufacture cartridges to house all the components, to increase usability and, consequently, application in remote situations’ [5.4]. Epigem’s engineers ‘created a manufacturable design in plastic, to accommodate the paper lateral flow device, giving it the robust structural integrity needed for testing in rural environments.’ Epigem also ‘provided devices for use in field trials in Uganda. Epigem consider the devices to be mass manufacturable at low cost.’
In 2020, Epigem supported Uganda Industrial Research Institute (UIRI) − a center of excellence for Industrial Research in the East African Community − to develop local modes of mass manufacturing and are working through the African Network for Drugs and Diagnostics Innovation to develop a manufacturing facility to produce the diagnostic devices in Africa [5.5]. “ We have been working with Professor Cooper’s team for more than 3 years which led to a close partnership resourced by Global Challenge Research Funding and UKRI grants (EP/T029765/1) to explore the manufacturing of mobile health technologies for clinical diagnostics of infectious diseases, based upon DNA analysis. In 2019 we signed a joint Memorandum of Agreement to focus our future activities on co-development of mobile health within an open-innovation framework. This relationship has also enabled us to interact with UK SMEs including Epigem Ltd and Mologic Ltd, exploring routes for local manufacture of diagnostic devices and opening up new opportunities for these companies in Uganda.” – Executive Director of UIRI [5.5]
UIRI is now “translating methods to make the diagnostic cartridges, originally manufactured by computer numerical control (CNC) machining at Epigem Ltd, to be produced in Kampala – providing a low cost, low volume technique for the initial trials. [UIRI] are keen to continue to work with Epigem to translate the design into mass manufacturable, lower-cost versions, that can be used by teams working in Mulago Hospital Infectious Disease Institute and the Ministry of Health, Uganda in their disease screening activities as well as by the Veterinary Diagnostic Unit at Makerere University in supporting animal health through testing livestock.” – Executive Director of UIRI [5.5]
UofG researchers most recently are collaborating with Mologic on translating the device for use, exploiting the origami technique to measure infections as a “respiratory panel” of SARS-CoV-2, RSV and influenza; funding was secured in late 2020 [5.6]. Mologic is a leading developer of lateral flow and rapid diagnostic technologies and will work closely in partnership with The Gates Foundation and UK Aid to develop, validate and manufacture the new product/platform through a social enterprise spin-out called Global Access Diagnostics (without shareholders and delinked from commercial return to provide rapid responses to global pandemics) [5.6]. The technologies are now being produced in the UK and in Senegal [5.6], and the collaboration’s progression unpderins a philosophy that is closely aligned with the Glasgow team's ambition.
5. Sources to corroborate the impact
Letter 04 July 2019: Chief Administrative Officer, Tororo District, Local Government, Uganda, confirming that testing had revealed unforeseen levels of infection and underpinned their decision to administer schistosomiasis treatment to 940 schoolchildren in one school.
Letter 26 February 2020: Chief Administrative Officer, Tororo District, Local Government, Uganda, confirming that UofG testing had helped accelerate Ugandan Ministry of Health’s mass drug administration in the region.
Letter 27 February 2020: Chief Administrative Officer, Tororo District, Local Government, Uganda, inviting UofG to expand the ongoing schistosomiasis (bilharzia) testing programme.
Letter 08 February 2021: Company Director, Epigem, confirming participation in field trials and expansion of work to partner with Ugandan Industrial Research Institute on local modes of manufacturing.
Letter 10 February 2021: Uganda Industrial Research Institute (UIRI) letter
Letter 03 February 2021: Chief Scientific Officer, Mologic Inc letter
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
UofG photonics research developed antimonide-based gas sensors in collaboration with Gas Sensing Solutions Ltd., generating economic and healthcare impacts. The resulting new products have been strategically important to Gas Sensing Solutions, enabling the company to place their wearable and portable gas sensing products in food packaging, aerospace, personal safety systems markets. This has resulted in sales of >250,000 gas sensors in >46 countries, to customers including NASA. Gas Sensing Solutions sensors are central to healthcare products including N-Tidal, a new lung function-monitoring device generating [text removed for publication] revenue for Scottish product design SME Wideblue Ltd., through the production of >1,000 devices for NHS hospitals amidst the COVID-19 pandemic. The Gas Sensing Solutions/UofG partnership underpins the GBP6 million MIRAGE industrial collaboration project, which has established Scotland at the forefront of the global sensors and imaging market.
2. Underpinning research
Non-dispersive infrared (NDIR) sensors are commonly used to measure carbon dioxide (CO2) gas. NDIR gas sensors comprise an infrared (IR) light source, a sample of CO2 gas and a detector. As the IR light passes through the gas sample, the CO2 gas molecules absorb a specific band of IR light, while allowing other wavelengths of light to pass through. At the detector end, an IR detector reads the remaining amount of light that was not absorbed by the CO2 molecules.
Light-emitting diodes (LEDs), made with semiconductors, are commonly used as the light source in NDIR sensors. Antimonide based LEDs have emerged as a disruptive source technology for gas sensing as they are low power, low cost, fast, compact and robust.
Molecular-beam epitaxy (MBE) is a method for thin-film deposition of single crystals used widely in the manufacture of semiconductor devices. Researchers at UofG have over 30 years of experience in MBE growth and characterisation, with UofG researchers driving research programmes specifically developing LEDs. The UofG MBE capability led Gas Sensing Solutions to initiate a collaboration with UofG in 2010 and to fund research projects focused on the development of antimonide semiconductor LEDs.
The first period of Gas Sensing Solutions-funded collaboration with UofG (2011–2013) identified novel growth processes and, within months, quality antimonide semiconductors were produced for use in the manufacture of prototype LED sensors that opened new markets for Gas Sensing Solutions. Subsequent research focused on improving the quality and sensitivity of the antimonide semiconductors and the NDIR devices in which they were used [3.1, 3.2]. An accompanying Gas Sensing Solutions-sponsored Industrial CASE studentship (2011–2015) to investigate the behaviour of the prototype devices, advanced UofG understanding of the electrical and optical properties of antimonide LEDs through characterisation of the material and fabrication of prototype devices [3.3, 3.4]. This delivered a 3-fold enhancement in the emitted light, making the NDIR sensors more efficient.
The integration of the new LEDs into prototype gas sensors was undertaken in a KTP (2012–2015) with Dr Matt Steer, UofG, to industrialise UofG-based academic-style processes and transfer the technology to Gas Sensing Solutions. This assured an in-house supply of antimonide materials and thus Gas Sensing Solutions’ supply chain for device manufacture. The project facilitated the production of new, larger area, antimonide semiconductor materials, which reduced production costs. UofG research incorporated the new antimonide semiconductor materials to improve the LED efficiency and reduce power consumption, thus making possible battery life of the order of decades.
The MIRAGE project ( https://censis.org.uk/censis_projects/mirage/, 2015–2019) was a GBP6 million collaborative research and development project, supported by Scottish Enterprise and CENSIS. This project led to the development of novel epitaxial structures which produced multispectral mid-infrared LEDs facilitating the simultaneous sensing of multiple gases using the same source [3.5, 3.6].
3. References to the research
Peralagu, U. , Povey, I. M., Carolan, P., Lin, J., Contreras-Guerrero, R., Droopad, R., Hurley, P. K.and Thayne, I. G. (2014) Electrical and physical characterization of the Al2O3/ p-GaSb interface for 1%, 5%, 10%, and 22% (NH4)2S surface treatments. Applied Physics Letters, 105(16), 162907. ( doi:10.1063/1.4899123)
Meriggi, L., Steer, M. J., Ding, Y., Thayne, I. G., MacGregor, C., Ironside, C. N. and Sorel, M. (2015) Enhanced emission from mid-infrared AlInSb light-emitting diodes with p-type contact grid geometry. Journal of Applied Physics, 117(6), 063101. ( doi:10.1063/1.4905081)
Xie, C., Pusino, V., Khalid, A.-u.-H., Steer, M., Sorel, M., Thayne, I. and Cumming, D. (2015) Monolithic integration of an active InSb-based mid-infrared photo-pixel with a GaAs MESFET. IEEE Transactions on Electron Devices, 62(12), pp. 4069-4075. ( doi:10.1109/TED.2015.2492823)
Ding, Y., Meriggi, L., Steer, M., Fan, W., Bulashevich, K., Thayne, I., Macgregor, C., Ironside, C. and Sorel, M. (2016) Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs. Procedia Engineering, 140, pp. 36-42. ( doi:10.1016/j.proeng.2015.10.153)
Pusino, V., Xie, C., Khalid, A., Steer, M. J., Sorel, M., Thayne, I. G. and Cumming, D. R.S. (2016) InSb photodiodes for monolithic active focal plane arrays on GaAs substrates. IEEE Transactions on Electron Devices, 63(8), pp. 3135-3142. ( doi:10.1109/TED.2016.2578982)
Aziz, M., Xie, C., Pusino, V., Khalid, A., Steer, M., Thayne, I. G. and Cumming, D. R.S. (2017) Multispectral mid-infrared light emitting diodes on a GaAs substrate. Applied Physics Letters, 111(10), 102102. ( doi:10.1063/1.4986396)
4. Details of the impact
Gas Sensing Solutions was founded in 2005, focussing on the development of antimonide-based solid state LED detectors for carbon dioxide (CO2) sensing. Antimonide wafers were originally obtained using molecular beam epitaxy (MBE) under licence from a UK government funded Qinetiq facility. Following the withdrawal of government funding for Qinetiq, UofG first acquired the MBE facility before selling it to Gas Sensing Solutions (2010). A relationship developed from this and UofG continued to support Gas Sensing Solutions by carrying out specialist research through funded projects, leading to the development and production of NDIR sensor products that underpin Gas Sensing Solutions’ commercial success.
The UofG research has led to:
commercial and economic impacts for Gas Sensing Solutions and its customers.
health and safety impacts from their use in a precision lung function-monitoring device and in astronaut safety experiments carried out by NASA.
Commercial and economic impacts
The global gas sensing market was valued at USD2.19 billion in 2019 by Grand View Research and is anticipated to grow at 8.3% per annum between 2020 and 2027 [5.1]. The UofG/ Gas Sensing Solutions partnership has produced the next generation of mid-IR sensors that enabled Gas Sensing Solutions to enter new sensing markets, including healthcare, aerospace and the personal safety market for wearable and portable gas sensors [5.2, 5.3]. As a direct result of the collaboration with UofG, since 2010 Gas Sensing Solutions have sold >250,000 non-dispersive infrared (NDIR) sensors worldwide, exporting to >46 countries [5.2].
Gas Sensing Solutions won the prestigious Innovation Award from the Institute of Physics for development and commercialisation of their range of LED-based CO2 sensors (2014) [5.4]. Acknowledging the technology developed at UofG and its innovative and commercial significance to Gas Sensing Solutions, a KTP was established to strengthen the relationship between UofG and Gas Sensing Solutions in 2012, which was shortlisted for the ‘Best of the Best’ KTP Award (2015) [5.5].
UofG / Gas Sensing Solutions’ solid-state CO2 sensors are used extensively by the horticulture and food packaging industries. Typical applications include grain storage, plant growth, incubators, and mushroom and dairy farms. Modified Atmosphere Packaging (MAP) for food uses CO2 to prolong the shelf-life of food produce [5.2]. Food quality control requires accurate and rapid monitoring of CO2 levels on the packing line. Conventional CO2 sensors take several minutes to stabilise and produce readings whereas the Gas Sensing Solutions portable CO2 analyser, based on UofG research, takes seconds. an essential characteristic for high-speed packing lines. Gas Sensing Solutions supplies these analysers to companies worldwide, including Storage Control Systems (UK and USA), TecSense (Germany) and Iijima (Japan) [5.2]. Gas Sensing Solutions’ customers now have faster quality control checks. Although unable to disclose financial savings, Gas Sensing Solutions are aware that these faster checks have generated economic impacts for their customers [5.2].
The Gas Sensing Solutions / UofG partnership formed the foundation of the GBP6 million MIRAGE industrial collaboration project, backed by Scottish Enterprise and CENSIS, which enabled Gas Sensing Solutions to meet commercial strategy objectives centred around collaboration [5.2, 5.3]. MIRAGE was launched in 2016 and brought together four Scottish companies to establish Scotland at the forefront of the global sensors and imaging market. Between 2016 and 2026, the project is expected to bring GBP56 million to the Scottish economy. As co-founders of the MIRAGE project, Gas Sensing Solutions accessed UofG technical expertise which enabled them to begin the development of a new sensor for methane [5.2]. Gas Sensing Solutions is now developing a uniquely low-power, portable methane sensor for safety assurance in the home [5.2].
Health and safety impacts
Gas Sensing Solutions’ gas sensors are critical to a new device developed in a consortium with Wideblue Ltd. and Cambridge Respiratory Innovations Ltd (CRiL) [5.2, 5.6, 5.8]. The device, called N-Tidal™, is a CE-marked, hand-held device for monitoring and managing lung diseases [5.8]. Gas Sensing Solutions’ antimonide LED is at the heart of the new sensor [5.2, 5.6, 5.7]. N-Tidal was launched in 2017 for clinical trial data collection and its advanced prototypes have been used over 40,000 times in six clinical studies [5.6]. The annual economic burden of asthma and COPD on the NHS in the UK is estimated as GBP3 billion and GBP1.9 billion respectively, and N-Tidal is reducing this burden by providing early warnings to the >6 million people in the UK with lung diseases.
In response to the COVID-19 pandemic, CRiL accelerated the development of N-Tidal and its approval for clinical use for the early detection of lung function deterioration and patient responses to therapeutic interventions [5.9]. Additional economic impacts have been generated for product designers, Wideblue Ltd, [text removed for publication]
NASA recently carried out research at the International Space Station to determine the effects of CO2 on astronauts [5.9, 5.10]. CO2 analysers from Gas Sensing Solutions, developed using UofG technology, were selected because of the tiny amount of power used by their proprietary, mid-range, infrared LEDs and the resulting long operational life of their batteries [5.10]. This research identified that crew members develop CO2-related symptoms at lower CO2 levels than would be expected terrestrially. NASA reported that this research will facilitate design of “appropriate wearable technology for future space missions” [5.9] .
5. Sources to corroborate the impact
[PDFs available, unless otherwise indicated]
Gas Sensing Market Size, Share and Trends Analysis Report by Grand View Research.
Testimonial: CEO of Gas Sensing Solutions.
Testimonial: former CEO of Gas Sensing Solutions.
IOP Innovation Award Article.
Gas Sensing Solutions press release: KTP 2015 Award Nomination.
CRiL overview February 2019 video. https://www.youtube.com/watch?v=vHZoUdVZm3w
Commercial information from Wideblue Ltd.
Medical Technology Article: ‘Catch your breath: A Device that Spots Critical COVID-19 Cases’.
Gas Sensing Solutions press release: NASA Research Update.
Press Release: ‘GSS CO2 Sensors Used on International Space Station’.
- Submitting institution
- University of Glasgow
- Unit of assessment
- 12 - Engineering
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
Collagen, a protein, is the main component of many sausage casings; however, the variability in collagen quality can cause casings to burst, which is costly and wasteful. UofG research enabled multinational casings manufacturer Devro to identify the optimal properties of quality sausage casings and to adapt their processing methods to achieve higher-quality casings. The UofG research was also instrumental in Devro’s decision to establish the company’s first Research and Development Department. The research-based improvements in processing of collagen casings resulting from UofG research have facilitated entry to new markets, increased product yield while reducing wastage, and increased annual sales [text removed for publication].
2. Underpinning research
UofG research addressed collagen characterisation issues by developing ways of testing the physical, mechanical and chemical properties of collagen using atomic force microscopy (AFM) and Raman-microspectroscopic techniques. These methods were shared in a knowledge transfer partnership (KTP) and were used to create material databases outlining how the mechanical properties of collagen change during the industrial process of sausage case making. The databases were then exploited to develop improved procedures for Devro to achieve more uniform collagen consistency in the manufacturing process.
Prof Yin’s research at UofG develops methods to study the physical, mechanical and chemical properties of cells and proteins including collagen [3.1–3.3]. This novel research made a significant contribution to the field of bioengineering, characterising for the first time the consistency and mechanical properties of collagen without the addition of chemical labels or damage to the collagen.
An understanding of the mechanical and physical properties of collagen was developed with the use of atomic force microscopy (AFM) to quantify those properties of cells and proteins including collagen [3.1]. AFM determines elastic and other physical properties through characterisation of the surface indentation of materials. In this research, Prof Yin systematically evaluated the operational factors of AFM, including the indentation depth and speed, to determine the best approach to systematically determine the elasticity of cells and matrices rich in collagen. This evaluation involved characterising a range of cells with varying collagen compositions and demonstrated that it is possible to accurately determine the physical properties of materials with varying collagen composition using the AFM technique.
UofG research on Raman-microspectroscopy led to the development of further techniques that can characterise chemical changes in collagen [3.2, 3.3]. The primary aim of the research using this technique was to understand why collagen found in bones is different to that found in skin. The research led by Prof Yin used microfluidic chip devices to determine how factors such as pH and ion concentration, in fluid surrounding cells undergoing hardening through mineralisation, influences how the cells change [3.2]. The microfluidic chip allowed for a high-throughput approach, and a similarly robust, systematic characterisation of materials to that used in her AFM studies.
The research programme integrated surface enhanced Raman scattering (SERS) techniques with a high-throughput microfluidic approach to chemically characterise cells with a high degree of spatial and temporal resolution [3.3]. The rapidly changing chemical dynamics of the cells were measured using a unique combination of Raman and microfluidic approaches designed by UofG. The high-resolution, high-throughput nature of the work demonstrated the potential of this combination to generate reliable databases of results that could be used in industry.
In 2010, Devro entered a Knowledge Transfer Partnership with UofG to apply Prof Yin’s AFM and Raman-microspectroscopic techniques to develop a material database for Devro, characterising the different consistencies of collagen. These analysis techniques have been used by Devro to determine which specific manufacturing processes alter the chemical composition of collagen, making it harder or softer and thus of varying suitability for their sausage casings.
3. References to the research
McPhee, G., M. J. Dalby, M. Riehle and H. B. Yin (2010). "Can common adhesion molecules and microtopography affect cellular elasticity? A combined atomic force microscopy and optical study." Medical & Biological Engineering & Computing 48(10): 1043-1053. DOI: 10.1007/s11517-010-0657-3 *
Yin, H. B., B. Z. Ji, P. S. Dobson, K. Mosbahi, A. Glidle, N. Gadegaard, A. Freer, J. M. Cooper and M. Cusack (2009). "Screening of Biomineralization Using Microfluidics." Analytical Chemistry 81(1): 473-478. DOI: 10.1021/ac801980b *
Zhang, X. L., H. B. Yin, J. M. Cooper and S. J. Haswell (2008). "Characterization of cellular chemical dynamics using combined microfluidic and Raman techniques." Analytical and Bioanalytical Chemistry 390(3): 833-840. DOI: 10.1007/s00216-007-1564-9
*=best indicators of quality
4. Details of the impact
[5.1] Devro is a leading international supplier of sausage casings, [text removed for publication].
Fundamental research from UofG has had a transformational effect on Devro, including impact on company practice and culture, environmental impacts and economic impacts.
Reduced wastage and environmental impacts at Devro
As a result of the KTP with UofG, Devro deployed a material database in 2013 to define the most suitable collagen for each product, thus avoiding the processing of inferior collagen, with associated reductions in cost [5.2, page 9]. In-house research led by Dr Cheng (the former KTP associate) has enabled new data on different collagen sources to be acquired and monitored [5.3, page 7, section 8]. This allows Devro to tailor their products to their customers’ needs. [text removed for publication] [5.1].]
Impacts on practice and culture
Prior to the sharing of techniques developed at UofG, Devro did not have a Research and Development (R&D) department. Acknowledging the value of the KTP research, Devro opened its first R&D department, appointing Cheng as Research Technologist. With this Department, the techniques and research developed at UofG are continually in use and have been important in the company’s progression in new markets in China [5.4].
“As a direct result of the KTP, Devro created a Research and Development department for the first time in 2012. I was the first employee of this new department after the completion of the KTP, in the newly established role of Research Technologist. Using the AFM and Raman techniques developed at the University of Glasgow, along with other techniques, a new understanding of how the chemical, physical and mechanical collagen properties varied during different stages of the manufacturing process was achieved. This helped Devro to improve and develop our global manufacturing processes (this work is ongoing in our global research).” – Shuying Cheng, now Group Research Scientist, Devro [5.4] *.
The KTP was Devro’s first R&D-based academic partnership. Subsequently, Devro have changed their practice and are more confident in initiating and pursuing academic partnerships that will continue to support the Research Department, bringing further changes in practice and economic impacts to Devro [5.3 page 4, bullet 1, 5.4].
“Further to impacting the company structure, manufacturing processes and manufacturing sites, this KTP with the University of Glasgow has also enhanced a collaborative culture at Devro and inspired more academic partnerships. We have successfully sought further partnerships with the University of Glasgow, collaborating with mathematics, chemistry and engineering colleagues on projects that will continue to support the R&D department and bring considerable benefits to Devro in the future” [5.4].
Devro have also reported a transformation in their collaborative working practices since the KTP — “Participation in the KTP has transformed the way Devro collaborates around the group and acted as a catalyst to effective partnerships with industrial and academic partners; [text removed for publication] [5.1].
Economic impacts in Devro
Although it is difficult to quantify the portion of Devro’s profits since the KTP based on UofG research, the company have explained that developments underpinned by the research are linked to an increased product yield [text removed for publication] [5.1].
5. Sources to corroborate the impact
Testimonial: Group Head of Research, Devro Plc.
“The Case for Collagen”. Case study compiled by Devro on impacts of their increased understanding as a result of the KTP on their business.
UofG/Devro plc Knowledge Transfer Partnership final report.
Testimonial: former KTP associate and current Group Research Scientist, Devro Plc.