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Colin Johnston

Dr Colin Johnston
Senior Research Fellow
Coordinator Institute of Industrial Materials and Manufacturing

Department of Materials
Oxford University Begbroke Science Park
Sandy Lane, Yarnton
Oxford OX5 1PF

Mob: +44 7970 024089
Tel: +44 1865 283705 (Room 317.10.10A)
Tel: +44 1865 273777 (reception)
Fax: +44 1865 848790

Materials Knowledge Transfer Network

Summary of Interests

Materials for harsh environments including aerospace and transport materials. High temperature electronics including packaging and reliability. Failure analysis and design for inherently reliable operation at elevated temperatures.

Knowledge Management and Technology Transfer

Current Research Projects

HITEN
Dr. C. Johnston
HITEN is a global network of organisations interested in high temperature electronics (HTE). HITEN organise a biannual conference in Europe and publish current research, market and technology updates on all aspects of HTE. The main industrial sectors served by HITEN are well logging (geothermal and oil & gas), aerospace and automotive. High temperature electronics are defined as electronics operating in ambients above 125C.

Novel high energy density high reliability capacitors
Dr. A. Mahadevegowda, Dr. C. Johnston, Dr. H.E. Assender, Professor P.S. Grant
Current capacitor technology significantly limits the temperature capability and electrical performance of power electronics relative to the "More Electric Airframe" systems requirements, which are emerging rapidly as a key priority for both aeroengine and airframe manufacturers. Novel capacitor materials combining high dielectric ceramics and high performance polymers are being developed for aero-engine applications, particularly within the more electric aircraft concept. Investigations include characterisation of the fundamental material properties using advanced analytical instruments, clean room characterisation of the electrical properties, development of fabrication routes, and modelling of behaviour for lifetime prediction. (Funded by Technology Strategy Board, Labinal Power, ICW Ltd)

2 public active projects

Research Publications

  1. Printable magnetite and pyrrole treated magnetite based electrodes for supercapacitors,  Zhao, Xin; Johnston, Colin; Crossley, Alison; Grant, Patrick S., Journal of Materials Chemistry (2010), 20(36), 7637-7644
  2. A novel hybrid supercapacitor with a carbon nanotube cathode and an iron oxide/carbon nanotube composite anode, Zhao, Xin; Johnston, Colin; Grant, Patrick S., Journal of Materials Chemistry (2009), 19(46), 8755-8760 
  3. Characterization of nanostructured materials, Werner, Matthias; Crossley, Alison; Johnston, Colin, Edited by Riviere, John C.; Myhra, Sverre, Handbook of Surface and Interface Analysis (2nd Edition) (2009), 319-350.
  4. Spray deposited fluoropolymer/multi-walled carbon nanotube composite films with high dielectric permittivity at low percolation threshold, Zhao, Xin; Koos, Antal A.; Chu, Bryan T. T.; Johnston, Colin; Grobert, Nicole; Grant, Patrick S., Carbon (2009), 47(3), 561-569 
  5. Spray deposition of steam treated and functionalized single-walled and multi-walled carbon nanotube films for supercapacitors, Zhao, Xin; Chu, Bryan T. T.; Ballesteros, Belen; Wang, Weiliang; Johnston, Colin; Sykes, John M.; Grant, Patrick S., Nanotechnology (2009), 20(6), 065605/1-065605/9
  6. Two-dimensional mapping of the mechanical properties of Pb-free solders for reliability optimization, Marques, V.; Johnston, C.; Grant, P. S., Journal of Microelectronics and Electronic Packaging (2009), 6(3), 182-185 
  7. High-temperature electronic materials, Johnston, Colin, Edited by Cantor, Brian; Grant, Patrick; Johnston, Colin, Automotive Engineering (2008), 73-85
  8. Nanoindentation of lead free solders for harsh environments, Marques, Vitor Farinha; Grant, Patrick; Johnston, Colin, Materials Research Society Symposium Proceedings (2008), 1079E(Materials and Processes for Advanced Interconnects for Microelectronics) 
  9. Spray deposition of polymer nanocomposite films for dielectric applications, Zhao, Xin; Hinchliffe, Claire; Johnston, Colin; Dobson, Peter J.; Grant, Patrick S., Materials Science & Engineering, B: Advanced Functional Solid-State Materials (2008), 151(2), 140-145
  10. Synthesis and shape control of mercury selenide (HgSe) quantum dots, Howes, Philip; Green, Mark; Johnston, Colin; Crossley, Alison, Journal of Materials Chemistry (2008), 18(29), 3474-3480 
  11. Dissolution and interfacial reaction of Nb in contact with the molten 52In-48Sn solder, Li, J. F.; Mannan, S. H.; Clode, M. P.; Johnston, C.; Crossley, A., Acta Materialia (2007), 55(15), 5057-5071
  12. Evolution of percolation properties in nanocomposite films during particle clustering, Starke, T. K. H.; Johnston, C.; Grant, P. S., Scripta Materialia (2007), 56(5), 425-428. 
  13. The effect of inhomogeneities in particle distribution on the dielectric properties of composite films, Starke, T. K. H.; Johnston, C.; Hill, S.; Dobson, P.; Grant, P. S., Journal of Physics D: Applied Physics (2006), 39(7), 1305-1311
  14. High temperature electronics - cluster effects, Johnston, Colin; Crossley, Alison, NATO Science Series, II: Mathematics, Physics and Chemistry (2005), 185(Science and Technology of Semiconductor-on-Insulator Structures and Devices Operating in a Harsh Environment), 1-10. 
  15. Physical properties of diamond for thermistors and pressure transducers, Chalker, Paul R.; Johnston, Colin; Werner, Matthias, Semiconductor Science and Technology (2003), 18(3), S113-S116
  16. HITEN 2003. Edited by C. Johnston, A. Crossley, O. Vermesan. Proceedings of the 5th International High Temperature Electronics Conference, July 7-11th Oxford UK Oxford Applied Technology ISBN 0 9543455 17
  17. Nondestructive characterization and application of doped and undoped polycrystalline diamond films, Werner, Matthias; Kohler, Thomas; Mietke, Stephan; Worner, Eckhard; Johnston, Colin; Fecht, Hans-Jorg, Proceedings of SPIE-The International Society for Optical Engineering (2002), 4703(Nondestructive Evaluation and Reliability of Micro- and Nanomaterial Systems), 199-210
  18. Surface treatment for 'galling' protection of titanium alloys - characterization by surface-specific electron and Raman spectroscopies, Crossley, A.; Johnston, C.; Hutchings, I. M.; Myhra, S.; Temple, J. A. G.; Wiklund, U., Thin Solid Films (2002), 414(2), 224-230
  19. Strategies for high temperature electronics – A western European perspective. Johnston, C., Crossley A., Progress in SOI Structures and Devices Operating At Extreme Conditions (eds F. Balestra et al.) Kluwer Academic Publishers (2002) 129 – 137.
  20. HITEN 2001. Edited by C. Johnston, A. Crossley, O. Vermesan. Proceedings of the 4th International High Temperature Electronics Conference, June 5-8th Oslo Norway Oxford Applied Technology ISBN 0 9543455 09 
  21. Boron doping and characterization of diamond, Johnston, C.; Crossley, A.; Werner, M.; Chalker, P. R., EMIS Datareviews Series (2000), 26(Properties, Growth and Applications of Diamond), 337-344
  22. Fabrication of aluminum nitride/diamond and gallium nitride/diamond SAW devices, Chalker, P. R.; Joyce, T. B.; Johnston, C.; Crossley, J. A. A.; Huddlestone, J.; Whitfield, M. D.; Jackman, R. B., Diamond and Related Materials (1999), 8(2-5), 309-313 
  23. High-temperature sensors based on SiC and diamond technology, Werner, M.; Krotz, G.; Moller, H.; Eickhoff, M.; Gluche, P.; Adamschik, M.; Johnston, C.; Chalker, P. R., Sensors Update (1999), 5, 141-190
  24. Raman and reflection anisotropy spectroscopic studies of GaN and AlN growth on GaAs(100), Chalker, Paul R.; Joyce, Tim B.; Farrell, Trevor; Johnston, Colin; Crossley, Alison; Eccles, Julie, Thin Solid Films (1999), 343-344, 575-578