Professor Walter Johnstone

Emeritus Professor

Electronic and Electrical Engineering

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Personal statement

Prof. Walter Johnstone is the Research Professor of Photonic Systems in the Department of Electronic and Electrical Engineering with responsibility only for research leadership and implementation. Prior to his current status, he held senior management positions as Deputy Head then Head of Electronic and Electrical Engineering (2006-11) followed by appointment to the post of Vice Dean (Research) of the Faculty of Engineering (2011-16). He is also a founding director of the Spin-out Company, OptoSci Ltd.

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Area of Expertise

Laser spectroscopy, in particular tunable diode laser spectroscopy, and its applications to accurate measurements of gas concentration, temperature and pressure in harsh, particularly high temperature, envoronments such as fuels cells and gas turbine (aero) engines at temperatures up to 1000oC.

Prize And Awards

Applied Optics Best Paper Prize 2022 - Imaging Systems
Recipient
2023

More prizes and awards

Qualifications

PhD, BSc (Hons), FIET, CEng, F.Inst.P, CPhys

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Publications

Miniature modular sensor for chemical species tomography with enhanced spatial resolution
Zhang Rui, Xia Jiangnan, McCann Hugh, Liu Chang, Ahmed Ihab, Pourkashanian Mohamed, Gough Andrew, Armstrong Ian, Lengden Michael, Johnstone Walter
2023 IEEE International Conference on Imaging Systems and Techniques (IST) 2023 IEEE International Conference on Imaging Systems and Techniques IEEE International Workshop on Imaging Systems and Techniques (IST) (2023)
https://doi.org/10.1109/IST59124.2023.10355729
A fast sensor for non-intrusive measurement of concentration and temperature in turbine exhaust
Zhang Rui, Xia Jiangnan, Ahmed Ihab, Gough Andrew, Armstrong Ian, Upadhyay Abhishek, Fu Yalei, Enemali Godwin, Lengden Michael, Johnstone Walter, Wright Paul, Ozanyan Krikor, Pourkashanian Mohamed, McCann Hugh, Liu Chang
Sensors and Actuators B: Chemical Vol 396 (2023)
https://doi.org/10.1016/j.snb.2023.134500
Hybrid model-driven spectroscopic network for rapid retrieval of turbine exhaust temperature
Fu Yalei, Zhang Rui, Xia Jiangnan, Gough Andrew, Clark Stuart, Upadhyay Abhishek, Enemali Godwin, Armstrong Ian, Ahmed Ihab, Pourkashanian Mohamed, Wright Paul, Ozanyan Krikor, Lengden Michael, Johnstone Walter, Polydorides Nick, McCann Hugh, Liu Chang
IEEE Transactions on Instrumentation and Measurement Vol 72 (2023)
https://doi.org/10.1109/TIM.2023.3328086
Rapid and in situ gas turbine plume diagnosis using laser absorption spectroscopy
Zhang Rui, Xia Jiangnan, Gough Andrew, Ahmed Ihab, Fu Yaeli, Armstrong Ian, Upadhyay Abhishek, Enemali Godwin, Lengden Michael, Johnstone Walter, Pourkashanian Mohamed, Wright Paul, Ozanyan Krikor, McCann Hugh, Liu Chang
Gordon Conference - Advancing Optical Diagnostics for Future Energy Systems (2023)
Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines
Upadhyay Abhishek, Lengden Michael, Enemali Godwin, Stewart George, Johnstone Walter, Wilson David, Humphries Gordon, Benoy Thomas, Black John, Chighine Andrea, Fisher Edward, Zhang Rui, Liu Chang, Polydorides Nick, Tsekenis Alex, Wright Paul, Kliment Joshua, Nilsson Johan, Feng Yutong, Archilla Victor, Rodriguez-Carmona Javier, Sanchez-Valdepenas Jesus, Beltran Marta, Polo Valentin, Armstrong Ian, Mauchline Iain, Walsh Douglas, Johnson Mark, Bauldreay Joanna, McCann Hugh
Applied Optics Vol 61, pp. 8540-8552 (2022)
https://doi.org/10.1364/AO.467828
Investigation and validation of 2000 nm region for the simultaneous measurement of water vapour and CO2 concentration and temperature
Armstrong Ian, Clark Stuart, Upadhyay Abhishek, Gough Andrew, Lengden Michael, Johnstone Walter, Zhang Rui, Enemali Godwin, McCann Hugh, Liu Chang, Ahmed Ihab, Pourkashanian Mohamed, Wright Paul
FLAIR 2022 - Field Laser Applications in Industry and Research, pp. 32 (2022)

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Teaching

Fundamental principles of Optics and Photonics, optical telecommunication systems, photonics systems and its applications in general.

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Research Interests

Professor Johnstone is Head of the Photonic Systems research team and his work has led to more than 200 technical publications and several patent applications. Recent research in laser spectroscopy applications focusses on accurate measurement of gas concentration, pressure and temperature in extreme environments, such as in the combustion zones and exhaust plumes of aero (gas turbine) engines at high temperature and high gas velocity. As well as carrying out basic research, his group is involved in the engineering of such systems for in situ industrial deployment, and sensing systems based on his research are now commercially available.

Professional Activities

Institute for System Level Integration (External organisation)
Member
5/2010
Journal of Measurement Science and Instrumentation (Journal)
Editorial board member
1/2010
Glasgow Research Partnership Joint Research Initiative on Electronics, Communications and Power Systems (External organisation)
Member
5/2009
Photonics 2008
Invited speaker
12/2008
Optosci Ltd (External organisation)
Member
1/10/1994

More professional activities

Projects

Industrial CASE Account - University of Strathclyde 2021 | Clark, Stuart
Lengden, Michael (Principal Investigator) Johnstone, Walter (Co-investigator) Clark, Stuart (Research Co-investigator)
01-Jan-2021 - 01-Jan-2026
Laser Imaging of Turbine Engine Combusion Species (LITECS) (Programme Grant)
Lengden, Michael (Principal Investigator) Burns, Iain (Co-investigator) Johnstone, Walter (Co-investigator)
01-Jan-2020 - 31-Jan-2025
Doctoral Training Partnership 2018-19 University of Strathclyde | Gough, Andrew
Lengden, Michael (Principal Investigator) Johnstone, Walter (Co-investigator) Gough, Andrew (Research Co-investigator)
01-Jan-2018 - 01-Jan-2022
CIDAR for CleanSky 2 (Combustion species Imaging Diagnostics for Aero-engine Research)
Lengden, Michael (Principal Investigator) Burns, Iain (Co-investigator) Johnstone, Walter (Co-investigator)
01-Jan-2018 - 31-Jan-2021
EngD Gooch and Housego Optical Coherence Tomography
Flockhart, Gordon (Principal Investigator) Johnstone, Walter (Co-investigator)
01-Jan-2017 - 30-Jan-2021
In-situ Chemical Measurement and Imaging Diagnostics for Energy Process Engineering (Platform Grant)
Johnstone, Walter (Principal Investigator) Burns, Iain (Co-investigator) Lengden, Michael (Co-investigator) Stewart, George (Co-investigator)
01-Jan-2016 - 30-Jan-2021

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Contact

Professor Walter Johnstone
Emeritus Professor
Electronic and Electrical Engineering

Email: w.johnstone@strath.ac.uk
Tel: 548 2641