Professor Walter Johnstone

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, pp. 1-10 (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)

More publications

Teaching

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

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

More projects