Novel method of gas sensing: the Mode-phase-difference Photothermal Spectroscopy
Professor W Jin and his research team in the Department of Electrical Engineering have worked on "gas sensing research" which has been honoured as "2020 China's Top Ten Optical Breakthroughs" by China Laser Press. In the applied research category, Professor Jin Wei, Chair Professor of Photonic Instrumentation, and his team developed a novel gas sensing method called Mode-phase-difference Photothermal Spectroscopy. The method was hailed as "a landmark technique in fibre-optic gas sensing" by a reviewer in Nature Communications, where the research results were published. The innovation significantly outperforms state-of-the-art electrochemical and semiconductor gas sensors, enabling multi-component gas detection with a single sensing element. It paves the way for ultra-precision gas sensing applications such as harmful gas detection in a space station and high voltage transformer condition monitoring.
https://www.polyu.edu.hk/ee/achievements/awards-and-achievements/2021/top-ten-optical-breakthroughs
