| Biography | |
|---|---|
 Prof. Jingsong Li Anhui University, China |
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| Title: Development and applicaiton of miniature piezoelectric sensor | |
| Abstract: Quartz crystal tuning fork (QCTF) as a versatile sensor has been proven to be an attractive tool for spectroscopic applications in atmospheric environment monitoring, industrial process control, combustion diagnosis, clinical breath analysis, etc. In this paper, high sensitive QCTF based multi-gas sensing technique has been developed by combing with multi-frequency synchronous modulation strategy. To demonstrate the novel detection technique, three near-infrared continuous-wave (CW) distributed feedback (DFB) diode lasers and a mid-infrared (MIR) external cavity quantum cascade laser (ECQCL) have been employed for simultaneous detection of H2O, CO2, CH4, and N2O. Details of experimental design and results will be reported. Noting that, the proposed sensor architecture has the significant advantages of easier optical alignment, lower cost, and developing ultra-portable, multifunctional gas sensors compared with a conventional TDLAS sensor based on time-multiplexed gas sensing techniques. | |
| Biography: Dr. Jingsong Li received his PhD degree in Optics from Hefei Institute of Physical Science (HIPS), Chinese Academy of Sciences (CAS), China in 2008. He worked as a Postdoctoral fellowship, Research scientist and Visit scholarship at Reims University (France), Max Planck Institute for Chemistry (Germany), Colorado State University (USA) and Swiss Federal Laboratories for Materials Science and Technology (Switzerland), respectively. He is currently a professor at the College of Physics and Material Science, Anhui University, China. His research involves the development and implementation of novel mid-infrared quantum cascade lasers, sensitive spectroscopy techniques and advanced digital signal processing for trace gases and Volatile Organic Components (VOC) sensing for atmospheric chemistry, industrial and environmental applications. He has authored over 60 journal (including Sensors and Actuators B, Optics Express, Applied Spectroscopy and Applied Spectroscopy Reviews, etc.) and conference papers (invited talk at IRMMW2015, EESED2015& SOPO2017). Jingsong Li’s professional activities have included: Member of IEEE, OSA, SPIE and EGU; Approved candidate for a Visiting Fellowship in Canadian Government Laboratories, Natural Sciences and Engineering Research Council of Canada; Editorial board member of Sensors & Transducers Journal; Technical Program Committee Member of IEEE Sensors 2015-2017; Scientific Referee for tens of SCI international journals concerning fields of optics, laser/fibre sensor, digital signal processing and applied spectroscopy, and Referee of Research Proposal for China Scholarship Council (CSC), National Natural Science Foundation of China (NSFC), Swiss National Natural Science Foundation (SNSF). | |
