Professor Vincenzo Spagnolo will present a webinar titled Recent Advances in Quartz-Enhanced Photoacoustic Spectroscopy for Gas Sensing Applications, for OSA – Optical Society of America. The webinar will take place on February 18th 2019 from 10:00am to 11:00am, Eastern Standard Time (16.00pm to 17.00 pm Italian time).
To partecipate to this event is required the registration at the following link: https://cc.callinfo.com/r/1qs7kbrt34tny&eom
Once registered one can follow the seminar online or download the full presentation later.
About this event
Optical gas sensors are excellent candidate as powerful tool for trace gas detection and monitoring in a large number of applications, such as environmental monitoring, industrial process control and petrochemical industry. Among most sensitive optical techniques, quartz-enhanced photoacoustic spectroscopy (QEPAS) is capable of extremely high detection sensitivities with a compact detection module. It exploits a quartz tuning fork (QTF) as a sharply resonant acoustic transducer to detect weak photoacoustic excitation and allowing the use of extremely small volumes. QEPAS technique does not require an optical detector, it is wavelength independent, it is immune to environmental noise. These factors, together with and its proven reliability and ruggedness, represent the main distinct advantages with respect to other laser-based techniques for environmental monitoring and in situ detection.
Starting from the basic physical principles governing the QEPAS technique, this presentation will review the main results achieved by exploiting custom QTFs for QEPAS sensing, like the extension of operation in the THz range and intracavity-QEPAS. Novel approaches, such as the use of single tube microresonator systems or QTFs overtone modes operation will be also discussed. Finally, examples of QEPAS real-word applications will be reviewed.
About the presenter
Dr. Vincenzo Spagnolo, Technical University of Bari
Vincenzo Spagnolo obtained a PhD in physics in 1994 from University of Bari. From 1997 to 1999, he worked as researcher of the National Institute of the Physics of Matter (INFM). He works at Technical University of Bari as Full Professor of Applied Physics. He is “Hundred Talent” visiting professor as Shanxi University in Taiyuan (China). He is director of the joint-research lab PolySense created by Technical University of Bari and THORLABS GmbH. His research interests include optoacoustic gas sensing and spectroscopic techniques for real-time device monitoring. His research activity is documented by more than 180 Scopus publications and two filed patents. He has given more than 50 invited/keynote presentations at international conferences and workshops. Prof. Spagnolo is program committee member of several SPIE and OSA conferences. He is editor of Sensors (MPDI), Applied Science (MPDI) and Journal of Sensors (Hindawi). Prof. Spagnolo is senior member of OSA and senior member of SPIE.
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