State-of-the-Art in Photoacoustic and Photothermal Spectroscopy Gas Sensing

Dear Colleagues,

Photoacoustic spectroscopy is a spectroscopic sensing technique that utilizes the photoacoustic effect to convert the absorption spectrum of a sample into acoustic waves for detection. It is an important branch of spectroscopy used for the analysis and detection of sample composition and concentration. In addition to its high selectivity and sensitivity, comparable to absorption spectroscopy, photoacoustic spectroscopy has several advantages, including signal dependence solely on sample light absorption, immunity to scattered light interference, zero background, signal proportional to light power, and insensitivity of the signal detector to light wavelength. It has found increasing applications in various fields such as environmental monitoring, industrial process control and detection, medical diagnostics, and hazardous defense material detection, showing a rapidly growing trend.

In this Special Issue topic, papers regarding novel research, technology, and, in particular, the advanced methods and novel applications of various sensors are welcomed. Also, advanced sensor algorithms are welcomed. Research and review articles that describe the current state of the art are welcomed. Potential topics include, but are not limited to, the following: cantilever-enhanced photoacoustic spectroscopy, quartz-enhanced photoacoustic spectroscopy, and multiple-sound-source-excitation photoacoustic spectroscopy.

Prof. Dr. Hongpeng Wu
Dr. Angelo Sampaolo
Dr. Xukun Yin
Dr. Ruyue Cui
Guest Editors

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• trace gas sensing
• quartz-enhanced photoacoustic spectroscopy
• multiple-sound-source-excitation photoacoustic spectroscopy
• photoacoustic and photothermal hybrid spectroscopy