Results 41 to 50 of about 3,619,372 (170)

Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy [PDF]

Sensors, 2017
Arkadiusz Hudzikowski, Frank K. Tittel, Aleksander Głuszek   +2 more
exaly   +2 more sources

Application of standard and custom quartz tuning forks for quartz-enhanced photoacoustic spectroscopy gas sensing

, 2022
A review on the design of quartz tuning forks and their applications in quartz-enhanced photoacoustic spectroscopy (QEPAS)-based trace gas sensors is reported. Standard commercial quartz tuning forks are used as sound wave transducers in the conventional
Yu, Jianhui, Zheng, Huadan, Zhong, Yongchun, Jianhui Yu, Sampaolo, Angelo, Lin, Leqing, Liu, Yihua, Vincenzo Spagnolo, Patimisco, Pietro, Marilena Giglio, Wenguo Zhu, Zhou, Xu, Haoyang Lin, Huadan Zheng, Yihua Liu, Yongchun Zhong, Frank K. Tittel, Leqing Lin, Zhu, Wenguo, Pietro Patimisco, Xu Zhou, Lin, Haoyang, Tittel, Frank K., Giglio, Marilena, Spagnolo, Vincenzo, Angelo Sampaolo   +25 more
core   +1 more source

Integrated near-infrared QEPAS sensor based on a 28 kHz quartz tuning fork for online monitoring of CO2 in the greenhouse

Photoacoustics, 2022
In this paper, a highly sensitive and integrated near-infrared CO2 sensor was developed based on quartz-enhanced photoacoustic spectroscopy (QEPAS).
Yihua Liu, Haoyang Lin, Baiyang Antonio Zhou Montano, Wenguo Zhu, Yongchun Zhong, Ruifeng Kan, Bin Yuan, Jianhui Yu, Min Shao, Huadan Zheng   +9 more
doaj   +1 more source

Multiple-sound-source-excitation quartz-enhanced photoacoustic spectroscopy based on a single-line spot pattern multi-pass cell

, 2021
International audienceMultiple-sound-source-excitation quartz-enhanced photoacoustic spectroscopy (MSSE-QEPAS) based on a single-line spot pattern multi-pass cell (MPC) is reported for trace gas detection.
Ruyue Cui, Dong, Lei, Weidong Chen, Cui, Ruyue, Frank K. Tittel, Hongpeng Wu, Lei Dong, Chen, Weidong, Tittel, Frank, Wu, Hongpeng   +9 more
core   +1 more source

Photoacoustic Techniques for Trace Gas Sensing Based on Semiconductor Laser Sources

Sensors, 2009
The paper provides an overview on the use of photoacoustic sensors based on semiconductor laser sources for the detection of trace gases. We review the results obtained using standard, differential and quartz enhanced photoacoustic techniques.
Vincenzo Spagnolo, Cinzia Di Franco, Angela Elia, Pietro Mario Lugarà   +3 more
doaj   +1 more source

Spider Silk-Improved Quartz-Enhanced Conductance Spectroscopy for Medical Mask Humidity Sensing

Molecules, 2022
Spider silk is one of the hottest biomaterials researched currently, due to its excellent mechanical properties. This work reports a novel humidity sensing platform based on a spider silk-modified quartz tuning fork (SSM-QTF). Since spider silk is a kind
Leqing Lin, Yu Zhong, Haoyang Lin, Chenglong Wang, Zhifei Yang, Qian Wu, Di Zhang, Wenguo Zhu, Yongchun Zhong, Yuwei Pan, Jianhui Yu, Huadan Zheng   +11 more
doaj   +1 more source

Benzene sensing by Quartz Enhanced Photoacoustic Spectroscopy at 14.85 µm

Optics Express, 2022
Benzene is a gas known to be highly pollutant for the environment, for the water and cancerogenic for humans. In this paper, we present a sensor based on Quartz Enhanced Photoacoustic Spectroscopy dedicated to benzene analysis. Exploiting the infrared emission of a 14.85 µm quantum cascade laser, the sensor is working in an off-beam configuration ...
Ayache, Diba, Trzpil, Wioletta, Rousseau, Roman, Kinjalk, Kumar, Teissier, Roland, Baranov, Alexei, Bahriz, Michael, Vicet, Aurore   +7 more
openaire   +3 more sources

Measurement of the methane isotopologues relaxation rate exploiting quartz-enhanced photoacoustic spectroscopy

, 2022
In this work, we study the non-radiative energy relaxation rate of methane isotopologues in the mid-infrared spectral range, at about 7.719 μm. We exploited quartz-enhanced photoacoustic spectroscopy to measure the photoacoustic signal at different ...
Sampaolo A., Patimisco P., Menduni G., Giglio M., Sukhinets A., Zifarelli A., Di Gioia M., Spagnolo V., Olivieri M., Elefante A., Arianna Elefante, Marilena Giglio, Anton Sukhinets, Michele Di Gioia, Mariagrazia Olivieri, Pietro Patimisco, Giansergio Menduni, Andrea Zifarelli, Vincenzo Spagnolo, Angelo Sampaolo   +19 more
core   +1 more source

1D U-Net Enhanced QEPAS Sensor for Trace Water Vapor Detection

Optics
We report a deep learning-assisted quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for trace water vapor detection in air. A 1392 nm butterfly-packaged DFB laser is wavelength-modulated at f0/2, and the QEPAS signal is retrieved by second ...
Huiming Xiao, Jiahui Wu, Haoyang Lin, Lihao Wang, Jianfeng He, Leqing Lin, Ruobin Zhuang, Guantian Hong, Jiabao Xie, Jianhui Yu, Wenguo Zhu, Yongchun Zhong, Zhigang Song, Huadan Zheng   +13 more
doaj   +1 more source

Review of Recent Advances in QEPAS-Based Trace Gas Sensing

Applied Sciences, 2018
Quartz-enhanced photoacoustic spectroscopy (QEPAS) is an improvement of the conventional microphone-based photoacoustic spectroscopy. In the QEPAS technique, a commercially available millimeter-sized piezoelectric element quartz tuning fork (QTF) is used
Yufei Ma
doaj   +1 more source