Results 1 to 10 of about 3,337,551 (141)

Quartz-Enhanced Photoacoustic Spectroscopy: A Review [PDF]

Sensors, 2014
A detailed review on the development of quartz-enhanced photoacoustic sensors (QEPAS) for the sensitive and selective quantification of molecular trace gas species with resolved spectroscopic features is reported.
Pietro Patimisco, Gaetano Scamarcio, Frank K. Tittel, Vincenzo Spagnolo   +3 more
doaj   +12 more sources

Quartz-Enhanced Photoacoustic Spectroscopy for One-Health [PDF]

EPJ Web of Conferences, 2023
We report on the development of Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) technology to detect 8 different air pollutants, namely CH4, NO2, CO2, N2O, CO, NO, SO2 and NH3, with the same acoustic detection module and interchangeable laser sources,
Patimisco Pietro, Zifarelli Andrea, De Palo Raffaele, Menduni Giansergio, Sampaolo Angelo, Giglio Marilena, Weih Robert, Nauschütz Josephine, Koeth Johannes, Spagnolo Vincenzo   +9 more
doaj   +3 more sources

Quartz-Enhanced Photoacoustic Spectroscopy in the Terahertz Spectral Range

Photonics, 2023
Infrared laser photo-acoustic spectroscopy provides very high sensitivity of a gas sample analysis when high-power tunable laser radiation sources and resonant photo-acoustic detectors (PADs) are used.
Alexey P. Votintsev, Alexey V. Borisov, Didar R. Makashev, Mariya Y. Stoyanova, Yury V. Kistenev   +4 more
doaj   +5 more sources

Quartz Enhanced Photoacoustic Spectroscopy Based on a Custom Quartz Tuning Fork [PDF]

Sensors, 2019
We have designed and fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency; a larger gap between the prongs; and the best quality factor in air at atmospheric conditions ever reported, to our knowledge.
Maxime Duquesnoy, Guillaume Aoust, Jean-Michel Melkonian, Raphaël Lévy, Myriam Raybaut, Antoine Godard   +5 more
doaj   +5 more sources

Folded-optics-based quartz-enhanced photoacoustic and photothermal hybrid spectroscopy

Photoacoustics
Folded-optics-based quartz-enhanced photoacoustic and photothermal hybrid spectroscopy (FO-QEPA-PTS) is reported for the first time. In FO-QEPA-PTS, the detection of the photoacoustic and photothermal hybrid signal is achieved through the use of a custom
Ruyue Cui, Hongpeng Wu, Frank K. Tittel, Vincenzo Spagnolo, Weidong Chen, Lei Dong   +5 more
doaj   +4 more sources

Dual-comb quartz-enhanced photoacoustic spectroscopy

Photoacoustics, 2022
Photoacoustic spectroscopy (PAS) using two optical combs is a new-born technique, offering appealing features, including broad optical bandwidths, high resolutions, fast acquisition speeds, and wavelength-independent photoacoustic detection, for chemical
Xinyi Ren, Ming Yan, Zhaoyang Wen, Hui Ma, Ran Li, Kun Huang, Heping Zeng   +6 more
doaj   +3 more sources

Quartz-Enhanced Photoacoustic and Photothermal Spectroscopy [PDF]

Applied Sciences, 2022
The development of innovative gas-sensing systems is fundamental in diverse research fields such as physics, chemistry, biology, medicine and environmental science [...]
Hongpeng Wu, Angelo Sampaolo
doaj   +2 more sources

Ppb-level gas detection using on-beam quartz-enhanced photoacoustic spectroscopy based on a 28 kHz tuning fork

Photoacoustics, 2022
In this paper, an on-beam quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) acting as a photoacoustic transducer, was realized and tested. The QTF is characterized by a resonance frequency of 28 kHz, ~15%
Haoyang Lin, Huadan Zheng, Baiyang Antonio Zhou Montano, Hongpeng Wu, Marilena Giglio, Angelo Sampaolo, Pietro Patimisco, Wenguo Zhu, Yongchun Zhong, Lei Dong, Ruifeng Kan, Jianhui Yu, Vincenzo Spagnolo   +12 more
doaj   +3 more sources

Influence of Tuning Fork Resonance Properties on Quartz-Enhanced Photoacoustic Spectroscopy Performance

Sensors, 2019
A detailed investigation of the influence of quartz tuning forks (QTFs) resonance properties on the performance of quartz-enhanced photoacoustic spectroscopy (QEPAS) exploiting QTFs as acousto-electric transducers is reported.
Huadan Zheng, Haoyang Lin, Lei Dong, Yihua Liu, Pietro Patimisco, John Zweck, Ali Mozumder, Angelo Sampaolo, Vincenzo Spagnolo, Bincheng Huang, Jieyuan Tang, Linpeng Dong, Wenguo Zhu, Jianhui Yu, Zhe Chen, Frank K. Tittel   +15 more
doaj   +3 more sources

A High Sensitivity Preamplifier for Quartz Tuning Forks in QEPAS (Quartz Enhanced PhotoAcoustic Spectroscopy) Applications

Sensors, 2017
All the preamplifiers dedicated for Quartz Enhanced PhotoAcoustic Spectroscopy (QEPAS) applications that have so far been reported in the literature have been based on operational amplifiers working in transimpedance configurations.
Tomasz Starecki, Piotr Z. Wieczorek
doaj   +3 more sources