Results 111 to 120 of about 3,951 (191)

Dual-Component Beat-Frequency Quartz-Enhanced Photoacoustic Spectroscopy Gas Detection System

Photonics
This study designed and validated a dual-component beat-frequency quartz-enhanced photoacoustic spectroscopy (BF-QEPAS) gas detection system utilizing time-division multiplexing (TDM).
Hangyu Xu, Yiwen Feng, Zihao Chen, Zhenzhao Zhuang, Jinbao Xia, Yiyang Zhao, Sasa Zhang   +6 more
doaj   +1 more source

A Miniaturized 3D-Printed Quartz-Enhanced Photoacoustic Spectroscopy Sensor for Methane Detection with a High-Power Diode Laser. [PDF]

Sensors (Basel), 2023
Chen Y, Liang T, Qiao S, Ma Y.
europepmc   +1 more source

Continuous real-time monitoring of carbon dioxide emitted from human skin by quartz-enhanced photoacoustic spectroscopy. [PDF]

Photoacoustics, 2023
Zhang Y, Xie Y, Lu J, Zhao J, Wu Y, Tong J, Shao J.   +6 more
europepmc   +1 more source

Quartz-enhanced photoacoustic spectroscopy (QEPAS) and Beat Frequency-QEPAS techniques for air pollutants detection: A comparison in terms of sensitivity and acquisition time. [PDF]

Photoacoustics, 2023
Li B, Menduni G, Giglio M, Patimisco P, Sampaolo A, Zifarelli A, Wu H, Wei T, Spagnolo V, Dong L.   +9 more
europepmc   +1 more source

Compact and portable quartz-enhanced photoacoustic spectroscopy sensor for carbon monoxide environmental monitoring in urban areas. [PDF]

Photoacoustics, 2022
Sgobba F, Sampaolo A, Patimisco P, Giglio M, Menduni G, Ranieri AC, Hoelzl C, Rossmadl H, Brehm C, Mackowiak V, Assante D, Ranieri E, Spagnolo V.   +12 more
europepmc   +1 more source

Détection par un diapason de quartz en spectroscopie d'absorption infra-rouge

, 2011
International audienceLes diapasons horlogers de quartz se sont avérés des détecteurs efficaces en spectroscopie IR, couplés à une détection synchrone.
Euphrasie, Sébastien, Hirtz, Patricia, Jalocha, Alain, Marthouret, Nadège, Moec, Samuel, Rincon Castillo, Boris Leonardo, Spajer, Michel, Vacheret, Xavier, Vairac, Pascal, Vernier, David   +9 more
core   +1 more source

Quartz-enhanced photoacoustic spectroscopy exploiting low-frequency tuning forks as a tool to measure the vibrational relaxation rate in gas species. [PDF]

Photoacoustics, 2021
Dello Russo S, Sampaolo A, Patimisco P, Menduni G, Giglio M, Hoelzl C, Passaro VMN, Wu H, Dong L, Spagnolo V.   +9 more
europepmc   +1 more source

Ultra-highly sensitive dual gases detection based on photoacoustic spectroscopy by exploiting a long-wave, high-power, wide-tunable, single-longitudinal-mode solid-state laser

Light: Science & Applications
Photoacoustic spectroscopy (PAS) as a highly sensitive and selective trace gas detection technique has extremely broad application in many fields. However, the laser sources currently used in PAS limit the sensing performance. Compared to diode laser and
Shunda Qiao, Ying He, Haiyue Sun, Pietro Patimisco, Angelo Sampaolo, Vincenzo Spagnolo, Yufei Ma   +6 more
doaj   +1 more source

H₂S quartz-enhanced photoacoustic spectroscopy sensor employing a liquid-nitrogen-cooled THz quantum cascade laser operating in pulsed mode. [PDF]

Photoacoustics, 2021
Sampaolo A, Yu C, Wei T, Zifarelli A, Giglio M, Patimisco P, Zhu H, Zhu H, He L, Wu H, Dong L, Xu G, Spagnolo V.   +12 more
europepmc   +1 more source

A high sensitive methane QEPAS sensor based on self-designed trapezoidal-head quartz tuning fork and high power diode laser

Photoacoustics
A high sensitive methane (CH4) sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) using self-designed trapezoidal-head quartz tuning fork (QTF) and high power diode laser is reported for the first time in this paper.
Hanxu Ma, Yanjun Chen, Shunda Qiao, Ying He, Yufei Ma   +4 more
doaj   +1 more source