Results 111 to 120 of about 3,338,318 (170)

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

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

Evanescent wave quartz-enhanced photoacoustic spectroscopy employing dielectric coated side-polished fibers for sensing applications

We present an all-fiber laser gas analyzer using quartz-enhanced photoacoustic spectroscopy, featuring a dielectric-coated side-polished fiber, custom quartz tuning fork, and acoustic micro-resonators, achieving over 42 times enhancement in QEPAS signal ...
Twomey, Cian F., Ruth, Albert A., Walsh, Anton, Di Falco, Andrea, O'Faolain, Liam, Ali, Farhan, Biagi, Gabriele   +6 more
core  

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

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

Real-time <i>in Vivo</i> monitoring of photosynthesis in individual leaves by frequency-locked quartz-enhanced photoacoustic spectroscopy. [PDF]

Photoacoustics
Liu S, Qin L, Zhou C, Lu J, Liu W, Shao J.   +5 more
europepmc   +1 more source

Partial Least-Squares Regression as a Tool to Retrieve Gas Concentrations in Mixtures Detected Using Quartz-Enhanced Photoacoustic Spectroscopy. [PDF]

Anal Chem, 2020
Zifarelli A, Giglio M, Menduni G, Sampaolo A, Patimisco P, Passaro VMN, Wu H, Dong L, Spagnolo V.   +8 more
europepmc   +1 more source

Elliptical acoustic resonator-enabled synchronous acoustic excitation by multiple laser beams in quartz-enhanced photoacoustic spectroscopy

We report synchronous excitation of an acoustic mode in quartz-enhanced photoacoustic spectroscopy (QEPAS) enabled by an elliptical acoustic resonator under multi-beam illumination. In this configuration, multiple laser beams distributed within the prong
Han, Wenfei, Li, Xinran, Dong, Lei, Wang, Zimu, Ren, Yingzhang, Cui, Ruyue, Li, Chunxia, Xu, Jiale, Spagnolo, Vincenzo, Chen, Weidong, Wu, Hongpeng   +10 more
core   +1 more source