Results 31 to 40 of about 3,337,551 (141)

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
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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

Supplementary document for Helmholtz-resonator quartz-enhanced photoacoustic spectroscopy - 6293880.pdf

, 2023
Helmholtz-resonator quartz-enhanced photoacoustic ...
Zhifei Yang (14613332), Qian Wu (209382), Chenglong Wang (4385533), Yongchun Zhong (2293609), Haoyang Lin (14613329), Huadan Zheng (6504797), Huijian Luo (14613326), Wenguo Zhu (3955415), JianHui Yu (4528867), Ruifeng Kan (6611132)   +9 more
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Optical gas sensing: a review [PDF]

, 2013
The detection and measurement of gas concentrations using the characteristic optical absorption of the gas species is important for both understanding and monitoring a variety of phenomena from industrial processes to environmental change.
Hodgkinson, Jane, Tatam, Ralph P.
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
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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
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Cantilever-Enhanced Photoacoustic Spectroscopy of Radioactive Methane [PDF]

, 2020
We report the first high-resolution spectroscopy study of radiocarbon methane, 14CH4. Several absorption lines of the fundamental vibrational band n3 were measured using a continuous-wave mid-infrared optical parametric oscillator with cantilever ...
Lauri Halonen, Vainio, Markku, Halonen, L., Juho Karhu, Karhu, J., Teemu Tomberg, Markus Metsälä, Genoud, G., Markku Vainio, Hieta, Tuomas, Vainio, M., Tuomas Hieta, Tomberg, T., Tomberg, Teemu, Larnimaa, S., Metsälä, Markus, Hieta, T., Karhu, Juho, Halonen, Lauri, Guillaume Genoud, Larnimaa, Santeri, Genoud, Guillaume, Metsälä, M., Santeri Larnimaa   +23 more
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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
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Quartz-enhanced photoacoustic spectroscopy employing pilot line manufactured custom tuning forks

Photoacoustics, 2020
Pilot line manufactured custom quartz tuning forks (QTFs) with a resonance frequency of 28 kHz and a Q value of >30, 000 in a vacuum and ∼ 7500 in the air, were designed and produced for trace gas sensing based on quartz enhanced photoacoustic ...
Huadan Zheng, Yihua Liu, Haoyang Lin, Bin Liu, Xiaohang Gu, Dongquan Li, Bincheng Huang, Yichao Wu, Linpeng Dong, Wenguo Zhu, Jieyuan Tang, Heyuan Guan, Huihui Lu, Yongchun Zhong, Junbin Fang, Yunhan Luo, Jun Zhang, Jianhui Yu, Zhe Chen, Frank K. Tittel   +19 more
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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