Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Yinqiu, Hu"'
Publikováno v:
地质科技通报, Vol 42, Iss 2, Pp 41-59 (2023)
The Miaoya complex in Hubei Province hosts one of the most important REE deposit in China. This complex is composed of syenite, carbonatite (SiO2 < 10%), and a suite of silica-rich carbonatite (SiO2>30%). The petrology and mineralogy of silica-rich c
Externí odkaz:
https://doaj.org/article/923098185a8e45c6aabbf168ebe5ed8f
Publikováno v:
Photoacoustics, Vol 25, Iss , Pp 100329- (2022)
In this paper, we report on the performance of quartz tuning fork (QTF) based laser spectroscopy sensing employing multiple QTFs. To avoid that resonance frequency mismatching of the QTFs degrades the sensor performance, two types of resonance freque
Externí odkaz:
https://doaj.org/article/a6639cd1e86145ec8b876cf9d3e424bb
Publikováno v:
Photoacoustics, Vol 20, Iss , Pp 100206- (2020)
A multi-quartz-enhanced photothermal spectroscopy (M-QEPTS) based trace gas detection method is reported for the first time. Different from traditional QEPTS sensor employing a single quartz tuning fork (QTF) as a photothermal detector, two QTFs were
Externí odkaz:
https://doaj.org/article/04ae697846774af58780e46a24154a61
Autor:
Shunda Qiao, Yanchen Qu, Yufei Ma, Ying He, Yao Wang, Yinqiu Hu, Xin Yu, Zhonghua Zhang, Frank K. Tittel
Publikováno v:
Sensors, Vol 19, Iss 19, p 4187 (2019)
A photoacoustic spectroscopy (PAS) based carbon dioxide (CO2) sensor with a fixed wavelength quantum cascade laser (FW-QCL) was demonstrated. The emission wavelength of the FW-QCL at 4.42 μm in the mid-infrared spectral region matched a fundamental
Externí odkaz:
https://doaj.org/article/b38f0e090b5a44b3bd1fdfb1d0676bb7
Publikováno v:
Photoacoustics, Vol 20, Iss, Pp 100206-(2020)
Photoacoustics
Photoacoustics
A multi-quartz-enhanced photothermal spectroscopy (M-QEPTS) based trace gas detection method is reported for the first time. Different from traditional QEPTS sensor employing a single quartz tuning fork (QTF) as a photothermal detector, two QTFs were
Publikováno v:
Conference on Lasers and Electro-Optics.
An ultra-high sensitive trace gas sensing method based on quartz-enhanced photothermal spectroscopy (QEPTS) with significant advantages of standoff and remote sensing ability will be reported.
Autor:
Wang Yao, Shunda Qiao, Yufei Ma, Xin Yu, Zhonghua Zhang, Ying He, Yanchen Qu, Frank K. Tittel, Yinqiu Hu
Publikováno v:
Sensors, Vol 19, Iss 19, p 4187 (2019)
Sensors
Volume 19
Issue 19
Sensors (Basel, Switzerland)
Sensors
Volume 19
Issue 19
Sensors (Basel, Switzerland)
A photoacoustic spectroscopy (PAS) based carbon dioxide (CO2) sensor with a fixed wavelength quantum cascade laser (FW-QCL) was demonstrated. The emission wavelength of the FW-QCL at 4.42 &mu
m in the mid-infrared spectral region matched a funda
m in the mid-infrared spectral region matched a funda
Publikováno v:
Optics Express. 29:5121
A trace gas detection technique of quartz-enhanced photoacoustic-photothermal spectroscopy (QEPA-PTS) is demonstrated. Different from quartz-enhanced photoacoustic spectroscopy (QEPAS) or quartz-enhanced photothermal spectroscopy (QEPTS), which detec