Ultrahigh sensitive trace gas sensing system with dual fiber-optic cantilever multiplexing-based differential photoacoustic detection

X Zhao, Z Wang, C Li, H Wang, H Qi, M Guo… - Analytical …, 2024 - ACS Publications
An ultrahigh sensitive trace gas sensing system was presented with dual cantilever-based
differential photoacoustic detection. By combining the double enhancement of multipass …

Cantilever enhanced fiber-optic photoacoustic microprobe for diffusion detection of sulfur dioxide

X Zhao, H Qi, Z Wang, F Ma, C Li, M Guo… - Sensors and Actuators B …, 2024 - Elsevier
A cantilever enhanced fiber-optic photoacoustic microprobe with the cavity volume of only
119 μL is designed to detect SO 2, which has the obvious advantages of passive sensing …

High-precision photoacoustic nitrogen dioxide gas analyzer for fast dynamic measurement

H Qi, G Zhang, L Xu, L Yang, Z Wang, Y Xu… - Analytical …, 2024 - ACS Publications
A high-precision photoacoustic (PA) gas analyzer for fast dynamic measurement of ambient
nitrogen dioxide (NO2) was developed. The PA analyzer used a differential PA cell …

Fiber-optic photoacoustic gas sensor with multiplexed fabry–pérot interferometric cantilevers

C Li, M Guo, Z Wang, X Zhao, H Qi, X Han… - Analytical …, 2023 - ACS Publications
A fiber-optic photoacoustic (PA) gas sensor with multiplexed Fabry–Pérot (F–P)
interferometric cantilevers is demonstrated. A compact cylindrical nonresonant PA tube with …

High-Precision Multipass Fiber-Optic Photoacoustic Gas Analyzer Based on 2f/1f Wavelength Modulation Spectroscopy

Y Xu, H Wang, H Qi, X Zhao, M Guo, Y Zhang… - Analytical …, 2024 - ACS Publications
A self-calibration fiber-optic photoacoustic (PA) gas analyzer based on 2 f/1 f wavelength
modulation spectroscopy (WMS) is proposed, which utilizes gas and solid multipass …

Disturbance-immune, fast response LITES gas sensor based on out-plane vibration mode employing micro Fabry-Perot cavity with heterodyne phase demodulation

Z Lang, S Qiao, Y He, Y Ma - Sensors and Actuators B: Chemical, 2024 - Elsevier
The disturbance-immune, fast response light-induced thermoelastic spectroscopy (LITES)
gas sensor based on out-plane vibration (OPV) mode employing micro Fabry-Perot cavity …

Differential Cantilever Enhanced Fiber-Optic Photoacoustic Sensor for Diffusion Gas Detection

C Li, Y Zhang, M Guo, H Qi, X Zhao… - Analytical Chemistry, 2024 - ACS Publications
Aiming at the problem of the fiber-optic photoacoustic (PA) sensor being easily disturbed by
external vibration and noise, a differential cantilever enhanced fiber-optic PA sensor is …

Rapid photoacoustic exhaust gas analyzer for simultaneous measurement of nitrogen dioxide and sulfur dioxide

H Qi, X Zhao, Y Xu, L Yang, J Liu, K Chen - Analytical Chemistry, 2024 - ACS Publications
A rapid photoacoustic (PA) exhaust gas analyzer is presented for simultaneous
measurements of nitrogen dioxide (NO2) and sulfur dioxide (SO2). A laser diode (LD) …

Fiber-optic trace gas sensing based on graphite excited photoacoustic wave

X Han, C Li, M Guo, X Zhao, Z Wang, H Qi… - Sensors and Actuators B …, 2024 - Elsevier
A fiber-optic trace gas sensing system based on photoacoustic (PA) effect of solids is
reported. The modulated laser light absorbed by the gas is incident on a graphite sheet. The …

All-optical photoacoustic detection of SF6 decomposition component SO2 based on fiber-coupled UV-LED

X Zhao, Y Xu, C Li, H Qi, M Guo, F Ma… - Sensors and Actuators B …, 2024 - Elsevier
An all-optical photoacoustic sensor for measuring the concentration of SF 6 decomposition
derivative SO 2 was designed, whose detection limit was in the order of ppb-level. An UV …