A review of all-optical photoacoustic spectroscopy as a gas sensing method
T Yang, W Chen, P Wang - Applied spectroscopy reviews, 2021 - Taylor & Francis
Photoacoustic spectroscopy (PAS) is an ultrasensitive method for gas sensing, which
usually using a capacitive microphone as a signal detector. However, the electric nature of …
usually using a capacitive microphone as a signal detector. However, the electric nature of …
Ultra-high sensitive photoacoustic gas detector based on differential multi-pass cell
We designed and manufactured a set of high-sensitivity photoacoustic (PA) gas detector
based on differential multi-pass cell (DMPC) with a chamber volume of only 162 mL, which …
based on differential multi-pass cell (DMPC) with a chamber volume of only 162 mL, which …
Photoacoustic spectroscopy gas detection technology research progress
Photoacoustic spectroscopy (PAS) can be utilized as an ultrasensitive gas detection method.
The basic principles of gas detection using PAS are discussed in this paper. First, the basic …
The basic principles of gas detection using PAS are discussed in this paper. First, the basic …
Detection of gaseous halocarbon refrigerants and extinguishing agent based on photoacoustic spectroscopy
A photoacoustic (PA) gaseous halocarbon refrigerants and extinguishing agent detector
based on a mid-infrared broadband source was developed. H1301 (extinguishing agent) …
based on a mid-infrared broadband source was developed. H1301 (extinguishing agent) …
[HTML][HTML] Ppb-level detection of methane based on an optimized T-type photoacoustic cell and a NIR diode laser
This paper presents an optimized T-type resonant photoacoustic (PA) cell for methane (CH
4) gas detection. The noise transmission coefficients and PA field distributions of the T-type …
4) gas detection. The noise transmission coefficients and PA field distributions of the T-type …
Flexible hollow core fiber photoacoustic gas sensor based on embedded acoustic resonant structure
In this paper, we demonstrate a flexible leaky hollow core fiber (LHCF) photoacoustic (PA)
gas sensor based on an embedded acoustic resonant structure. The sensor employs a part …
gas sensor based on an embedded acoustic resonant structure. The sensor employs a part …
[HTML][HTML] Multi-mechanism collaboration enhanced photoacoustic analyzer for trace H2S detection
To realize the real-time highly sensitive detection of SF 6 decomposition product H 2 S, a
multi-mechanism collaboration enhancement photoacoustic spectroscopy analyzer …
multi-mechanism collaboration enhancement photoacoustic spectroscopy analyzer …
Design of a high-sensitivity differential Helmholtz photoacoustic cell and its application in methane detection
Z Li, J Liu, G Si, Z Ning, Y Fang - Optics Express, 2022 - opg.optica.org
A high-sensitivity differential Helmholtz photoacoustic cell based on multiple reflection was
reported, and its performance parameters and gas replacement time were optimized by finite …
reported, and its performance parameters and gas replacement time were optimized by finite …
Highly sensitive photoacoustic gas sensor with micro-embedded acoustic resonator for gas leakage detection
In this work, a photoacoustic (PA) gas sensor with a micro-embedded acoustic resonator for
gas leakage detection was demonstrated. The micro-embedded acoustic resonator was …
gas leakage detection was demonstrated. The micro-embedded acoustic resonator was …
Highly sensitive low-frequency-detectable acoustic sensor using a piezoresistive cantilever for health monitoring applications
This study investigates a cantilever-based pressure sensor that can achieve a resolution of
approximately 0.2 mPa, over the frequency range of 0.1–250 Hz. A piezoresistive cantilever …
approximately 0.2 mPa, over the frequency range of 0.1–250 Hz. A piezoresistive cantilever …