ArticlePhotoacoustics2022
Ultra-sensitive ppb-level methane detection based on NIR all-optical photoacoustic spectroscopy by using differential fiber-optic microphones with gold-chromium composite nanomembrane.
Article in Photoacoustics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 69 citations in OpenAlex.
- A Ppb-level MIR-PAS forPhotoacoustics · 2026Article
- Topological optimization method "MMA-BP" for photoacoustic resonator and implementations in ppt-level gas sensor using miniaturized vase-type photoacoustic cells.Photoacoustics · 2025Article
- Optomechanical energy enhanced BF-QEPAS for fast and sensitive gas sensing.Photoacoustics · 2025Article
- Highly sensitive and miniaturized microcone-curved resonant photoacoustic cavity for trace gas detection.Photoacoustics · 2024Article
- Miniature optical fiber photoacoustic spectroscopy gas sensor based on a 3D micro-printed planar-spiral spring optomechanical resonator.Photoacoustics · 2024Article
- A Review on Photoacoustic Spectroscopy Techniques for Gas Sensing.Sensors (Basel, Switzerland) · 2024Review
- High-sensitivity trace gas detection based on differential Helmholtz photoacoustic cell with dense spot pattern.Photoacoustics · 2024Article
- A mini-resonant photoacoustic sensor based on a sphere-cylinder coupled acoustic resonator for high-sensitivity trace gas sensing.Photoacoustics · 2024Article
- Real-Time Monitoring of Underground Miners' Status Based on Mine IoT System.Sensors (Basel, Switzerland) · 2024Article
- Miniaturized and highly-sensitive fiber-optic photoacoustic gas sensor based on an integrated tuning fork by mechanical processing with dual-prong differential measurement.Photoacoustics · 2023Article
- Gas nanosensors for health and safety applications in mining.Nanoscale advances · 2023Review
- Multivariate analysis and digital twin modelling: Alternative approaches to evaluate molecular relaxation in photoacoustic spectroscopy.Photoacoustics · 2023Article
- Integrated near-infrared fiber-optic photoacoustic sensing demodulator for ultra-high sensitivity gas detection.Photoacoustics · 2023Article
- Photoacoustic spectroscopy-based ppb-level multi-gas sensor using symmetric multi-resonant cavity photoacoustic cell.Photoacoustics · 2023Article
- Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell.Photoacoustics · 2023Article
- T-type cell mediated photoacoustic spectroscopy for simultaneous detection of multi-component gases based on triple resonance modality.Photoacoustics · 2023Article
- Laser Linewidth Analysis and Filtering/Fitting Algorithms for Improved TDLAS-Based Optical Gas Sensor.Sensors (Basel, Switzerland) · 2023Article
- Highly sensitive photoacoustic acetylene detection based on differential photoacoustic cell with retro-reflection-cavity.Photoacoustics · 2023Article
- Impact of 3MeV Energy Proton Particles on Mid-IR QCLs.Nanomaterials (Basel, Switzerland) · 2023Article
- Characterization of HPhotoacoustics · 2023Article
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this paper, we propose and experimentally demonstrate an ultra-sensitive all-optical PAS gas sensor, incorporating with a near-infrared (NIR) diode laser, fiber-optic microphones (FOMs) and a double channel differential T-type photoacoustic cell. The FOM is realized by Fabry-Perot interferometry and novel gold-chromium (Au-Cr) composite nanomembranes. To meet the demand of high sensitivity and flat frequency response for the FOMs, the Au-Cr composite diaphragm is deliberately designed and fabricated by E-beam evaporation deposition with 330 nm in thickness and 6.35 mm in radius. Experimental results show that the FOM has a sensitivity of about 30 V/Pa and a flat frequency response from 300 to 900 Hz with fluctuation below 1 dB. Moreover, a double channel differential T-type photoacoustic cell is designed and employed in the all-optical PAS gas sensor, with the first-order resonant frequency of 610 Hz. The all-optical gas sensor is established and verified for CH
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