Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy. [PDF]
Photoacoustics, 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 ...
Ma Y, Hu Y, Qiao S, He Y, Tittel FK.
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A mini-resonant photoacoustic sensor based on a sphere-cylinder coupled acoustic resonator for high-sensitivity trace gas sensing. [PDF]
PhotoacousticsThis paper reports a mini-resonant photoacoustic sensor for high-sensitivity trace gas sensing. The sensor primarily contains a sphere-cylinder coupled acoustic resonator, a cylindrical buffer chamber, and a fiber-optic acoustic sensor.
Wu G +9 more
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Chirped laser dispersion spectroscopy for remote open-path trace-gas sensing. [PDF]
Sensors (Basel), 2012 In this paper we present a prototype instrument for remote open-path detection of nitrous oxide. The sensor is based on a 4.53 μm quantum cascade laser and uses the chirped laser dispersion spectroscopy (CLaDS) technique for molecular ...
Nikodem M, Wysocki G.
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THz QCL-based cryogen-free spectrometer for in situ trace gas sensing. [PDF]
Sensors (Basel), 2013 We report on a set of high-sensitivity terahertz spectroscopy experiments making use of QCLs to detect rotational molecular transitions in the far-infrared.
Consolino L +5 more
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Frontiers in Physics, 2022 In this article, with an anti-resonant hollow core fiber (ARHCF), fiber-enhanced Raman spectroscopy (FERS) for trace-gas sensing in a high-concentration gas background is demonstrated for the first time.
Guochao Qian +8 more
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Integrated Resonant Micro/Nano Gravimetric Sensors for Bio/Chemical Detection in Air and Liquid
Micromachines, 2021 Resonant micro/nanoelectromechanical systems (MEMS/NEMS) with on-chip integrated excitation and readout components, exhibit exquisite gravimetric sensitivities which have greatly advanced the bio/chemical sensor technologies in the past two decades. This
Hao Jia, Pengcheng Xu, Xinxin Li
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Journal of Remote Sensing, 2023 High spatial-temporal resolution distribution of atmospheric gaseous pollutant is an important basis for tracing its emission, transport, and transformation. Typical methods for acquiring regional atmospheric gaseous pollutant distributions are satellite
Chuan Lu +9 more
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Detection of ethane, methane, formaldehyde and water vapor in the 3.33 μm range [PDF]
Metrology and Measurement Systems, 2022 We describe construction and investigation results of optical trace gas sensor working in the 3.334–3.337 μm spectral range. Laser spectroscopy was performed with a multipass cell.
Mateusz Winkowski, Tadeusz Stacewicz
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Characterization and verification of ACAM slit functions for trace-gas retrievals during the 2011 DISCOVER-AQ flight campaign [PDF]
Atmospheric Measurement Techniques, 2015 The Airborne Compact Atmospheric Mapper (ACAM), an ultraviolet/visible/near-infrared spectrometer, has been flown on board the NASA UC-12 aircraft during the Deriving Information on Surface Conditions from Column and Vertically Resolved Observations ...
C. Liu +7 more
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Photoacoustic methane detection inside a MEMS microphone
Photoacoustics, 2023 An innovative laser based photoacoustic (PA) gas sensing concept with intrinsic miniaturization potential was developed and investigated for methane trace gas detection.
Thomas Strahl +4 more
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