Ppb-level gas detection using on-beam quartz-enhanced photoacoustic spectroscopy based on a 28 kHz tuning fork [PDF]
Photoacoustics, 2022 In this paper, an on-beam quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) acting as a photoacoustic transducer, was realized and tested. The QTF is characterized by a resonance frequency of 28 kHz, ~15%
Haoyang Lin +12 more
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Quartz-Enhanced Photoacoustic Spectroscopy: A Review [PDF]
Sensors, 2014 A detailed review on the development of quartz-enhanced photoacoustic sensors (QEPAS) for the sensitive and selective quantification of molecular trace gas species with resolved spectroscopic features is reported.
Pietro Patimisco +3 more
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Influence of Tuning Fork Resonance Properties on Quartz-Enhanced Photoacoustic Spectroscopy Performance [PDF]
Sensors, 2019 A detailed investigation of the influence of quartz tuning forks (QTFs) resonance properties on the performance of quartz-enhanced photoacoustic spectroscopy (QEPAS) exploiting QTFs as acousto-electric transducers is reported.
Huadan Zheng +15 more
doaj +4 more sources
A High Sensitivity Preamplifier for Quartz Tuning Forks in QEPAS (Quartz Enhanced PhotoAcoustic Spectroscopy) Applications [PDF]
Sensors, 2017 All the preamplifiers dedicated for Quartz Enhanced PhotoAcoustic Spectroscopy (QEPAS) applications that have so far been reported in the literature have been based on operational amplifiers working in transimpedance configurations.
Tomasz Starecki, Piotr Z. Wieczorek
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Dual-comb quartz-enhanced photoacoustic spectroscopy [PDF]
Photoacoustics, 2022 Photoacoustic spectroscopy (PAS) using two optical combs is a new-born technique, offering appealing features, including broad optical bandwidths, high resolutions, fast acquisition speeds, and wavelength-independent photoacoustic detection, for chemical
Xinyi Ren +6 more
doaj +2 more sources
Quartz Enhanced Photoacoustic Spectroscopy on Solid Samples [PDF]
SensorsQuartz-Enhanced Photoacoustic Spectroscopy (QEPAS) is a technique in which the sound wave is detected by a quartz tuning fork (QTF). It enables particularly high specificity with respect to the excitation frequency and is well known for an ...
Judith Falkhofen +3 more
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Quartz-enhanced photoacoustic spectroscopy employing pilot line manufactured custom tuning forks [PDF]
Photoacoustics, 2020 Pilot line manufactured custom quartz tuning forks (QTFs) with a resonance frequency of 28 kHz and a Q value of >30, 000 in a vacuum and ∼ 7500 in the air, were designed and produced for trace gas sensing based on quartz enhanced photoacoustic ...
Huadan Zheng +19 more
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Breath Isoprene Sensor Based on Quartz-Enhanced Photoacoustic Spectroscopy [PDF]
SensorsIsoprene, the most abundant endogenous hydrocarbon in human breath, is a promising biomarker for metabolic and cardiovascular diseases. In this paper, we present the detection of isoprene in exhaled breath using the off-beam Quartz-Enhanced Photoacoustic
Fadia Abou Naoum +11 more
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Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv – Level sensitivity using a T-shaped custom tuning fork [PDF]
Photoacoustics, 2022 Resonant optical power buildup inside a high finesse cavity is exploited to boost the sensitivity in quartz-enhanced photoacoustic spectroscopy (QEPAS) for CO, N2O and H2O detection, operating at a wavelength of 4.59 µm.
Jakob Hayden +4 more
doaj +2 more sources
Commercial and Custom Quartz Tuning Forks for Quartz Enhanced Photoacoustic Spectroscopy: Stability under Humidity Variation [PDF]
Sensors, 2023 This work investigates the behavior of commercial and custom Quartz tuning forkss (QTF) under humidity variations. The QTFs were placed inside a humidity chamber and the parameters were studied with a setup to record the resonance frequency and quality ...
Diba Ayache +8 more
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