Mid-infrared Gas Sensing Using Graphene Plasmons Tuned by Reversible Chemical Doping [PDF]
, 2020 Highly confined plasmon modes in nanostructured graphene can be used to detect tiny quantities of biological and gas molecules. In biosensing, a specific biomarker can be concentrated close to graphene, where the optical field is enhanced, by using an ad-
Alani, Rose +4 more
core +3 more sources
Miniaturized photoacoustic trace gas sensing using a raman fiber amplifier [PDF]
, 2015 This paper presents the development of a Raman fiber amplifier optical source with a maximum output power of 1.1 W centered around 1651 nm, and its application in miniaturized 3D printed photoacoustic spectroscopy (PAS) trace gas sensing of methane.
Bauer, Ralf +6 more
core +1 more source
Highly Sensitive Capacitive MEMS for Photoacoustic Gas Trace Detection
Sensors, 2023 An enhanced MEMS capacitive sensor is developed for photoacoustic gas detection. This work attempts to address the lack of the literature regarding integrated and compact silicon-based photoacoustic gas sensors. The proposed mechanical resonator combines
Tarek Seoudi +7 more
doaj +1 more source
Quartz-enhanced photo-acoustic spectroscopy for breath analyses [PDF]
, 2017 peer ...
Feng, P +5 more
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Photoacoustic technique for the characterization of plasmonic properties of 2D periodic arrays of gold nanoholes [PDF]
, 2017 We apply photo-acoustic (PA) technique to examine plasmonic properties of 2D periodic arrays of nanoholes etched in gold/chromium layer upon a glass ...
Bovino, FABIO ANTONIO +4 more
core +2 more sources
All optical quartz-enhanced photoacoustic spectroscopy
Acta Physica Sinica, 2013 A trace gas sensor based on all optical quartz-enhanced photoacoustic spectroscopy (QEPAS) is designed and demonstrated. An extra detection light beam is added to the traditional QEPAS setup to convert the amplitude of vibration of the quartz tuning fork, which is proportional to the concentration of the target gas, into the variation of the detection ...
null Liu Yan-Yan +7 more
openaire +1 more source
Review of Recent Advances in QEPAS-Based Trace Gas Sensing
Applied Sciences, 2018 Quartz-enhanced photoacoustic spectroscopy (QEPAS) is an improvement of the conventional microphone-based photoacoustic spectroscopy. In the QEPAS technique, a commercially available millimeter-sized piezoelectric element quartz tuning fork (QTF) is used
Yufei Ma
doaj +1 more source
Quartz enhanced photoacoustic H2S gas sensor based on a fiber-amplifier source and a custom tuning fork with large prong spacing [PDF]
, 2015 A quartz enhanced photoacoustic spectroscopy (QEPAS) sensor, employing an erbium-doped fiber amplified laser source and a custom quartz tuning fork (QTF) with its two prongs spaced ∼800 μm apart, is reported.
Dong, Lei +12 more
core +1 more source
Quartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing
Optics Express, 2021 A trace gas detection technique of quartz-enhanced photoacoustic-photothermal spectroscopy (QEPA-PTS) is demonstrated. Different from quartz-enhanced photoacoustic spectroscopy (QEPAS) or quartz-enhanced photothermal spectroscopy (QEPTS), which detected only one single kind of signal, QEPA-PTS was realized by adding the photoacoustic and photothermal ...
Yinqiu Hu +4 more
openaire +2 more sources
Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications [PDF]
, 2017 A design is presented for an acoustically resonant cell, based on the excitation of azimuthal resonances, to enhance the sensitivity of multi-pass photoacoustic spectroscopy.
Bauer, Ralf +2 more
core +1 more source