Quartz-Enhanced Photoacoustic Spectroscopy with Right-Angle Prism [PDF]
Sensors, 2016 A right-angle prism was used to enhance the acoustic signal of a quartz-enhanced photoacoustic spectroscopy (QEPAS) system. The incident laser beam was parallelly inverted by the right-angle prism and passed through the gap between two tuning fork prongs
Yongning Liu +5 more
doaj +5 more sources
Quartz-Enhanced Photoacoustic and Photothermal Spectroscopy [PDF]
Applied Sciences, 2022 The development of innovative gas-sensing systems is fundamental in diverse research fields such as physics, chemistry, biology, medicine and environmental science [...]
Hongpeng Wu, Angelo Sampaolo
doaj +2 more sources
Quartz-Enhanced Photoacoustic Spectroscopy for One-Health [PDF]
EPJ Web of Conferences, 2023 We report on the development of Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) technology to detect 8 different air pollutants, namely CH4, NO2, CO2, N2O, CO, NO, SO2 and NH3, with the same acoustic detection module and interchangeable laser sources,
Patimisco Pietro +9 more
doaj +2 more sources
Quartz-enhanced multiheterodyne resonant photoacoustic spectroscopy
Light: Science & ApplicationsThe extension of dual-comb spectroscopy (DCS) to all wavelengths of light along with its ability to provide ultra-large dynamic range and ultra-high spectral resolution, renders it extremely useful for a diverse array of applications in physics ...
Jiapeng Wang +6 more
doaj +4 more sources
Monolithic Double Resonator for Quartz Enhanced Photoacoustic Spectroscopy [PDF]
Applied Sciences, 2021 A new approach for Quartz Enhanced Photoacoustic Spectroscopy is presented, based on an acoustic excitation from the outside of the prongs of a quartz tuning fork, to increase the sensitivity of the sensor.
Roman Rousseau +5 more
doaj +2 more sources
Quartz-Enhanced Photoacoustic Spectroscopy in the Terahertz Spectral Range
Photonics, 2023 Infrared laser photo-acoustic spectroscopy provides very high sensitivity of a gas sample analysis when high-power tunable laser radiation sources and resonant photo-acoustic detectors (PADs) are used.
Alexey P. Votintsev +4 more
doaj +3 more sources
Quartz-Enhanced Photoacoustic Spectroscopy Sensor with a Small-Gap Quartz Tuning Fork [PDF]
Sensors, 2018 A highly sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) with a small-gap of 200 μm was demonstrated.
Yu-Fei Ma +4 more
doaj +2 more sources
Effect of gas turbulence in quartz-enhanced photoacoustic spectroscopy: A comprehensive flow field analysis [PDF]
PhotoacousticsHere we present a computational and experimental fluid dynamics study for the characterization of the flow field within the gas chamber of a Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor, at different flow rates at the inlet of the chamber ...
Andrea Zifarelli +9 more
doaj +2 more sources
Conductance-photoacoustic spectroscopy for fast and concurrent sensing of hydrogen and hydrocarbons [PDF]
PhotoacousticsAccurate and rapid detection of hydrogen and hydrocarbons is critical for safety and efficiency in modern energy, industrial, and environmental systems.
Ruobin Zhuang +11 more
doaj +2 more sources
Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method [PDF]
PhotoacousticsQuartz-enhanced photoacoustic spectroscopy (QEPAS) is a promising technique for trace gas sensing, offering advantages such as compact size and high sensitivity. However, noise remains a critical factor limiting detection sensitivity.
Yingchao Xie +10 more
doaj +2 more sources