[HTML][HTML] High-sensitivity methane detection based on QEPAS and H-QEPAS technologies combined with a self-designed 8.7 kHz quartz tuning fork
T Liang, S Qiao, Y Chen, Y He, Y Ma - Photoacoustics, 2024 - Elsevier
Methane (CH 4) is a greenhouse gas as well as being flammable and explosive. In this
manuscript, quartz-enhanced photoacoustic spectroscopy (QEPAS) and heterodyne QEPAS …
manuscript, quartz-enhanced photoacoustic spectroscopy (QEPAS) and heterodyne QEPAS …
Quartz‐enhanced photoacoustic sensors for detection of eight air pollutants
R De Palo, A Elefante, G Biagi… - Advanced Photonics …, 2023 - Wiley Online Library
A quartz‐enhanced photoacoustic spectroscopy sensor architecture capable of detecting
eight different air pollutants (CH4, NO2, CO2, N2O, CO, NO, SO2, and NH3) is reported …
eight different air pollutants (CH4, NO2, CO2, N2O, CO, NO, SO2, and NH3) is reported …
[HTML][HTML] Methane and ethane detection from natural gas level down to trace concentrations using a compact mid-IR LITES sensor based on univariate calibration
A gas sensor based on light-induced thermo-elastic spectroscopy (LITES) capable to detect
methane (C1) and ethane (C2) in a wide concentration range, from percent down to part-per …
methane (C1) and ethane (C2) in a wide concentration range, from percent down to part-per …
[HTML][HTML] Assessment of vibrational-translational relaxation dynamics of methane isotopologues in a wet-nitrogen matrix through QEPAS
Here we report on a study of the non-radiative relaxation dynamic of 12 CH 4 and 13 CH 4 in
wet nitrogen-based matrixes by using the quartz-enhanced photoacoustic spectroscopy …
wet nitrogen-based matrixes by using the quartz-enhanced photoacoustic spectroscopy …
Detection of hydrogen sulfide in sewer using an erbium-doped fiber amplified diode laser and a gold-plated photoacoustic cell
A photoacoustic detection module based on a gold-plated photoacoustic cell was reported
in this manuscript to measure hydrogen sulfide (H2S) gas in sewers. A 1582 nm distributed …
in this manuscript to measure hydrogen sulfide (H2S) gas in sewers. A 1582 nm distributed …
[HTML][HTML] Quartz-enhanced photoacoustic spectroscopy (QEPAS) and Beat Frequency-QEPAS techniques for air pollutants detection: A comparison in terms of …
In this work, a comparison between Quartz Enhanced Photoacoustic Spectroscopy (QEPAS)
and Beat Frequency-QEPAS (BF-QEPAS) techniques for environmental monitoring of …
and Beat Frequency-QEPAS (BF-QEPAS) techniques for environmental monitoring of …
[HTML][HTML] Multi-gas quartz-enhanced photoacoustic sensor for environmental monitoring exploiting a Vernier effect-based quantum cascade laser
We report on a gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS)
able to detect multiple gas species for environmental monitoring applications, by exploiting a …
able to detect multiple gas species for environmental monitoring applications, by exploiting a …
Signal-to-Noise Ratio Analysis for the Voltage-Mode Read-Out of Quartz Tuning Forks in QEPAS Applications
M Di Gioia, L Lombardi, C Marzocca, G Matarrese… - Micromachines, 2023 - mdpi.com
Quartz tuning forks (QTFs) are employed as sensitive elements for gas sensing applications
implementing quartz-enhanced photoacoustic spectroscopy. Therefore, proper design of the …
implementing quartz-enhanced photoacoustic spectroscopy. Therefore, proper design of the …
Beam combining of a broadly and continuously tunable quantum cascade laser
We report a cost-efficient method to demonstrate the beam combining of five laser elements
in an array of tunable slot waveguide quantum cascade lasers in the mid-infrared region at …
in an array of tunable slot waveguide quantum cascade lasers in the mid-infrared region at …
Multivariate spectral analysis in quartz-enhanced photoacoustic spectroscopy
A Zifarelli, G Menduni, AFP Cantatore… - … Sensing and Nano …, 2023 - spiedigitallibrary.org
Here we report on the application of multivariate analysis on optical sensors for gas
detection based on Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) technique …
detection based on Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) technique …