Results 131 to 140 of about 909 (177)

Highly Sensitive CH₄/C₂H₂ Dual-Component TDLAS Sensor Based on a Dual-Channel Hexagram Multi-Pass Cell. [PDF]

Sensors (Basel)
Liang X, Sun X, Sun H, Wang R, Qiao S, He Y, Ma Y.   +6 more
europepmc   +1 more source

Conductance-photoacoustic spectroscopy for fast and concurrent sensing of hydrogen and hydrocarbons. [PDF]

Photoacoustics
Zhuang R, He J, Lin H, Luo H, Lin L, Wang L, Liu B, Zhu W, Zhong Y, Yu J, Sigrist M, Zheng H.   +11 more
europepmc   +1 more source

Spectroscopic Study of Volatile Organic Compounds for the Assessment of Coffee Authenticity. [PDF]

Molecules
Elefante A, Giglio M, Mongelli L, Bux A, Zifarelli A, Menduni G, Patimisco P, Caratti A, Cagliero C, Liberto E, Cordero C, Navarini L, Spagnolo V, Sampaolo A.   +13 more
europepmc   +1 more source

LITES-Based Sensitive CO₂ Detection Using 2 μm Diode Laser and Self-Designed 9.5 kHz Quartz Tuning Fork. [PDF]

Sensors (Basel)
Mu J, Hou J, Qiu S, Qiao S, He Y, Ma Y.
europepmc   +1 more source

Lithium Niobate - Enhanced Photoacoustic Spectroscopy. [PDF]

Photoacoustics
Cantatore AFP, Menduni G, Zifarelli A, Patimisco P, Gonzalez M, Seren HR, Spagnolo V, Sampaolo A.   +7 more
europepmc   +1 more source

Harmonic phase-sensitive detection for quartz-enhanced photoacoustic-thermoelastic spectroscopy. [PDF]

Photoacoustics
Hu M, Zhang D, Zhang H, Liu Y, Wang W, Wang Q.   +5 more
europepmc   +1 more source

Regulation of qepA efflux pump expression in Escherichia coli

, 2018
openaire   +1 more source

QEPAS sensor using a radial resonator

Applied Physics B, 2021
We report on the use of a radial acoustic resonator to increase the acoustic signal of a quartz enhanced photoacoustic spectroscopy (QEPAS) sensor. This approach is an attractive alternative to usual configurations based on microtube longitudinal resonators since it enables to substantially relax laser beam alignment and positioning and thus paves the ...
M. Duquesnoy, G. Aoust, J.-M. Melkonian, R. Levy, M. Raybaut, A. Godard   +5 more
openaire   +2 more sources

Photoacoustic gas detection with LED QEPAS

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Various configurations and applications have been investigated and realized since the pioneering introduction of quartz-enhanced photoacoustic spectroscopy (QEPAS) by Kosterev et al. in 2002 [1]. However, the required submillimeter diameter of the acoustic resonator demands an excellent beam quality of laser source and precise adjustments of the QEPAS ...
Stefan Bottger, Martin Angelmahr, Wolfgang Schade   +2 more
openaire   +2 more sources

Mid-infrared fiber-coupled QCL-QEPAS sensor

Applied Physics B, 2013
[object Object]
SPAGNOLO, Vincenzo Luigi, Patimisco P., Borri S., Scamarcio G., Bernacki B. E., Kriesel J.   +5 more
openaire   +3 more sources