Results 31 to 40 of about 3,338,318 (170)

Quartz Enhanced Photoacoustic Spectroscopy Based Trace Gas Sensors Using Different Quartz Tuning Forks [PDF]

Sensors, 2015
A sensitive trace gas sensor platform based on quartz-enhanced photoacoustic spectroscopy (QEPAS) is reported. A 1.395 μm continuous wave (CW), distributed feedback pigtailed diode laser was used as the excitation source and H2O was selected as the ...
Yufei Ma, Guang Yu, Jingbo Zhang, Xin Yu, Rui Sun, Frank K. Tittel   +5 more
doaj   +2 more sources

Off-beam quartz-enhanced photoacoustic spectroscopy with LEDs

Applied Physics B, 2022
S.227-232A photoacoustic ozone sensor based on quartz-enhanced photoacoustic spectroscopy is presented. Instead of a laser, a UV-LED at 285 nm is utilized as light source.
Schade, W., Böttger, S., Willer, U., Köhring, M.   +3 more
core   +2 more sources

Multivariate spectral analysis in quartz-enhanced photoacoustic spectroscopy

Quantum Sensing and Nano Electronics and Photonics XIX, 2023
Here we report on the application of multivariate analysis on optical sensors for gas detection based on Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) technique, focused on the analysis of complex gas mixtures. In real-world applications the effects
Aldo Francesco Pio Cantatore, Giansergio Menduni, Andrea Zifarelli, Christine Hölzl, Vincenzo Spagnolo, Pietro Patimisco   +5 more
core   +2 more sources

Fiber-Coupled Quartz-Enhanced Photoacoustic Spectroscopy System for Methane and Ethane Monitoring in the Near-Infrared Spectral Range. [PDF]

Molecules, 2020
Menduni G, Sgobba F, Russo SD, Ranieri AC, Sampaolo A, Patimisco P, Giglio M, Passaro VMN, Csutak S, Assante D, Ranieri E, Geoffrion E, Spagnolo V.   +12 more
europepmc   +2 more sources

Application of Micro Quartz Tuning Fork in Trace Gas Sensing by Use of Quartz-Enhanced Photoacoustic Spectroscopy. [PDF]

Sensors (Basel), 2019
Lin H, Huang Z, Kan R, Zheng H, Liu Y, Liu B, Dong L, Zhu W, Tang J, Yu J, Chen Z, Tittel FK.   +11 more
europepmc   +2 more sources

Quartz-enhanced photoacoustic spectroscopy for gas sensing applications

, 2020
This chapter aims to introduce quartz-enhanced photoacoustic spectroscopy (QEPAS) for trace gas sensing. Starting from the basic physical principles, the QEPAS technique is described.
Tittel, Frank K., Vincenzo Spagnolo, Frank K. Tittel, Spagnolo, Vincenzo, Patimisco, Pietro, Pietro Patimisco   +5 more
core   +2 more sources

Quartz-enhanced photoacoustic spectroscopy [PDF]

Optics Letters, 2002
A new approach to detecting a weak photoacoustic signal in a gas medium is described. Instead of a gas-filled resonant acoustic cavity, the sound energy is accumulated in a high- Q crystal element. Feasibility experiments utilizing a quartz-watch tuning fork demonstrate a sensitivity of 1.2x10(-7) cm(-1) W/ radicalHz .
A A, Kosterev, Yu A, Bakhirkin, R F, Curl, F K, Tittel   +3 more
openaire   +2 more sources

Recent Advances in QEPAS and QEPTS Based Trace Gas Sensing: A Review

Frontiers in Physics, 2020
This invited review paper summarizes and discusses developments of QTF based state-of-the-art quartz-enhanced photoacoustic spectroscopy (QEPAS) and quartz-enhanced photothermal spectroscopy (QEPTS) gas sensing techniques over the past 3 years.
Yufei Ma
doaj   +1 more source

Highly Sensitive Trace Gas Detection Based on In-Plane Single-Quartz-Enhanced Dual Spectroscopy

Sensors, 2022
For this invited manuscript, an in-plane single-quartz-enhanced dual spectroscopy (IP-SQEDS)-based trace gas sensor was demonstrated for the first time.
Tiantian Liang, Shunda Qiao, Ziting Lang, Yufei Ma   +3 more
doaj   +1 more source

Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy. [PDF]

Sensors (Basel), 2017
Wojtas J, Gluszek A, Hudzikowski A, Tittel FK.   +3 more
europepmc   +2 more sources