Results 1 to 10 of about 4,011 (183)

Sub-10 nm near-field localization by plasmonic metal nanoaperture arrays with ultrashort light pulses [PDF]

Near-field localization by ultrashort femtosecond light pulses has been investigated using simple geometrical nanoapertures. The apertures employ circular, rhombic, and triangular shapes to localize the distribution of surface plasmon.
Kim, C, Kim, D, Lee, H
core   +1 more source

Planar Laser-Based QEPAS Trace Gas Sensor

Sensors, 2016
A novel quartz enhanced photoacoustic spectroscopy (QEPAS) trace gas detection scheme is reported in this paper. A cylindrical lens was employed for near-infrared laser focusing.
Yufei Ma, Ying He, Cheng Chen, Xin Yu, Jingbo Zhang, Jiangbo Peng, Rui Sun, Frank K. Tittel   +7 more
doaj   +1 more source

Harmonic phase-sensitive detection for quartz-enhanced photoacoustic-thermoelastic spectroscopy

Photoacoustics
Quartz tuning fork (QTF)-based techniques of photoacoustic spectroscopy and thermoelastic spectroscopy play a significant role in trace gas sensing due to unique high sensitivity and compactness.
Mengpeng Hu, Dongqing Zhang, Hui Zhang, Yu Liu, Weibiao Wang, Qiang Wang   +5 more
doaj   +1 more source

A Miniaturized QEPAS Trace Gas Sensor with a 3D-Printed Acoustic Detection Module

Sensors, 2017
A 3D printing technique was introduced to a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor and is reported for the first time. The acoustic detection module (ADM) was designed and fabricated using the 3D printing technique and the ADM volume ...
Xiaotao Yang, Youhong Xiao, Yufei Ma, Ying He, Frank K. Tittel   +4 more
doaj   +1 more source

Quartz-Enhanced Photoacoustic Spectroscopy Assisted by Partial Least-Squares Regression for Multi-Gas Measurements. [PDF]

Sensors (Basel), 2023
Rasmussen AN, Thomsen BL, Christensen JB, Petersen JC, Lassen M.   +4 more
europepmc   +1 more source

Dual-Component Beat-Frequency Quartz-Enhanced Photoacoustic Spectroscopy Gas Detection System

Photonics
This study designed and validated a dual-component beat-frequency quartz-enhanced photoacoustic spectroscopy (BF-QEPAS) gas detection system utilizing time-division multiplexing (TDM).
Hangyu Xu, Yiwen Feng, Zihao Chen, Zhenzhao Zhuang, Jinbao Xia, Yiyang Zhao, Sasa Zhang   +6 more
doaj   +1 more source

Détection par un diapason de quartz en spectroscopie d'absorption infra-rouge

, 2011
International audienceLes diapasons horlogers de quartz se sont avérés des détecteurs efficaces en spectroscopie IR, couplés à une détection synchrone.
Euphrasie, Sébastien, Hirtz, Patricia, Jalocha, Alain, Marthouret, Nadège, Moec, Samuel, Rincon Castillo, Boris Leonardo, Spajer, Michel, Vacheret, Xavier, Vairac, Pascal, Vernier, David   +9 more
core   +1 more source

Accessibility and enzymatic degradation of native and model cellulose substrates [PDF]

, 2011
This thesis investigated two issues relevant to the bioconversion of lignocellulosic biomass. The first part relates to the accessibility of cellulose in wood, more specifically, the impact of initial drying on wood ultrastructure.
Suchy, Miro
core  

A Miniaturized 3D-Printed Quartz-Enhanced Photoacoustic Spectroscopy Sensor for Methane Detection with a High-Power Diode Laser. [PDF]

Sensors (Basel), 2023
Chen Y, Liang T, Qiao S, Ma Y.
europepmc   +1 more source

Continuous real-time monitoring of carbon dioxide emitted from human skin by quartz-enhanced photoacoustic spectroscopy. [PDF]

Photoacoustics, 2023
Zhang Y, Xie Y, Lu J, Zhao J, Wu Y, Tong J, Shao J.   +6 more
europepmc   +1 more source