Results 101 to 110 of about 3,994 (183)
Purely wavelength- and amplitude-modulated quartz-enhanced photoacoustic spectroscopy
Optics Express, 2016 We report here on a quartz-enhanced photoacoustic (QEPAS) sensor employing a quantum cascade laser (QCL) structure capable of operating in a pure amplitude or wavelength modulation configuration. The QCL structure is composed of three electrically independent sections: Gain, Phase (PS) and Master Oscillator (MO).
Patimisco, Pietro +9 more
openaire +4 more sources
Photoacoustic detection of stimulated emission pumping in p-difluorobenzene [PDF]
, 1984 Photoacoustic detection has been used to monitor a stimulated emission pumping process in p‐difluorobenzene. Using the Ã^(1)B_(2u)5^1 state as an intermediate, several vibrational levels of the ground electronic state were populated.
Kuppermann, A. +2 more
core
Small Science, Volume 5, Issue 8, August 2025.Fluorescent silicon carbide quantum dots with excellent biocompatibility and chemical stability are gaining increasing attention. This review resolves the long‐standing debate on their emission origin, demonstrating the dominant role of surface states in radiative recombination.
Mahdi Hasanzadeh Azar +5 more
wiley +1 more source
High Voltage, Volume 10, Issue 4, Page 787-806, August 2025.Abstract Partial discharge (PD) detection is considered one of the most crucial and effective methods for identifying defects in electrical equipment. Consequently, investigating advanced and efficient PD monitoring techniques is essential for the development of gas‐insulated equipment (GIE) and the construction of ultra‐high‐voltage (UHV) networks ...
Xianhao Fan +15 more
wiley +1 more source
Journal of Spectroscopy, 2015 Acoustic microresonators were added to the recently developed multi-QTF based QEPAS spectrophone to enhance the signal amplitude. Two kinds of “on-beam” configurations were experimentally investigated in detail.
Huadan Zheng +8 more
doaj +1 more source
Synthesis of molybdenum oxide nanoparticles by nanosecond laser ablation [PDF]
, 2020 Phothermal therapy (PTT) is one of the most promising techniques to treat cancer. Finding the ideal PTT agent nanomaterial has remained a challenge and has brought the interest of several researchers.
Aguilar, G +6 more
core
Chemistry – A European Journal, Volume 31, Issue 42, July 25, 2025.Novel merocyanine derivatives with a strong diphenyl‐dihydrophenazine donor and a series of strong electron acceptors were developed. The indanone and indandione acceptor units were modified by dicyanovinylene groups to tune acceptor strength. Among these derivatives, DPPZ‐IDD realized an ultranarrow electrochemical gap of 0.93 eV and an optical band ...
Kateřina Teichmanová +8 more
wiley +1 more source
Acoustic Detection Module Design of a Quartz-Enhanced Photoacoustic Sensor
Sensors, 2019 This review aims to discuss the latest advancements of an acoustic detection module (ADM) based on quartz-enhanced photoacoustic spectroscopy (QEPAS). Starting from guidelines for the design of an ADM, the ADM design philosophy is described.
Tingting Wei +3 more
doaj +1 more source
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 +7 more
doaj +1 more source