Results 91 to 100 of about 3,338,318 (170)
Clinical and Translational Medicine, Volume 15, Issue 10, October 2025.Confocal Raman microspectroscopy for spatially resolved tissue analysis: technology setup, spectra‐pathological signatures derived from computational methods, and tissue‐level insights for biomedical research and clinical applications. Abstract Raman spectroscopy is a versatile analytical technique for highly specific molecular characterisation of ...
Nektarios A. Valous +2 more
wiley +1 more source
Quantitative analysis of a closed photoacoustic cell that uses a high compliance piezoelectric transducer [PDF]
, 2005 A treatment of the operation of low-frequency closed photoacoustic cells is presented, which considers the compliance of various cell elements. The optimum detector, according to our predictions, has a sensor whose compliance is large compared to that
Johnson, Mark +5 more
core +1 more source
Mid-infrared swept cavity-enhanced photoacoustic spectroscopy using a quartz tuning fork
, 2023 We report the development of swept cavity-enhanced photoacoustic spectroscopy using a quartz tuning fork for ultra-sensitive and high-resolution molecular spectroscopy.
Natale, Paolo De +9 more
core +1 more source
Journal of the Chinese Chemical Society, Volume 72, Issue 10, Page 1090-1100, October 2025.A novel anisotropically π‐extended hexaphyrin dye, t‐Pd2‐3, exhibits abnormally low‐energy absorption and emission beyond 1500 nm within the NIR‐IIb biological window. The specific optical feature of t‐Pd2‐3 contributed to its being utilized as a NIR‐IIb‐excitation‐induced photoacoustic contrast agent for deeper tissue imaging applications. Abstract We
Yuriha Nishiguchi +7 more
wiley +1 more source
Quartz‐Enhanced Photoacoustic Spectroscopy for Trace Gas Sensing
, 2021 Photoacoustic spectroscopy (PAS) was established itself over the last decades as a powerful detection technique, capable of measuring trace gas concentrations at part‐per‐billion level.
Vincenzo Spagnolo +3 more
core +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
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
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
Multi-pass quartz-enhanced photoacoustic spectroscopy-based trace gas sensing
, 2021 A multi-pass quartz-enhanced photoacoustic spectroscopy (MP-QEPAS)-based trace gas sensor is reported. In MP-QEPAS, a multi-pass laser beam pattern through the prong spacing of a quartz tuning fork (QTF) is obtained by means of two right-angle prisms.
Sampaolo, Angelo +8 more
core +1 more source
New approaches in quartz-enhanced photoacoustic sensing
, 2015 We report on the design and realization of custom quartz tuning forks with different geometries and sizes aimed to improve the photoacoustic effect in quartz-enhanced photoacoustic (QEPAS) sensor systems.
Sampaolo, Angelo +4 more
core +2 more sources