Results 81 to 90 of about 3,337,551 (141)

Off-beam quartz-enhanced photoacoustic spectroscopy with LEDs

, 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   +1 more source

Sub-ppb level HCN photoacoustic sensor employing dual-tube resonator enhanced clamp-type tuning fork and U-net neural network noise filter

Photoacoustics
Hydrogen cyanide (HCN) is a toxic industrial chemical, necessitating low-level detection capabilities for safety and environmental monitoring. This study introduces a novel approach for detecting hydrogen cyanide (HCN) using a clamp-type custom quartz ...
Lihao Wang, Haohua Lv, Yaohong Zhao, Chenglong Wang, Huijian Luo, Haoyang Lin, Jiabao Xie, Wenguo Zhu, Yongchun Zhong, Bin Liu, Jianhui Yu, Huadan Zheng   +11 more
doaj   +1 more source

Nanoparticles Functionalized with Polymer Brushes for Gene Delivery

Advanced NanoBiomed Research, Volume 5, Issue 10, October 2025.
The engineering of the next generation gene delivery vectors requires the precise control of the architecture and physicochemical interactions controlling the transport, targeting, uptake, and release of nucleic acid materials to targeted cells. Polymer brush‐functionalized nanomaterials offer unprecedented control over such design and properties, and ...
Carlos E. Neri‐Cruz, Julien E. Gautrot
wiley   +1 more source

Advanced methods for enhanced sensing in biomedical Raman spectroscopy [PDF]

, 2015
Raman spectroscopy is a powerful tool in the field of biomedicine for disease diagnosis owing to its potential to provide the molecular fingerprint of biological samples.
Balagopal, Bavishna
core   +1 more source

Quartz-Enhanced Photoacoustic Sensors for Environmental Monitoring

, 2023
Atmospheric composition affects climate, human health, terrestrial and aquatic ecosystems, and is dramatically influenced by human activities. Environmental gas monitoring of pollutant and greenhouse gases in atmosphere are thus fundamental to ...
Sampaolo, Angelo, Giglio, Marilena, Spagnolo, Vincenzo, Elefante, Arianna, Patimisco, Pietro   +4 more
core   +1 more source

Confocal Raman microspectroscopy for spatially resolved tissue characterisation of disease‐linked spectra‐pathological signatures

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, Inka Zörnig, Dirk Jäger   +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, Jane Hodgkinson, Hodgkinson, Jane, John P. Dakin, Dakin, John P., Mark Johnson   +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, Zhen Wang, Simone Borri, Wang, Zhen, Wei Ren, Ren, Wei, Borri, Simone, Nie, Qinxue, Qinxue Nie, Paolo De Natale   +9 more
core   +1 more source

Stable near‐infrared‐IIb dyes based on bis‐Pd(II) complexes of bis(TIPS‐ethynyl)‐substituted doubly N‐confused hexaphyrins

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, Aninda Ghosh, Koki Ogasahara, Yoshihisa Yamaoka, Yuhsuke Yasutake, Susumu Fukatsu, Hiroyuki Furuta, Masatoshi Ishida   +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, Spagnolo, Vincenzo, Patimisco, Pietro, Pietro Patimisco   +3 more
core   +1 more source