Results 81 to 90 of about 1,607 (170)

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

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

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, Qiao, Shunda, He, Ying, Lang, Ziting, Ma, Yufei, Tittel, Frank K, Tittel, Frank K., Spagnolo, Vincenzo, Patimisco, Pietro   +8 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

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

Magnetically Controllable and Degradable Milliscale Swimmers as Intraocular Drug Implants

Advanced Science, Volume 12, Issue 34, September 11, 2025.
Magnetically controllable degradable milliscale swimmers (MDMS) offer a promising alternative to commercial intraocular drug implants, reducing complications like implant dislocation and uncontrolled drug release. MDMS achieve high velocities in ocular environments, enable real‐time imaging, and deliver drugs effectively without disrupting retinal ...
Erdost Yildiz, Ugur Bozuyuk, Eray Yildiz, Fan Wang, Mertcan Han, Alp Can Karacakol, Devin Sheehan, Yan Yu, Metin Sitti   +8 more
wiley   +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

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, Sampaolo, Angelo, Bidaux, Yves, Bismuto, Alfredo, Scott, Marshall, Jiang, James, Muller, Antoine, Faist, Jerome, Tittel, Frank K., SPAGNOLO, Vincenzo Luigi   +9 more
openaire   +4 more sources

Optomechanical Properties of Swine Skin Tissue Treated With a Nontoxic Optical Clearing Agent

Journal of Biophotonics, Volume 18, Issue 8, August 2025.
Experimental process to evaluate the optomechanical and structural properties of individual macroscopic layers in swine skin tissues treated with a nontoxic optical clearing agent. ABSTRACT This study evaluated the optomechanical and structural properties of individual macroscopic layers in swine skin tissues treated with a nontoxic optical clearing ...
Noemi Correa, Minji Suh, Abdul Mohizin, Jinu Sudhakaran, Kee Sung Lee, Jung Kyung Kim   +5 more
wiley   +1 more source

Quartz-enhanced photoacoustic spectroscopy

, 2003
Methods and apparatus for detecting photoacoustic signals in fluid media are described. The present invention differs from conventional photoacoustic spectroscopy in that rather than accumulating the absorbed energy in the fluid of a sample cell, the ...
Kosterev, Anatoliy A.
core