Results 61 to 70 of about 218 (120)

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

Tuning forks with optimized geometries for quartz-enhanced photoacoustic spectroscopy

Optics Express, 2019
We report on the design, realization, and performance of novel quartz tuning forks (QTFs) optimized for quartz-enhanced photoacoustic spectroscopy (QEPAS). Starting from a QTF geometry designed to provide a fundamental flexural in-plane vibrational mode resonance frequency of ~16 kHz, with a quality factor of 15,000 at atmospheric pressure, two novel ...
Pietro Patimisco, Angelo Sampaolo, Marilena Giglio, Stefano dello Russo, Verena Mackowiak, Hubert Rossmadl, Alex Cable, Frank K. Tittel, Vincenzo Spagnolo   +8 more
openaire   +3 more sources

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

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

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

Recent Advances in the Synthesis, Optical Properties, and Applications of Fluorescent Silicon Carbide Quantum Dots

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, Jahanbakhsh Jahanzamin, Zimo Ji, Adrian Kitai, David Beke, Adam Gali   +5 more
wiley   +1 more source

Multi-Quartz Enhanced Photoacoustic Spectroscopy with Different Acoustic Microresonator Configurations

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, Xukun Yin, Lei Dong, Hongpeng Wu, Xiaoli Liu, Weiguang Ma, Lei Zhang, Wangbao Yin, Suotang Jia   +8 more
doaj   +1 more source

A review of advanced acoustic‐chemical‐optical partial discharge monitoring techniques for ultra‐high‐voltage gas‐insulated equipment

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, Weiqi Qin, Rui Qiu, Yiming Zang, Wu Lu, Yin Zhang, Ruiying Chen, Fangwei Liang, Guangyu Sun, Hanhua Luo, Tiejun Ma, Chuanyang Li, Jun Hu, Weidong Liu, Giovanni Mazzanti, Jinliang He   +15 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, Hongpeng Wu, Lei Dong, Frank K. Tittel   +3 more
doaj   +1 more source