Results 91 to 100 of about 6,705 (186)

Photoacoustic Spectroscopy in a Supersonic Flow

The Journal of Physical Chemistry A
Photoacoustic spectroscopy (PAS) is a sensitive broadband absorption technique relying on simple and inexpensive components. Despite this, PAS has never been applied in a cold supersonic environment. The reason for this is clear: how can one detect an acoustic signal under supersonic conditions?
Liu, Yanan, Khatri, Jai, Thawoos, Shameemah, Suas-David, Nicolas, Suits, Arthur G.   +4 more
openaire   +2 more sources

Biomimetic TME‐Responsive Nanotheranostics for Precise NIR‐II Ratiometric Photoacoustic Imaging and Synergistic Immuno‐Photothermal Therapy

Small, EarlyView.
A biomimetic Au/Ag@HMON‐NLG@CCM nanotheranostic is engineered for tumor microenvironment‐responsive NIR‐II ratiometric photoacoustic imaging and immune‐photothermal therapy. The integration of hyperthermia‐triggered immunogenic cell death with IDO‐blockade‐mediated metabolic remodeling promotes dendritic cell maturation and T‐cell activation.
Xin Li, Hongrui Qiu, Lik Hang Hugo Tse, Xuehan Wang, Hsuan Lo, Huili Wang, Qi Li, Shiying Li, Yanjuan Gu, Wing‐tak Wong   +9 more
wiley   +1 more source

Carbon monoxide‐triggered near‐infrared photoacoustic‐fluorescent integrated visualization tool for auxiliary diagnosis of heart failure and evaluation of reversal drug efficacy

Smart Molecules, EarlyView.
An activatable metal‐free probe CS‐CO enables the first non‐invasive photoacoustic/fluorescence visualization of carbon monoxide (CO) fluctuations during heart failure and its reversal, linking CO levels directly to disease status. Abstract Heart failure (HF), a major global health challenge with high morbidity and mortality, lacks effective biomarkers
Hongze He, Jingrui Yang, Yu Wu, Ping Lin, Tianxiao Lai, Junjie Jia, Jiangfeng Li, Weiying Lin   +7 more
wiley   +1 more source

Engineering Nanoscale Frontiers: Valve Metal Oxide Nanostructures From Fundamentals to Multifunctional Biomedical Applications

The Chemical Record, EarlyView.
Valve metal oxide nanostructures such as TiO2, Ta2O5, Nb2O5, ZrO2, and HfO2 are emerging as versatile biomedical platforms due to their tunable surface properties, exceptional stability, and inherent biocompatibility. This review highlights their synthesis, physicochemical properties, and biological interactions, addressing their roles in advanced ...
Nina Kummer, Désirée Gül, İdris Sargin, Mustafa Dolaz, Dzmitry Shcharbin, Shirley K. Knauer, Burcu Önal Acet, Emrah Dikici, Mingyuan Gao, Mehmet Odabaşı, Ömür Acet, Roland H. Stauber   +11 more
wiley   +1 more source

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, Volume 36, Issue 46, 8 June 2026.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Plasmonic–Diamond Hybrids: Tunable Optical and Thermal Response for Nanoscale Applications

Advanced Theory and Simulations, Volume 9, Issue 6, June 2026.
Finite‐element simulations demonstrate that nanodiamond cores precisely regulate plasmonic coupling, absorption, electric‐field confinement, and photothermal heating in gold and silver nanoparticle clusters. By identifying interparticle spacing, particle number, core conductivity, and surrounding refractive index as key design parameters, this work ...
Muhammad Qamar, Ghulam Abbas, Bohuslav Rezek   +2 more
wiley   +1 more source

Counterfeit Citri Reticulatae Pericarpium Identification: Multi‐Class Detection Using Vis/NIR Spectroscopy and Residual Neural Networks

Food Science &Nutrition, Volume 14, Issue 6, June 2026.
Citri Reticulatae Pericarpium (CRP) samples undergo authentic processing through natural air drying and preservation, whereas counterfeit CRP can be produced through high‐temperature treatment, chemical agents, dyeing, or acid–alkali processing. Vis/NIR spectral analysis combined with WGAN‐GP augmentation and Inception‐ResNet classification captures ...
Chao Ma, Mingkun Zhang, Jianwei Ma, Sudan Chen, Yunxia Yuan, Mingtong Du, Zhiyong Dai   +6 more
wiley   +1 more source

Excitonic Transitions and Off-resonant Optical Limiting in CdS Quantum Dots Stabilized in a Synthetic Glue Matrix

Nanoscale Research Letters, 2007
Stable films containing CdS quantum dots of mean size 3.4 nm embedded in a solid host matrix are prepared using a room temperature chemical route of synthesis.
Suchand Sandeep CS, Philip Reji, Kurian PushpaAnn, Vijayan C, Sathiyamoorthy K   +4 more
doaj   +1 more source

A Compact Highly Sensitive Cone–Sphere Photoacoustic Spectroscopy Sensor for Real-Time Detection of Dissolved Acetylene in Transformer Oil

Photonics
In this work, we report a compact and highly sensitive photoacoustic spectroscopy (PAS) system based on a cone–sphere coupled photoacoustic cell (CSC-PAC) for real-time detection of trace acetylene (C2H2) dissolved in transformer oil.
Jiao Yang, Yazhou Liu
doaj   +1 more source

Signal Enhancement of a Differential Photoacoustic Cell by Connecting the Microphones via Capillaries

Sensors
Differential photoacoustic spectroscopy (DPAS) cells are usually excited on the first longitudinal ring mode, with a microphone situated in the middle of each of the two resonator tubes.
Andrey Boyko, Birgit Lange, Sebastian Eckert, Fedor Mayorov, Ralf Brinkmann   +4 more
doaj   +1 more source