Results 101 to 110 of about 26,357 (239)

2D van der Waals System Integrated with Targeting Radio‐Diagnostic and Imaging Functions

Small, EarlyView.
Layered double hydroxide (LDH) nanoplates were engineered for tumor‐targeted imaging and therapy. By exploiting folate receptor (FR) expression levels, the system achieves selective tumor accumulation and high‐resolution dual PET/fluorescence (PET/FL) imaging.
Sairan Eom, Jae Hun Ahn, Jung Yung Kim, Kyo Chul Lee, Yong Jin Lee, Sanoj Rejinold N, Jin‐Ho Choy   +6 more
wiley   +1 more source

Avaliação do uso de técnicas FT-IR para caracterização de cobertura polimérica de material energético Evaluation of FT-IR techniques for polymeric coating characterization of energetic material

Polímeros, 2004
Técnicas FT-IR de transmissão, reflexão e fotoacústica (PAS) foram utilizadas para a caracterização da cobertura polimérica do hexahidro-1,3,5-trinitro-1,3,5-triazina (RDX) usando um poliuretano (Estane).
Elizabeth C. Mattos, Rita C. L. Dutra, Milton F. Diniz, Kohun Iha   +3 more
doaj   +1 more source

A variational method for quantitative photoacoustic tomography with piecewise constant coefficients

, 2015
In this article, we consider the inverse problem of determining spatially heterogeneous absorption and diffusion coefficients from a single measurement of the absorbed energy (in the steady-state diffusion approximation of light transfer).
Beretta, Elena, Muszkieta, Monika, Naetar, Wolf, Scherzer, Otmar   +3 more
core   +1 more source

Photoacoustic microscopy achieved by microcavity synchronous parallel acquisition technique

Optics Express, 2012
We report on a sub-cellular resolution photoacoustic microscopy (PAM) system that employs microcavity synchronous parallel acquisition technique for detecting the weak photoacoustic (PA) signal excited by a modulated continuous wave (CW) laser source. The gas microcavity transducer is developed based on the fact that the bulk modulus of the gas is far ...
Zhiliang, Tan, Yanfei, Liao, Yongbo, Wu, Zhilie, Tang, Ruikang K, Wang   +4 more
openaire   +2 more sources

External Stimuli‐Activable Single‐Atom Nanozymes for Bioapplications

Small, EarlyView.
Stimuli‐activable single‐atom nanozymes (SANs) are reviewed from materials design to biomedical applications. We explain electronic‐structure tuning principles and synthesis strategies that maximize the responsiveness of metal active sites and supports to light, ultrasound, and magnetic fields.
Hyun Ko, Jungsue Choi, Hyeonjeong Noh, Sohyeon Seo, Heedong Kwon, Seungjune Lee, Hyoyoung Lee   +6 more
wiley   +1 more source

Activatable smart contrast agents for photoacoustic imaging

Smart Molecules, EarlyView.
This review highlights recent advances in smart activatable photoacoustic imaging (PAI) contrast agents, which dynamically modulate their optical properties in response to external stimuli or microenvironmental cues. It discusses their molecular design, activation mechanisms, biomedical applications, and future prospects for clinically tailored use ...
Donghyeon Oh, Jihye Lee, Suyoung Park, Juyoung Yoon, Won Jong Kim, Chulhong Kim   +5 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

Extracellular matrix and proteolysis: mechanisms driving irreversible changes and shaping cell behavior

The FEBS Journal, EarlyView.
Irreversible ECM proteolysis by remodeling enzymes shapes development, homeostasis, and disease. ECM‐degrading proteases display cell specificity and are governed by shared mechanisms, exhibiting functional redundancy in generating matrikines, growth factors, and cytokines.
Inna Solomonov, Orit Kollet, Irit Sagi
wiley   +1 more source

Zebrafish as a practical and convenient model for the study of photodynamic and photothermal therapy of solid tumors: A scoping review

Photochemistry and Photobiology, EarlyView.
Zebrafish provide a high‐throughput, optically transparent platform for cancer and drug screening. Their ~80% genetic homology, xenograft compatibility, and transgenic strains enable targeted photosensitizer screening, real‐time ROS and tumor imaging, and mechanistic assays, while fish embryo acute toxicity (FET) and in vitro tests streamline toxicity ...
Ethan Wilson, Alexander Fiorentino, Brian W. Booth, Valery Bliznyuk, Diana Ivankovic, Luigi Boccuto   +5 more
wiley   +1 more source

Sound speed resolved by photoacoustic technique

, 2007
"In this work a new method for measuring the speed of sound in materials is reported. This method uses the photoacoustic effect, which is the generation of sound waves by pulsed optical radiation incident on a material sample. The sound waves generated on the surface of the sample travel through the material and are detected with two piezoelectric ...
S.J. Pérez Ruíz, S. Alcántara Iniesta, P.R. Hernández, R. Castañeda-Guzmán   +3 more
openaire   +1 more source