Results 51 to 60 of about 60,263 (232)

Mitigation of artifacts due to isolated acoustic heterogeneities in photoacoustic computed tomography using a variable data truncation-based reconstruction method [PDF]

, 2017
Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue.
Anastasio, Mark A., Li, Lei, Matthews, Thomas P., Poudel, Joemini, Wang, Lihong V.   +4 more
core   +2 more sources

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

Advanced Functional Materials, EarlyView.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova, Ivan V. Zelepukin, Lyubov V. Gorelik, Anton L. Popov, Andrei I. Pastukhov, Gleb V. Tikhonowski, Maxim S. Savinov, Danil D. Kolmanovich, Nikita A. Pivovarov, Alina Yu. Kapitannikova, Anton A. Popov, Anna S. Sogomonyan, Vsevolod A. Skribitsky, Aziz B. Mirkasymov, Andrei V. Kabashin, Sergey M. Deyev   +15 more
wiley   +1 more source

Mechanical Strength Evaluation of Elastic Materials by Multiphysical Nondestructive Methods: A Review

Applied Sciences, 2020
The main purpose of industrial nondestructive testing (NDT) is to diagnose the stability, reliability and failure probability of materials, components and structures. Industrial component mechanical strength is one of the most important properties NDT is
Huiting Huan, Lixian Liu, Andreas Mandelis, Cuiling Peng, Xiaolong Chen, Jinsong Zhan   +5 more
doaj   +1 more source

Theoretical analysis of photoacoustic effects in a multilayered skin tissue model

AIP Advances, 2023
Due to its noninvasiveness, high resolution, and high sensitivity, photoacoustic imaging has developed rapidly in the field of biomedicine. However, research on dermatosis detection by photoacoustic imaging is still lacking.
Na Cao, Yanhua Li, Ruoyu Zhang, Shubin Liu, Yuping Xiong, Hui Cao   +5 more
doaj   +1 more source

Anodically Bonded Photoacoustic Transducer: An Approach towards Wafer-Level Optical Gas Sensors

Sensors, 2022
We present a concept for a wafer-level manufactured photoacoustic transducer, suitable to be used in consumer-grade gas sensors. The transducer consists of an anodically bonded two-layer stack of a blank silicon wafer and an 11 µm membrane, which was wet-
Simon Gassner, Rainer Schaller, Matthias Eberl, Carsten von Koblinski, Simon Essing, Mohammadamir Ghaderi, Katrin Schmitt, Jürgen Wöllenstein   +7 more
doaj   +1 more source

Molecular imaging of oxidative stress using an LED-based photoacoustic imaging system. [PDF]

, 2019
LED-based photoacoustic imaging has practical value in that it is affordable and rugged; however, this technology has largely been confined to anatomic imaging with limited applications into functional or molecular imaging.
Hariri, Ali, Jeevarathinam, Ananthakrishna Soundaram, Jokerst, Jesse V, Lemaster, Jeanne, Zhang, Jianjian, Zhao, Eric   +5 more
core  

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

Off-axis photoacoustic microscopy [PDF]

SPIE Proceedings, 2010
Photoacoustic microscopy (PAM) is a high-contrast, high-resolution imaging modality, used primarily for imaging hemoglobin and melanin. Important applications include mapping of the microvasculature and melanoma tumor margins. We demonstrate a novel PAM design that markedly simplifies the implementation by separating the optical illumination from the ...
Ryan L, Shelton, Brian E, Applegate
openaire   +2 more sources

Methodological Comparison between a Novel Automatic Sampling System for Gas Chromatography versus Photoacoustic Spectroscopy for Measuring Greenhouse Gas Emissions under Field Conditions

Sensors, 2016
Trace gases such as nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) are climate-related gases, and their emissions from agricultural livestock barns are not negligible.
Alexander J. Schmithausen, Manfred Trimborn, Wolfgang Büscher   +2 more
doaj   +1 more source

Indocyanine green loaded graphene oxide for high-efficient photoacoustic tumor therapy [PDF]

Journal of Innovative Optical Health Sciences, 2016
Photoacoustic therapy, using the photoacoustic effect of agents for selectively killing tumor cells, has shown promising for treating tumor. Utilization of high optical absorption probes can help to effectively improve the photoacoustic therapy ...
Baoyun Yan, Huan Qin
doaj   +1 more source