Results 41 to 50 of about 25,059 (249)

Comparison of the CRLC Models Describing the Helmholtz Type Cells for the Nondestructive Photoacoustic Spectroscopy

Metrology and Measurement Systems, 2014
The photoacoustic cell is the heart of the nondestructive photoacoustic method. This article presents a new simple lumped-components CRLC model of the Helmholtz type photoacoustic cell.
Bartłomiej Chrobak Łukasz, Andrzej Maliński Mirosław   +1 more
doaj   +1 more source

Photo-acoustic dual-frequency comb spectroscopy

Nature Communications, 2020
Here, the authors show that the resolution and speed limitations in broadband photo-acoustic spectroscopy can be overcome by combining dual-comb spectroscopy with photo-acoustic detection.
Thibault Wildi, Thibault Voumard, Victor Brasch, Gürkan Yilmaz, Tobias Herr   +4 more
doaj   +1 more source

Exploring excited states of Pt(ii) diimine catecholates for photoinduced charge separation [PDF]

, 2015
The intense absorption in the red part of the visible range, and the presence of a lowest charge-transfer excited state, render Platinum(II) diimine catecholates potentially promising candidates for light-driven applications.
Abakumov, Anbalagan, Arnaut, Auburn, Barthram, Barthram, Best, Bhattacharya, Bhattacharya, Carlos Serpa, Churchill, Clifford, Creber, Cummings, Deibel, Deibel, Eichberger, Geary, Geary, Gensch, Gratzel, Gratzel, Griffith, Haga, Haga, Haque, Haram, Harry Adams, Hartl, Hill, Hirani, Holliman, Hugh D. Burrows, Igor V. Sazanovich, Islam, Jarosz, Julia A. Weinstein, Kamath, Katoh, Katoh, Koops, Kwok, Lee, Manuta, Meacham, Milan Delor, Miller, Moehl, Moser, Nazeeruddin, Nazeeruddin, Novoa, Patra, Patricia Jesus, Paul A. Scattergood, Paw, Price, Santos, Sazanovich, Serpa, Shavaleev, Shukla, Wang, Ward, Weinstein, Yang   +65 more
core   +2 more sources

Modelling of open photoacoustic resonators

Photoacoustics, 2020
Photoacoustic spectroscopy employs acoustic resonators for signal amplification. Resonators are usually closed, however, in some applications, open resonators are preferred. The opening deteriorates the photoacoustic signal hence reducing the sensitivity
Said Ali Said El-Busaidy, Bernd Baumann, Marcus Wolff, Lars Duggen   +3 more
doaj   +1 more source

Botanical Authentication of “Espinheira-Santa” [Monteverdia ilicifolia (Mart. ex Reissek) Biral] Samples by FTIR Spectroscopy Coupled with PCA and Photoacoustic Spectroscopy

Brazilian Archives of Biology and Technology, 2023
Monteverdia ilicifolia (Mart. ex Reissek) Biral (basionym: Maytenus ilicifolia Mart. ex Reissek) (Celastraceae) is popularly known as holy thorn or “espinheira-santa” in Brazil. This herb is traditionally used for gastric and digestive problems. However,
Mylena de França Martins, Marcia Viviane Marcon, Cynthia Maria Schnekenberg Egg, Daniele Toniolo Dias, Jane Manfron, Jessica Mendes Nadal, Paulo Vitor Farago, Andressa Novatski   +7 more
doaj   +1 more source

Discrete Imaging Models for Three-Dimensional Optoacoustic Tomography using Radially Symmetric Expansion Functions [PDF]

, 2014
Optoacoustic tomography (OAT), also known as photoacoustic tomography, is an emerging computed biomedical imaging modality that exploits optical contrast and ultrasonic detection principles.
Er Oraevsky, Kun Wang, Mark A. Anastasio, Richard Su, Robert W. Schoonover, Senior Member   +5 more
core   +1 more source

In vivo characterization of connective tissue remodeling using infrared photoacoustic spectra [PDF]

, 2018
Premature cervical remodeling is a critical precursor of spontaneous preterm birth, and the remodeling process is characterized by an increase in tissue hydration.
Alisio, Mariana, Altieri, Emma, Anderson, Monica, Barber, Sabrina, Burger, Tracy, Chubiz, Jessica, Diveley, Emily, England, Sarah K, Garcia-Uribe, Alejandro, Goldstein, Naomi, Helm, Kristi, Hu, Peng, Kramer, Christine, Li, Chiye, Ma, Jun, Macones, George A, Maslov, Konstantin, Maynard, Jennifer, McCarthy, Ronald, Meyenburg, Kaytelyn, Meyers, Karen, Muench, Lisa, Onwumere, Oji, Pizzella, Stephanie, Punyamurthy, Nina, Qu, Yuan, Shi, Junhui, Slaughter, Janessia, Stout, Molly J, Tuuli, Methodius, Wang, Lihong V, Zhao, Peinan   +31 more
core   +1 more source

Effects of optical attenuation, heat diffusion and acoustic coherence in photoacoustic signals produced by nanoparticles

, 2018
Behavior of the photoacoustic signal produced by nanoparticles as a function of their concentration was studied in detail. As the concentration of nanoparticles is increased in a sample, the peak-to-peak photoacoustic amplitude increases linearly up to a
Alba-Rosales, J. E., Escamilla-Herrera, L. F., Gutiérrez-Juárez, G., Polo-Parada, L., Ramos-Ortiz, G., Reyes-Ramírez, B.   +5 more
core   +1 more source

Ferritin‐Doped Nanoparticles Triggered Tumor‐Specific Darkening for Enhanced Photothermal Tumor Ablation and Immune Activation

Advanced Healthcare Materials, EarlyView.
Ferritin‐doped hybrid nanoparticles triggered accurate tumor‐specific hemorrhage for enhanced in situ photothermal therapy and evoked anti‐tumor immunity. Notably, HFn/GA‐Fe specifically induced tumor hemorrhage 12 h after intravenous injection, resulting in visible color darkening. Through photoacoustic imaging, tumor vessels could be clearly observed
Haidong Zha, Xiao Liang, Long Xi, Jiamao Chen, Wenzhao Zhong, Zhen Yuan, Meng Xu, Ying Zheng   +7 more
wiley   +1 more source

Towards optimized naphthalocyanines as sonochromes for photoacoustic imaging in vivo

Photoacoustics, 2018
In this paper we establish a methodology to predict photoacoustic imaging capabilities from the structure of absorber molecules (sonochromes). The comparative in vitro and in vivo screening of naphthalocyanines and cyanine dyes has shown a substitution ...
Mitchell J. Duffy, Oriol Planas, Andreas Faust, Thomas Vogl, Sven Hermann, Michael Schäfers, Santi Nonell, Cristian A. Strassert   +7 more
doaj   +1 more source