Results 21 to 30 of about 29,948 (253)

Inactivation efficacy of atmospheric air plasma and airborne acoustic ultrasound against bacterial biofilms

Scientific Reports, 2021
Biofilms are complex microbial communities that present serious contamination risks to our environment and health. In this study, atmospheric air plasma and airborne acoustic ultrasound technology were applied to inactivate Escherichia coli and Listeria ...
Apurva D. Patange, Jeremy C. Simpson, James F. Curtin, Catherine M. Burgess, P. J. Cullen, Brijesh K. Tiwari   +5 more
doaj   +1 more source

Apparent attenuation by opto-acoustic defocus in phonon microscopy

Photoacoustics, 2020
Understanding the mechanical properties of biological cells is a challenging problem for the life sciences partly because there are limited methods for mapping elasticity with high resolution.
Fernando Pérez-Cota, Salvatore La Cavera III, Shakila Naznin, Rafael Fuentes-Domínguez, Richard J. Smith, Matt Clark   +5 more
doaj   +1 more source

Quantitative ultrasound biomicroscopy for the analysis of healthy and repair cartilage tissue [PDF]

European Cells & Materials, 2010
The increasing spectrum of different cartilage repair strategies requires the introduction of adequate non-destructive methods to analyse their outcome in-vivo, i.e. arthroscopically. The validity of non-destructive quantitative ultrasound biomicroscopy (
K Gelse, A Olk, S Eichhorn, B Swoboda, M Schoene, K Raum   +5 more
doaj  

Studying the strength and damageability of composite element in looped metal-composite joint under tensile loading

Fracture and Structural Integrity
The article presents the results of computational and experimental studies of the strength and damageability of a connecting composite part in a metal-composite joint of isogrid and anisogrid structures made of polymer composite material under tension ...
Irakly Kacharava, Tatiana Ryzhova, Vladimir Vermel, Alexander Shanygin, Danil Fomin, Yury Mirgorodsky, Nikolay Kovalyov, Yulia Petronyuk, Vadim Levin, Sergey Lekomtsev   +9 more
doaj   +3 more sources

Detection, mapping, and quantification of single walled carbon nanotubes in histological specimens with photoacoustic microscopy. [PDF]

PLoS ONE, 2012
In the present study, the efficacy of multi-scale photoacoustic microscopy (PAM) was investigated to detect, map, and quantify trace amounts [nanograms (ng) to micrograms (µg)] of SWCNTs in a variety of histological tissue specimens consisting of cancer ...
Pramod K Avti, Song Hu, Christopher Favazza, Antonios G Mikos, John A Jansen, Kenneth R Shroyer, Lihong V Wang, Balaji Sitharaman   +7 more
doaj   +1 more source

Mode specific dynamics for the acoustic vibrations of a gold nanoplate

Photoacoustics, 2023
The vibrational modes of semiconductor and metal nanostructures occur in the MHz to GHz frequency range, depending on dimensions. These modes are at the heart of nano-optomechanical devices, and understanding how they dissipate energy is important for ...
Cameron Wright, Gregory V. Hartland
doaj   +1 more source

Light sheet microscopy with acoustic sample confinement

Nature Communications, 2019
Here, the authors integrate an acoustic trap with a compact light sheet fluorescence microscope to provide contactless sample confinement of biological organisms.
Zhengyi Yang, Katy L. H. Cole, Yongqiang Qiu, Ildikó M. L. Somorjai, Philip Wijesinghe, Jonathan Nylk, Sandy Cochran, Gabriel C. Spalding, David A. Lyons, Kishan Dholakia   +9 more
doaj   +1 more source

Acoustic microscopy-a summary

Reports on Progress in Physics, 1992
Acoustic microscopy enables one to image the interaction of acoustic waves with the elastic properties of a specimen with microscopic resolution. A lens with good focusing properties on the axis can be used for both transmitting and receiving the signal, and an image is formed by scanning the lens mechanically over the specimen.
openaire   +1 more source

High resolution ultrasound and photoacoustic imaging of single cells

Photoacoustics, 2016
High resolution ultrasound and photoacoustic images of stained neutrophils, lymphocytes and monocytes from a blood smear were acquired using a combined acoustic/photoacoustic microscope.
Eric M. Strohm, Michael J. Moore, Michael C. Kolios   +2 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source