Results 31 to 40 of about 35,825 (307)

Wideband acoustic microscopy of tissue [PDF]

The Journal of the Acoustical Society of America, 1988
A scanning acoustic microscope (SAM) has been used to measure the elastic properties of tissue with a resolution of around 8 μm (C. M. W. Daft et al., Proc. 1986 IEEE Ultrasonics Symposium, 945—948). This is achieved by broadband excitation of the acoustic lens, and the recording of an undemodulated returning signal.
Daft, C, Briggs, G
openaire   +2 more sources

Multimodal microscopy using 'half and half' contact mode and ultrasonic force microscopy [PDF]

Advances in the design and fabrication of multifunctional nanostructured materials require characterization techniques capable of simultaneously mapping multiple material properties with nanoscale resolution.
Wilson, Neil R., Kinloch, Ian A., Edwards, R. S. (Rachel S.), Young, Robert J. (Robert Joseph), Skilbeck, Mark, Cao, Guangwen, Marsden, Alexander J.   +6 more
core   +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

X-ray free-electron laser induced acoustic microscopy (XFELAM)

Photoacoustics
The X-ray free-electron laser (XFEL) has remarkably advanced X-ray imaging technology and enabled important scientific achievements. The XFEL’s extremely high power, short pulse width, low emittance, and high coherence make possible such diverse imaging ...
Seongwook Choi, Sinyoung Park, Jiwoong Kim, Hyunhee Kim, Seonghee Cho, Sunam Kim, Jaeku Park, Chulhong Kim   +7 more
doaj   +1 more source

Atrial fibrillation designation with micro-Raman spectroscopy and scanning acoustic microscope

Scientific Reports, 2022
Atrial fibrillation (AF) is diagnosed with the electrocardiogram, which is the gold standard in clinics. However, sufficient arrhythmia monitoring takes a long time, and many of the tests are made in only a few seconds, which can lead arrhythmia to be ...
Ugur Parlatan, Seyma Parlatan, Kubra Sen, Ibrahim Kecoglu, Mustafa Ozer Ulukan, Atalay Karakaya, Korhan Erkanli, Halil Turkoglu, Murat Ugurlucan, Mehmet Burcin Unlu, Bukem Tanoren   +10 more
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

ST Quartz Acoustic Wave Sensors with Sectional Guiding Layers

, 2008
We report the effect of removing a section of guiding layer from the propagation paths of ST-quartz Love wave sensors; this offers the ease of fabrication of a polymer guiding layer whilst retaining the native surface of the quartz which may then be used
Michael I. Newton, Newton, Michael, Roach, Paul, Glen McHale, Michael Newton, Newton, MI, McHale, G, McHale, Glen, Roach, P, Paul Roach   +9 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Evaluation of bone growth around bioactive glass S53P4 by scanning acoustic microscopy co-registered with optical interferometry and elemental analysis

Scientific Reports, 2023
Bioactive glass (BAG) is a bone substitute that can be used in orthopaedic surgery. Following implantation, the BAG is expected to be replaced by bone via bone growth and gradual degradation of the BAG.
Axi Holmström, Antti Meriläinen, Jere Hyvönen, Anton Nolvi, Tuomo Ylitalo, Kari Steffen, Robert Björkenheim, Gustav Strömberg, Heikki J. Nieminen, Ivan Kassamakov, Jukka Pajarinen, Leena Hupa, Ari Salmi, Edward Hæggström, Nina C. Lindfors   +14 more
doaj   +1 more source

Experimental Characterization of Mycelium‐Based Composites Under Multiple Loading Conditions

Advanced Engineering Materials, EarlyView.
This study examines the mechanical response of mycelium‐based composites under compression, shear, and tension using mechanical testing and imaging methods. The comparison between unpressed and hot‐pressed specimens shows that hot pressing is associated with higher compression and shear stiffnesses.
Shaghayegh Elahi, Kimiya Tajik, Harvey Shaw, Matti Isakov, Sami Pajunen, Lauri Rautkari   +5 more
wiley   +1 more source