Results 1 to 10 of about 13,833 (161)
Atrial fibrillation designation with micro-Raman spectroscopy and scanning acoustic microscope [PDF]
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 +10 more
doaj +2 more sources
All-optical adaptive scanning acoustic microscope [PDF]
Ultrasonics, 2003 We have constructed a fast laser-based surface acoustic wave (SAW) microscope, which may be thought of as a non-perturbing scanning acoustic microscope. The instrument is capable of rapid high resolution vector contrast imaging at several discrete frequencies, without any damage to the sample.
Steve D Sharples, Matt Clark
exaly +3 more sources
A scanning acoustic microscope based on picosecond ultrasonics [PDF]
Ultrasonics, 2015 We report on the development of a new type of scanning acoustic microscope. We use a femtosecond light pulse to generate a short sound pulse, and then focus this sound onto the sample by means of a specially designed and microfabricated acoustic lens of radius a few microns. The sound travels to the sample through a thin layer of water.
P R Guduru, A V Nurmikko, H J Maris
exaly +3 more sources
A scanning acoustic microscope discriminates cancer cells in fluid. [PDF]
Sci Rep, 2015 AbstractScanning acoustic microscopy (SAM) discriminates lesions in sections by assessing the speed of sound (SOS) or attenuation of sound (AOS) through tissues within a few minutes without staining; however, its clinical use in cytological diagnosis is unknown.
Miura K, Yamamoto S.
europepmc +4 more sources
Scanning Acoustic Microscope for 3D imaging
Archives of Acoustics, 2008 A new Acoustic Microscope operating at the frequency up to 200 MHz and allowing for visualization of the internal structures of materials was developed.
Krzysztof DYNOWSKI +2 more
doaj +1 more source
Analysis of effect of thickness and surface treatment on sound transmission loss characteristics of natural fibres [PDF]
Scientific ReportsNoise pollution, driven by rapid urbanisation and city expansion, has created a growing demand for innovative and bio-degradable sound absorption materials.
Methil Vivek Shankar +4 more
doaj +2 more sources
CESAM—Coded excitation scanning acoustic microscope
Review of Scientific Instruments, 2021 Scanning acoustic microscopy (SAM) finds use across many disciplines, e.g., biology, industrial quality control, and materials science, thanks to its unique ability to quantify mechanical sample properties combined with its high resolution. However, such imaging is often slow, especially if averaging is necessary. We present a Coded Excitation Scanning
Antti Meriläinen +3 more
openaire +3 more sources
Frontiers in Neuroscience, 2023 To understand how neural activity encodes and coordinates behavior, it is desirable to record multi-neuronal activity in freely behaving animals. Imaging in unrestrained animals is challenging, especially for those, like larval Drosophila melanogaster ...
Akihiro Yamaguchi +7 more
doaj +1 more source
A Review of UltraHigh Frequency Ultrasonic Transducers
Frontiers in Materials, 2022 The ultrahigh-frequency (UHF) ultrasonic transducers are active in various fields, including nondestructive evaluation in the semiconductor industry, microscopic biological organization imaging in biomedicine, particle manipulation, and so on.
Jun Chen +8 more
doaj +1 more source
Journal of Materials Research and Technology, 2023 The dams formed by rock pillars around underground reservoirs are frequently subjected to drying-wetting cycles, so that rock pillars may be deformed, broken and develop a large number of fractures. This further causes a massive loss of water and heavily
Tengfei Ma +5 more
doaj +1 more source