Sound wave techniques are experimental and analytical methods that generate, manipulate, and detect acoustic waves to probe, image, or modify materials and systems. In research, they encompass ultrasound imaging, acoustic microscopy, non-destructive evaluation via bulk and surface acoustic waves, and acoustic spectroscopy for characterizing elastic, viscoelastic, or porous media. These techniques exploit frequency-dependent propagation, reflection, refraction, scattering, attenuation, and mode conversion of longitudinal and shear waves. They are implemented using piezoelectric transducers or laser-based sources and detectors, and are used to measure mechanical properties, detect defects, monitor processes, and study wave–matter interactions across solid, liquid, and gaseous environments.
ETH Zurich researchers have shown for the first time that microvehicles can be steered through blood vessels in the brains of mice using ultrasound. They hope that this will eventually lead to treatments capable of delivering ...
Bio & Medicine
Dec 7, 2023
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27
A new device created at the University of Notre Dame employs an innovative method for "listening in" on cells' conversations.
Bio & Medicine
Oct 23, 2023
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89
Physicians and researchers rely on biomedical imaging to examine the structure and function of living tissue. This enables disease diagnostics and experiments that reveal the mechanisms behind pathologies and ways to treat ...
Bio & Medicine
Sep 26, 2023
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13
The potential of an ultrafast form of transmission electron microscopy to measure sound waves in nanostructures has been demonstrated by three RIKEN physicists. This could help realize a high-resolution imaging method that ...
Nanophysics
Aug 1, 2023
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688
Ultrasound is a promising technique for treating cancer. Unlike laser light, used in photodynamic cancer therapy, ultrasound waves can reach deep into tissue—up to 12 cm—to treat deep tumors without damaging healthy cells. ...
Bio & Medicine
Jun 14, 2023
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145
Engineers at Duke University have developed a device that uses sound waves to separate and sort the tiniest particles found in blood in a matter of minutes. The technology is based on a concept called "virtual pillars" and ...
Bio & Medicine
Dec 2, 2022
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266
A new technology developed at Tel Aviv University makes it possible to destroy cancerous tumors in a targeted manner, via a combination of ultrasound and the injection of nanobubbles into the bloodstream. According to the ...
Bio & Medicine
Nov 21, 2022
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268
Researchers have developed a new method to measure force and atomic bonds at the nanoscale that reveals that the speed of sound depends on the structure it is traveling through.
Nanomaterials
Sep 16, 2021
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34
