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.
Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.
General Physics
Sep 6, 2024
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813
Cornell University researchers have demonstrated that acoustic sound waves can be used to control the motion of an electron as it orbits a lattice defect in a diamond, a technique that can potentially improve the sensitivity ...
Condensed Matter
Aug 26, 2024
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180
EPFL researchers have succeeded in directing floating objects around an aquatic obstacle course using only soundwaves. Their novel, optics-inspired method holds great promise for biomedical applications such as noninvasive ...
Optics & Photonics
Jun 25, 2024
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4
Professor Jin-ho Chang's research team from the Department of Electrical Engineering and Computer Science at DGIST has developed "Ultrasound-assisted photothermal therapy (ULTRA-PTT)" technology that significantly enhances ...
Optics & Photonics
Jun 25, 2024
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0
Conventional drug delivery is often like cracking a nut with a sledgehammer. Whether the drug is swallowed, injected, inhaled, or absorbed through the skin, it ultimately diffuses to most parts of the body, including those ...
Bio & Medicine
Jun 19, 2024
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99
Ultrasound-based wireless power transfer is becoming a more attractive option to power implanted biomedical devices because it could overcome many of the limitations and challenges facing other wireless charging approaches. ...
Bio & Medicine
May 20, 2024
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18
Researchers at Pohang University of Science and Technology (POSTECH) have achieved a breakthrough in surpassing the limitations of traditional acoustic metalenses. They have successfully developed the first wide field-of-hearing ...
Optics & Photonics
May 14, 2024
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19
Researchers at the University of Rochester have used surface acoustic waves to overcome a significant obstacle in the quest to realize a quantum internet.
Optics & Photonics
May 13, 2024
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80
Researchers at the University of Copenhagen's Niels Bohr Institute have developed a new way to create quantum memory: A small drum can store data sent with light in its sonic vibrations, and then forward the data with new ...
Optics & Photonics
Apr 15, 2024
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212
The inside of underwater pipes and enclosed nuclear containers were inaccessible—until recently. Acoustics researchers in Penn State's College of Engineering have developed a way to convey energy and transmit communications ...
Condensed Matter
Feb 16, 2024
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48
