Acoustic techniques are experimental or analytical methods that exploit the generation, propagation, and detection of sound or ultrasound waves to probe material, structural, or environmental properties. They encompass approaches such as acoustic emission monitoring, ultrasonic testing, impedance and resonance measurements, and acoustic spectroscopy. These techniques rely on wave–matter interactions (reflection, refraction, scattering, absorption) to infer parameters including elastic moduli, defect distributions, phase composition, flow characteristics, or biological tissue structure. Acoustic methods are widely used for nondestructive evaluation, in situ monitoring, and real-time sensing, often offering high sensitivity to microstructural changes and the ability to operate in opaque or complex media.
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
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
With pulses of sound through tiny speakers, Cornell physics researchers have clarified the basic nature of a new superconductor.
Superconductivity
May 9, 2024
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143
Researchers at AMOLF, in collaboration with partners from Germany, Switzerland, and Austria, have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion. It provides a novel form of ...
Condensed Matter
Mar 27, 2024
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872
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
A team of researchers from the Institute for Optoelectronic Systems and Microtechnology at Universidad Politécnica de Madrid (UPM) has designed a biosensor capable of identifying proteins and peptides in quantities as low ...
A team of scientists at the Max Planck Institute for the Science of Light led by Dr. Birgit Stiller has succeeded in cooling traveling sound waves in waveguides considerably further than has previously been possible using ...
Optics & Photonics
Jan 18, 2024
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