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.
A new study led by scientists from the Wildlife Conservation Society (WCS) and Woods Hole Oceanographic Institution (WHOI) reveals that endangered sei whales regularly use the New York Bight as a key spring habitat, underscoring ...
Plants & Animals
Apr 6, 2026
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7
A Jacuzzi for washing your tomatoes might seem odd, but new research finds that a bubble bath with a constant acoustic sound in the water may be the best chemical-free, gentle method for cleaning agricultural produce and ...
Biotechnology
Mar 26, 2026
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9
From GPS satellites to mobile networks, modern technology relies on ultra-precise radio signals. Engineers have long tried to generate them on chips using interactions between light and sound, but the effect was too weak. ...
Optics & Photonics
Mar 19, 2026
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50
Engineers at Duke University have demonstrated a technique that uses microbubbles and ultrasound to help relatively large cancer drugs enter tumor cells and cause them to self-destruct. Dubbed "Sonoporation-assisted Precise ...
Bio & Medicine
Mar 13, 2026
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80
Mosquitoes transmit several pathogens of public health importance, including malaria, dengue, chikungunya and Zika. These vector-borne diseases are responsible for millions of cases every year, and hundreds of thousands of ...
Ecology
Mar 4, 2026
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16
Basketball shoes on a gym floor, bicycle brakes in need of a tune-up, or the squeal of tires are everyday examples of squeaking sounds. Such sounds have long been attributed to stick-slip friction, or a cycle of intermittent ...
General Physics
Feb 25, 2026
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67
Researchers at Case Western Reserve University have discovered a way to breach one of cancer's most stubborn defenses: the impenetrable fortress that solid tumors build around themselves.
Bio & Medicine
Feb 18, 2026
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58
Time crystals, a collection of particles that "tick"—or move back and forth in repeating cycles—were first theorized and then discovered about a decade ago. While scientists have yet to create commercial or industrial applications ...
General Physics
Feb 6, 2026
3
1522
A new technology has been developed that enables cuffless noninvasive blood pressure monitoring by using ultrasonic to track real-time changes in vascular diameter—without the need for a traditional cuff. The technology is ...
Bio & Medicine
Jan 8, 2026
0
43
Using sound to get objects to float works well if a single particle is levitated, but it causes multiple particles to collapse into a clump in mid-air. Physicists at the Institute of Science and Technology Austria (ISTA) ...
General Physics
Dec 2, 2025
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