But when they intersect in space, nonlinear effects cause them to generate a new sound wave at an audible frequency that would be heard only in that specific region. Crucially, we designed ultrasonic ...

While it’s not radar, subbing in ultrasonic sensors is how [Dzl] built ... resultant echoes down in the human-audible range; they sound more like honks than pings, but it’s still pretty ...

“Metasurfaces are engineered materials that manipulate wave behaviour in ways that natural materials cannot,” said Zhong. “In ...

New research offering bendable sound waves that can reach only one set of ears could be the next tech revolution.

The sound is, as the name implies, ultrasonic — so outside the range of human hearing — but strong enough so that the small, light objects can be positioned and held fixed in mid-air where ...

The new tech is called Audible Enclave, and it uses ultrasonic sound waves to create focused “pockets” of sound that only you can hear. Using a series of acoustic lenses, or metasurfaces ...

When the beams intersect, a phenomenon known as difference frequency generation occurs, creating an audible sound. "When two ultrasonic beams of slightly different frequencies, such as 40 kHz and ...

Improve Laboratory Efficiency with Our Ultrasonic Bath Sonicator for Precise Cleaning Efficiency and precision are two ...

This causes the tissue to expand and contract, creating vibrations which can be picked up as ultrasonic sound waves by sensitive detectors. Different materials and molecules inside the tissue ...

(THE CONVERSATION) What if you could listen to music or a podcast without headphones or earbuds and without disturbing anyone around you? Or have a private conversation in public without other ...