Scientists have demonstrated for the first time how 'twisted' sound waves from a rotating source can produce negative frequencies—akin to turning back time.
Optics & Photonics
Mar 27, 2018
0
63
In today's "internet of things," devices connect primarily over short ranges at high speeds, an environment in which surface acoustic wave (SAW) devices have shown promise for years, resulting in the shrinking size of your ...
General Physics
Dec 20, 2017
0
81
A new strategy for sending acoustic waves through water could potentially open up the world of high-speed communications activities underwater, including scuba diving, remote ocean monitoring, and deep-sea exploration.
General Physics
Jun 26, 2017
2
422
Ultrasound—sound with frequencies higher than those audible to humans—is commonly used in diagnostic imaging of the body's soft tissues, including muscles, joints, tendons and internal organs. A technology called high-intensity ...
General Physics
Jun 26, 2017
0
22
An elegantly simple experiment with floating particles self-assembling in response to sound waves has provided a new framework for studying how seemingly lifelike behaviors emerge in response to external forces.
General Physics
Jun 19, 2017
0
2368
Researchers at the University of Campinas's Gleb Wataghin Physics Institute (IFGW-UNICAMP) in São Paulo State, Brazil, have theorized a silicon photonic device that would enable optical and mechanical waves vibrating at ...
General Physics
Jun 7, 2017
0
9
Astronomers have constructed the first map of the universe based on the positions of supermassive black holes, which reveals the large-scale structure of the universe.
Astronomy
May 19, 2017
4
587
Researchers at the Institute of Acoustics (IOA) of the Chinese Academy of Sciences have designed and fabricated an underwater acoustic carpet cloak using transformation acoustics, a scientific first. The research was published ...
General Physics
May 8, 2017
0
12
Last year Asier Marzo, then a doctoral student at the Public University of Navarre, helped develop the first single-sided acoustic tractor beam—that is, the first realization of trapping and pulling an object using sound ...
General Physics
Jan 3, 2017
6
1982
Materials exposed to a high-radiation environment such as the inside of a nuclear reactor vessel can gradually degrade and weaken. But to determine exactly how much damage these materials suffer generally requires removing ...
Condensed Matter
Dec 13, 2016
0
382
