Scientists at Sandia National Laboratories have built the world's smallest and best acoustic amplifier. And they did it using a concept that was all but abandoned for almost 50 years.
General Physics
Jun 2, 2021
0
417
Controlling the flow of heat through semiconductor materials is an important challenge in developing smaller and faster computer chips, high-performance solar panels, and better lasers and biomedical devices.
Nanophysics
Nov 10, 2016
0
3363
(Phys.org) —Using little more than a few perforated sheets of plastic and a staggering amount of number crunching, Duke engineers have demonstrated the world's first three-dimensional acoustic cloak. The new device reroutes ...
General Physics
Mar 11, 2014
2
0
Imagine being able to hear people whispering in the next room, while the raucous party in your own room is inaudible to the whisperers. Yale researchers have found a way to do just that—make sound flow in one direction—within ...
General Physics
Apr 3, 2019
2
201
Researchers working at the National Institute of Standards and Technology (NIST) have developed a "piezo-optomechanical circuit" that converts signals among optical, acoustic and radio waves. A system based on this design ...
Optics & Photonics
Mar 28, 2016
0
1874
From the headphones we use to listen to our favorite songs or podcasts, to sonic camouflage employed by submarines, how we transmit and experience sound is an essential part of how we engage with our surrounding world. Acoustic ...
Materials Science
Mar 10, 2020
0
50
The amount of structural damage that radiation causes in electronic materials at the atomic level may be at least ten times greater than previously thought.
General Physics
Jul 20, 2012
1
0
(Phys.org) —Radar systems today depend increasingly on phased-array antennas, an advanced design in which extensive grids of solid state components direct signal beams electronically. Phased array technology is replacing ...
Engineering
Mar 31, 2013
4
0
The way in which radio spectrum is currently allocated to different wireless technologies can lead to gross inefficiencies. In some regions, for instance, the frequencies used by cellphones can be desperately congested, while ...
Electronics & Semiconductors
May 15, 2013
0
0
Thermoelectric devices are highly versatile, with the ability to convert heat into electricity, and electricity into heat. They are small, lightweight, and extremely durable because they have no moving parts, which is why ...
General Physics
Nov 15, 2018
0
5
