University of Wisconsin-Madison engineers have created a nanoscale device that can emit light as powerfully as an object 10,000 times its size. It's an advance that could have huge implications for a variety of imaging and ...
Optics & Photonics
Jul 13, 2015
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4707
Researchers have developed a new design for a cloaking device that overcomes some of the limitations of existing "invisibility cloaks." In a new study, electrical engineers at the University of California, San Diego have ...
General Physics
Jul 7, 2015
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2788
University of Utah engineers have taken a step forward in creating the next generation of computers and mobile devices capable of speeds millions of times faster than current machines.
Optics & Photonics
May 18, 2015
17
6507
During a thunderstorm, we all know that it is common to hear thunder after we see the lightning. That's because sound travels much slower (768 miles per hour) than light (670,000,000 miles per hour).
Optics & Photonics
Nov 26, 2014
14
3
At St. Paul's Cathedral in London, a section of the dome called the Whispering Gallery makes a whisper audible from the other side of the dome as a result of the way sound waves travel around the curved surface. Researchers ...
Optics & Photonics
Apr 6, 2014
2
0
A team of MIT researchers has used a novel material that's just a few atoms thick to create devices that can harness or emit light. This proof-of-concept could lead to ultrathin, lightweight, and flexible photovoltaic cells, ...
Nanomaterials
Mar 10, 2014
0
0
Light can trigger coordinated, wavelike motions of atoms in atom-thin layers of crystal, scientists have shown. The waves, called phonon polaritons, are far shorter than light waves and can be "tuned" to particular frequencies ...
General Physics
Mar 6, 2014
1
0
(Phys.org) —Imagine an electronic display nearly as clear as a window, or a curtain that illuminates a room, or a smartphone screen that doubles in size, stretching like rubber. Now imagine all of these being made from ...
Optics & Photonics
Sep 23, 2013
4
0
(Phys.org) —A team of physicists at Kent State University has discovered a way to cause liquid crystals to relax to their natural state faster. The result, the team explains in their paper published in Physical Review Letters, ...
(Phys.org) —Miguel A. Lerma a mathematician at Northwestern University has uploaded a paper to the preprint server arXiv, in which he describes the design of an event cloaking device that doesn't require the use of metamaterials. ...
