(Phys.org)—Researchers have designed an optical lens that exhibits two properties that so far have not been demonstrated together: self-focusing and an optical effect called the Talbot effect that creates repeating patterns ...
(Phys.org)—Researchers have found that a snowflake-like fractal design, in which the same pattern repeats at smaller and smaller scales, can increase graphene's inherently low optical absorption. The results lead to graphene ...
Imagine getting a medical X-ray that comes out blank – as if your bones had vanished. That's what happened when scientists cranked up the intensity of the world's first X-ray laser, at the Department of Energy's SLAC National ...
General Physics
Aug 30, 2016
0
2594
Materials scientists can produce sub-wavelength artificial structures (split rings, honeycomb shapes and many more) to interact with electromagnetic waves so that the propagation of waves can be arbitrarily controlled to ...
Optics & Photonics
Jun 15, 2016
0
10
Experimental physicist Prof. Thomas Zentgraf and his two colleagues from the University of Birmingham, Dr. Guixin Li and Prof. Shuang Zhang, have for the first time proved experimentally the nonlinear rotational Doppler effect ...
General Physics
Mar 24, 2016
5
287
Lining up gold nanoparticles in narrow trenches carved into a gold substrate has enabled A*STAR researchers to greatly enhance an optical effect that doubles the frequency of impinging light1. This approach could help produce ...
Nanophysics
Jan 20, 2016
0
7
The transport of particles is usually induced by applying an external gradient to a system. Water, for example, flows down a slope and electric current is generated by applying a voltage. But already in ancient times another ...
Quantum Physics
Dec 17, 2015
0
34
Telecommunication networks will soon reach the physical limits of current technology and in order to overcome the current bottleneck, they will have to exploit the quantum properties of light. Roberto Morandotti and his INRS ...
Optics & Photonics
Sep 14, 2015
0
28
A group of Russian scientists recently presented their research into the process of laser pulse filamentation—the effect produced when a laser beam propagating in air focuses into a filament. The researchers discovered ...
Optics & Photonics
Jun 1, 2015
0
24
From computers, tablets, and smartphones to cars, homes, and public transportation, our world is more digitally connected every day. The technology required to support the exchange of massive quantities of data is critical. ...
Optics & Photonics
Mar 18, 2015
0
77
