Semiconductors convert energy from photons (light) into an electron current. However, some photons carry too much energy for the material to absorb. These photons produce "hot electrons," and the excess energy of these electrons ...
General Physics
Nov 15, 2019
0
367
When a current is applied to a thin layer of tungsten diselenide, it begins to glow in a highly unusual fashion. In addition to ordinary light, which other semiconductor materials can emit, tungsten diselenide also produces ...
Quantum Physics
Oct 16, 2019
0
105
When a guitar string is plucked, it vibrates as any vibrating object would, rising and falling like a wave, as the laws of classical physics predict. But under the laws of quantum mechanics, which describe the way physics ...
Quantum Physics
Oct 7, 2019
4
1571
Researchers have developed a tiny nanolaser that can function inside of living tissues without harming them.
Optics & Photonics
Sep 23, 2019
0
183
A team of researchers at Bar-Ilan University has found a way to use correlated photons to make sharper X-ray images. In their paper published in the journal Physical Review Letters, the group describes their process and suggest ...
An efficient light-matter interface might constitute the foundation of quantum communication. However, certain structures that are formed during the growth process interfere with the signal.
Quantum Physics
Aug 23, 2019
0
228
Gamma-ray bursts, short and intense flashes of energetic radiation coming from outer space, are the brightest explosions in the universe. As gamma rays are blocked by the atmosphere, the bursts were discovered accidentally ...
Astronomy
Aug 1, 2019
73
221
Argonne develops novel method to more clearly see complex materials physics in difficult-to-access environments.
Materials Science
Jul 18, 2019
0
225
The ever-more-humble carbon nanotube may be just the device to make solar panels—and anything else that loses energy through heat—far more efficient.
Nanophysics
Jul 12, 2019
4
2135
A team of scientists, led by the University of Bristol, have discovered a new method that could be used to build quantum sensors with ultra-high precision.
Quantum Physics
Jul 10, 2019
0
1682
