Photons with energy higher than the band gap of the semiconductor absorbing them give rise to what are known as hot electrons. The extra energy in respect to the band gap is lost very fast, as it is converted into heat and ...
Condensed Matter
Jan 16, 2018
2
63
Solar and renewable energy is getting hot, thanks to nanoscientists—those who work with materials smaller than the width of a human hair—at the U.S. Department of Energy's (DOE) Argonne National Laboratory who have discovered ...
General Physics
Dec 21, 2017
0
127
Oil and water do not mix, but a KAUST team has exploited the distinct interfaces between these substances to make plasma generation in liquids more efficient. This approach holds promise for high-yield synthesis of nanomaterials ...
Plasma Physics
Dec 12, 2017
0
6
Hydrogen gas, an important synthetic feedstock, is poised to play a key role in renewable energy technology; however, its credentials are undermined because most is currently sourced from fossil fuels, such as natural gas. ...
Materials Science
Aug 29, 2017
1
36
Encircling the Earth, within its magnetosphere, are two concentric, doughnut-shaped radiation belts known as the Van Allen belts. The Van Allen belts swell and recede in response to incoming energy from the sun, sometimes ...
Plasma Physics
Jun 20, 2017
0
36
For the first time, engineers and scientists at Caltech have been able to directly observe the ultrafast motion of electrons immediately after they are excited with a laser—and found that these electrons diffuse into their ...
General Physics
Jun 16, 2017
0
336
The emerging field of plasmonics could bring advances in chemical manufacturing, usher in new clean and sustainable technologies and desalination systems to avert a future global water crisis.
General Physics
Jun 2, 2017
5
299
If they're quick about it, "hot" electrons excited in a plasmonic metal can tunnel their way across a nanoscale gap to a neighboring metal. Rice University scientists said the cool part is what happens in the gap.
Nanophysics
May 8, 2017
0
16
(Phys.org)—Illustrating the unusual way things work on the nanoscale, scientists have designed a new nanoelectromechanical system (NEMS) that produces mechanical motion due to the interactions between electrons—yet unlike ...
Scientists have, for the first time, identified a method of visualising the quantum behaviour of electrons on a surface. The findings present a promising step forward towards being able to manipulate and control the behaviour ...
Quantum Physics
Sep 28, 2016
2
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