A physical effect known as superinjection underlies modern light-emitting diodes (LEDs) and lasers. For decades this effect was believed to occur only in semiconductor heterostructures—that is, structures composed of two ...
Electronics & Semiconductors
Apr 23, 2019
0
130
The discovery that free electrons can move asymmetrically provides a deeper understanding of one of the basic processes in physics: the photoelectric effect. It was first described by Albert Einstein and explains how high ...
Optics & Photonics
Oct 1, 2019
0
1139
(Phys.org) —Throughout the '70s, '80s and '90s, transistor performance continually increased according to some simple scaling rules. These rules postulate that transistor size and supply voltage should decrease as power ...
The guardians of the world's most important standards of weights and measures have turned to the weird universe of quantum physics to try to resolve a dilemma.
General Physics
Nov 6, 2011
8
0
Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers from Empa and ETH Zurich, in collaboration with partners from Peking University, the University of Warwick and the Max Planck ...
Nanomaterials
Aug 15, 2023
0
95
Using a new computational method, an international collaboration has succeeded for the first time in systematically investigating magnetic quantum effects in the well-known 3-D pyrochlore Heisenberg model. The surprising ...
Quantum Physics
Jan 23, 2019
0
343
The dynamic behavior of electrons in magnetic fields is crucial for understanding physical processes, such as the quantum Hall effect, which are important in many areas of solid state physics, including electrical conductivity. ...
Quantum Physics
Aug 8, 2014
2
1
A theoretical breakthrough in understanding quantum chaos could open new paths into researching quantum information and quantum computing, many-body physics, black holes, and the still-elusive quantum to classical transition.
Quantum Physics
May 26, 2022
3
355
Recent research conducted by scientists from the University of Granada sheds light on the nature of dark matter, one of the most important mysteries in physics. As indirect evidence provided by its gravitational effects, ...
General Physics
Mar 3, 2015
41
151
In a sub-basement deep below the Laboratory for Integrated Science and Engineering at Harvard University, Mikhail Kats gets dressed. Mesh shoe covers, a face mask, a hair net, a pale gray jumpsuit, knee-high fabric boots, ...
Nanophysics
Dec 22, 2014
0
0
