Vibrations of atoms in a crystal of the semiconductor gallium arsenide (GaAs) are impulsively shifted to a higher frequency by an optically excited electric current. The related change in the spatial distribution of charge ...
Quantum Physics
Jul 14, 2020
0
188
Microscopes of visible light allow scientists to see tiny objects such living cells. Yet, they cannot discern how electrons are distributed among atoms in solids. Now, researchers with Prof. Eleftherios Goulielmakis of the ...
Optics & Photonics
Jul 01, 2020
0
210
Plasmas are strongly associated with thermonuclear reactions inside stars such as the sun, but in modern society, plasmas have found application in lithographic processes and decontamination techniques. High-temperature plasmas, ...
Plasma Physics
Jun 24, 2020
0
4
With the increasing demand for affordable and sustainable energy, the ongoing development of batteries with a high energy density is vital. Lithium-sulfur batteries have attracted the attention of academic researchers and ...
Materials Science
Jun 16, 2020
0
34
A team at the DIII-D National Fusion Facility led by a William & Mary physicist has made a significant advancement in physics understanding that represents a key step toward practical fusion energy.
Plasma Physics
May 21, 2020
6
198
Laser-induced ionization in matter—gas, cluster, liquid, and solid—occurs when a laser pulse with sufficient intensity is focused into a target material, creating electrons and ions through nonlinear processes of laser-matter ...
Optics & Photonics
Apr 27, 2020
0
8
A team of researchers from the Institute for Quantum Electronics, ETH Zürich, the Max Planck Institute of Quantum Optics and the Munich Center for Quantum Science and Technology has found a way to boost polaritonic nonlinearity. ...
For years physicists have been trying to decipher the electronic details of high-temperature superconductors. These materials could revolutionize energy transmission and electronics because of their ability to carry electric ...
Superconductivity
Apr 01, 2020
1
411
Carbon dioxide (CO2) emission has become a global problem. Efficient conversion of CO2 into value-added liquid fuels is one method to fix CO2, and it can alleviate the growing shortage of non-renewable fossil fuels at the ...
Materials Science
Mar 30, 2020
0
14
Optical gain is a prerequisite for signal amplification in an optical amplifier or laser. It typically requires high levels of current injection in conventional semiconductors. By exploring an intricate balance and conversion ...
Optics & Photonics
Mar 20, 2020
0
3
