In solar cells, about two third of the energy of sunlight is lost. Half of this loss is due to a process called 'hot carrier cooling' where high energy photons lose their excess energy in the form of heat before being converted ...
Materials Science
Apr 23, 2021
0
423
In the first study of its kind, published by Nature Communications, an international team of researchers led by the University of Surrey has proven the existence of the fabled multi-photon Fano effect in an experiment.
Optics & Photonics
Feb 10, 2021
0
131
Light-by-light scattering is a rare phenomenon in which two photons—particles of light—interact, producing another pair of photons. Direct observation of this process at high energy had proven elusive for decades, until ...
General Physics
Jun 19, 2020
0
44
When the American physicist Arthur Compton discovered that light waves behave like particles in 1922, and could knock electrons out of atoms during an impact experiment, it was a milestone for quantum mechanics. Five years ...
Quantum Physics
Apr 15, 2020
1
1722
Imagine a wire with a thickness roughly one-hundred thousand times smaller than a human hair and only visible with the world's most powerful microscopes. They can come in many varieties, including semiconductors, insulators ...
Superconductivity
Mar 3, 2020
2
1014
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 ...
Argonne develops novel method to more clearly see complex materials physics in difficult-to-access environments.
Materials Science
Jul 18, 2019
0
225
Light-by-light scattering is a very rare phenomenon in which two photons interact, producing another pair of photons. This process was among the earliest predictions of quantum electrodynamics (QED), the quantum theory of ...
General Physics
Mar 20, 2019
0
856
During the formation of a black hole, a bright burst of very energetic light in the form of gamma rays is produced, these events are called gamma ray bursts. The physics behind this phenomenon includes many of the least understood ...
Astronomy
Jan 14, 2019
4
164
Blazars are galaxies whose central, supermassive black holes are accreting material from surrounding regions. Although black hole accretion happens in many galaxies and situations, in the case of a blazar the infalling material ...
Astronomy
Jun 6, 2016
1
57
