A new technique developed by a team at MIT can map the complete electronic band structure of materials at high resolution. This capability is usually exclusive to large synchrotron facilities, but now it is available as a ...
Optics & Photonics
Aug 20, 2019
0
56
An international team of astronomers has witnessed a rare dynamic event foreshadowing the death of a red giant star for the first time – a discovery that reinforces predictions about our Sun's ultimate demise.
Astronomy
Jul 25, 2019
0
261
During the conversion of light into electricity, such as in solar cells, a large part of the input light energy is lost. This is due to the behaviour of electrons inside of materials. If light hits a material, it stimulates ...
Optics & Photonics
Dec 21, 2018
0
267
Phonons are discrete units of vibrational energy predicted by quantum mechanics that correspond to collective oscillations of atoms inside a molecule or a crystal. When such vibrations are produced by light interacting with ...
Quantum Physics
Jun 5, 2018
1
581
The energy density contained in the center of a star is higher than we can imagine - many billions of atmospheres, compared with the 1 atmosphere of pressure we live with here on Earth's surface.
General Physics
Jan 11, 2017
2
132
In an algae-eat-algae world, it's the single-celled photosynthetic organisms at the top (layer of the ocean) that absorb the most sunlight. Underneath, in the sublayers, are cryptophyte algae that must compete for photons ...
Biochemistry
Dec 8, 2016
2
11
In an electron microscope, electrons are emitted by pointy metal tips, so they can be steered and controlled with high precision. Recently, such metal tips have also been used as high precision electron sources for generating ...
Optics & Photonics
Nov 15, 2016
2
2313
Researchers at Washington University in St. Louis have found a way to give photons, or light packets, their marching orders.
Optics & Photonics
Jun 17, 2016
0
666
A Rice University laboratory has improved upon its ability to determine molecular structures in three dimensions in ways that challenge long-used standards.
General Physics
Aug 15, 2013
0
0
(Phys.org)—The way electrons move within and between molecules, transferring energy as they go, plays an important role in many chemical and biological processes, such as the conversion of sunlight to energy in photosynthesis ...
General Physics
Jan 31, 2013
0
0
