Usually, the electrical resistance of a material depends very much on its physical dimensions and fundamental properties. Under special circumstances, however, this resistance can adopt a fixed value that is independent of ...
Nanophysics
Oct 6, 2021
0
1056
On April 8, 1911, Dutch physicist Heike Kamerlingh Onnes scribbled in pencil an almost unintelligible note into a kitchen notebook: "near enough null."
Superconductivity
Oct 4, 2023
0
78
Waste heat is all around you. On a small scale, if your phone or laptop feels warm, that's because some of the energy powering the device is being transformed into unwanted heat.
Superconductivity
Jun 3, 2020
1
40
Mott insulators are a peculiar class of materials with structures that should theoretically conduct electricity, but that are instead insulators. These materials contain strongly correlated electrons, which can generate highly ...
Researchers at Tokyo Institute of Technology (Tokyo Tech) have discovered that a catalyst of calcium amide with a small amount of added barium (Ba-Ca(NH2)2) with ruthenium nanoparticles immobilized onto it can synthesize ...
Materials Science
Feb 8, 2018
0
16
A fascinating substance with unique properties, ice has intrigued humans since time immemorial. Unlike most other materials, ice at very low temperature is not as ordered as it could be. A collaboration between the Scuola ...
General Physics
Dec 29, 2020
0
615
At very low temperatures and under strong magnetic fields, thin films of semiconducting materials can display a phenomenon known as the quantum Hall (QH) effect, which can allow electrons to flow with no energy loss. In a ...
General Physics
Oct 17, 2014
1
0
In 2013 James Hone, Wang Fong-Jen Professor of Mechanical Engineering at Columbia Engineering, and colleagues at Columbia demonstrated that they could dramatically improve the performance of graphene—highly conducting two-dimensional ...
Nanomaterials
Apr 27, 2015
0
1672
A silicon optical switch newly developed at Sandia National Laboratories is the first to transmit up to 10 gigabits per second of data at temperatures just a few degrees above absolute zero. The device could enable data transmission ...
Optics & Photonics
Mar 16, 2017
0
709
Through an experiment designed to create a super-cold state of water, scientists at the Department of Energy's Oak Ridge National Laboratory used neutron scattering to discover a pathway to the unexpected formation of dense, ...
Condensed Matter
May 22, 2019
0
778
