Adieu, Le Grand K: The kilogram to be redefined for the first time in 130 years
In a subterranean vault in a suburb of Paris lies a small, rarely seen metal cylinder known as Le Grand K.
In a subterranean vault in a suburb of Paris lies a small, rarely seen metal cylinder known as Le Grand K.
General Physics
May 20, 2019
17
1860
A new type of light-emitting diode has been developed at TU Wien. Light is produced from the radiative decay of exciton complexes in layers of just a few atoms thickness.
Nanophysics
Apr 15, 2019
0
194
The enhanced power of the new measuring technique to characterize materials at scales much smaller than any current technologies will accelerate the discovery and investigation of 2-D, micro- and nanoscale materials.
General Physics
Apr 9, 2019
0
337
With a little physics ingenuity, scientists have designed a way to redistribute electricity on a small scale, potentially opening new avenues of research into more energy-efficient computing.
General Physics
Apr 9, 2019
0
440
A team of scientists including researchers at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and SLAC National Accelerator Laboratory have identified the causes of degradation in a cathode material for ...
Materials Science
Mar 15, 2019
0
343
For many years, scientists have been looking for an effective and efficient way to turn water into energy-storing fuels using solar- and wind-powered electricity, likely by splitting water into hydrogen and oxygen. To do ...
Materials Science
Feb 8, 2019
0
36
Every standard cable, every wire, every electronic device has some electric resistance. There are, however, superconducting materials with the ability to conduct electrical current with a resistance of exactly zero – at ...
Superconductivity
Jan 28, 2019
1
104
Many wearable biosensors, data transmitters and similar tech advances for personalized health monitoring have now been "creatively miniaturized," says materials chemist Trisha Andrew at the University of Massachusetts Amherst, ...
Materials Science
Jan 22, 2019
0
177
For the first time, researchers have performed logic operations with a chemical device using electric fields and ultraviolet light. The device and the pioneering methods open up research possibilities, including low-power, ...
Materials Science
Jan 16, 2019
0
106
Leiden physicist Milan Allan and his group have discovered an apparent paradox within a material that has zero electrical resistance. They report trapped charges, although charges should, in theory, keep flowing in the absence ...
Superconductivity
Oct 8, 2018
0
128