News by Subject Chemistry & Physics

Superconductors' never-ending flow of electrical current could provide new options for energy storage and superefficient electrical transmission and generation. But the signature zero electrical resistance of superconductors is reached only below a certain critical temperature and is very expensive to achieve. Physicists in Serbia believe they've found a way to manipulate superthin, waferlike monolayers of superconductors, thus changing the material's properties to create new artificial materials for future devices.

In addition to Ampere, Kelvin, Mol and Co., the kilogram also is now defined by a natural constant. In concrete terms, this means that the original kilogram, which has been the measure of all things for 130 years, has now served its purpose in Paris. This is made possible by the single crystals grown from the highly enriched isotopic silicon-28 at the Leibniz-Institut für Kristallzüchtung (IKZ).

DGIST announced on May 8 that a polariton nano-laser operating at room temperature was developed by Professor Chang-Hee Cho's team in the Department of Emerging Materials Science, in collaboration with Professor Seong-Ju Park at GIST and Professor Ritesh Agarwal at University of Pennsylvania.

Columbia Engineering researchers report that they have demonstrated a nearly ideal transistor made from a 2D material stack -- with only a two-atom-thick semiconducting layer -- by developing a completely clean and damage-free fabrication process. Their method shows vastly improved performance compared to 2D semiconductors fabricated with a conventional process, and could provide a scalable platform for creating ultra-clean devices in the future.

The invention uses magnets to record computer data which consume virtually zero energy, solving the dilemma of how to create faster data processing speeds without high energy costs. Today's data center servers consume between 2 to 5% of global electricity consumption, producing heat which needs more power to cool the servers. The problem is so acute services in the ocean in an effort to keep them cool and cut costs.

Collaborating scientists at the US Department of Energy's Ames Laboratory, Brookhaven National Laboratory, and Princeton University have discovered a new layered ferromagnetic semiconductor, a rare type of material that holds great promise for next-generation electronic technologies.

An international collaboration involving European, Israeli, and US scientists realize for the first time strong and directionally dependent interactions in quantum liquids of excitons, which contrasts with the spatial isotropy of the coupling between charged particles. This spatial anisotropy affects the way particles arrange themselves in space and opens routes to artificially created exotic states of matter. The results were published in Physical Review X.