Category Technology/Electronics

Stanford engineers are developing new memory chips, based on materials other than silicon, to provide more energy-efficient ways to store data as digital zeros and ones. Credit: iStock / matejmo

Scientists often discover interesting things without completely understanding how they work. That has been the case with an experimental memory technology in which temperature and voltage work together to create the conditions for data storage. But precisely how was unknown. But when a Stanford team found a way to untangle the chip’s energy and heat requirements, their findings revealed a pleasant surprise: The process may be more energy efficient than was previously supposed. That’s good news for next-generation mobile devices whose batteries would last longer powering lower energy chips.

The new ...

The tiny YbMgGaO4 crystal, here perched on a stand for testing, appears to be the next extremely rare material to produce an equally as rare observable quantum spin liquid. Credit: Georgia Tech / Martin Mourigal

Inside a new exotic crystal, physicist Martin Mourigal has observed strong indications of “spooky” action, and lots of it. The results of his experiments, if corroborated over time, would mean that the type of crystal is a rare new material that can produce an observable quantum spin liquid. Currently, only a small handful of materials are believed to possibly have these properties. This new crystal was synthesized for the first time only a year ago.

A “liquid” found inside a solid object may sound confusing to many people...

Schematic illustration of polypyrrole-manganese dioxide (PPy-MnO2) coaxial nanotubes to accommodate sulfur for high-performance Li–S battery. Comparison of cyclic performance of S/PPy-MnO2 and S/PPy at 0.2C. (Reprinted with permission by American Chemical Society) (click on image to enlarge) Read more: Improving the performance of lithium-sulfur batteries with coaxial nanotubes

University of Texas team has found that using coaxial nanotubes can improve the performance of lithium-sulfur batteries (Li-S).They used Polypyrrole-MnO2 coaxial nanotubes to overcome obstacles to using Li-S batteries in commercial products. Prior research has shown that Li-S batteries would offer users of electronics more energy storage—as much as 5X that of lithium-ion batteries...

Electrostatic levitation. The UV source causes the metal to be ionized, giving it an electric charge and causing levitation in between the electrodes. The laser melts the metal. The new project involves electromagnetic in stead of electrostatic levitation. Credit: Image courtesy of University of Twente

Crystals that don’t experience mechanical stress during growth, will be of superior quality. Levitate the liquid metal, is the idea behind the new project ‘Perfecting metal crystals’. UT scientists want to grow crystals from a metal melt that is levitated by an electromagnetic field, under vacuum conditions. The liquid is no longer kept within a container and isn’t mechanically stressed by the walls of this container...