Category Technology/Electronics

In a new concept for battery cathodes, nanometer-scale particles made of lithium and oxygen compounds (depicted in red and white) are embedded in a sponge-like lattice (yellow) of cobalt oxide, which keeps them stable. The researchers propose that the material could be packaged in batteries that are very similar to conventional sealed batteries yet provide much more energy for their weight. Credit: Courtesy of the researchers

New chemistry could overcome key drawbacks of lithium-air batteries. Lithium-air batteries are considered highly promising technologies for electric cars and portable electronic devices because of their potential for delivering a high energy output in proportion to their weight...

This image shows high-energy x-ray diffraction patterns of the reciprocal lattice plane (H?K?0). The CDW superstructure peaks are marked by blue arrows (logarithmic color scale). Credit: U.S. Department of Energy, Ames Laboratory

Researchers at DOE Ames Lab have discovered an unusual property of purple bronze that may point to new ways to achieve high temperature superconductivity. While studying purple bronze, a molybdenum oxide, researchers discovered an unconventional charge density wave on its surface. A charge density wave (CDW) is a state of matter where electrons bunch together in a repeating pattern, like a standing wave of surface of water. Superconductivity and charge density waves share a common origin, often co-exist, and can compete for dominance in certain materials.

Conventi...

BLOODHOUND SSC during construction at the Bloodhound Technical Centre, Avonmouth, summer 2015. Credit: Author provided

It’s a staggering feat, a car faster than the speed of sound. On Oct 15 1997, Andy Green travelled across the Black Rock Desert, Nevada, in the Thrust SSC at 763.035 mph, or Mach 1.02. Two decades on, that record remains unchallenged. Until now. Back in 2007, a small team of British engineers headed up by Richard Noble and Andy Green decided to have a pop at the world land speed record once more. This time, their sights were set on 1,000mph...

Scientists at EPFL and ETHZ have developed a new method for building microrobots that could be used in the body to deliver drugs and perform other medical operations. Credit: Selman Sakar

The robots enter the human body, where they can deliver drugs at specific locations or perform precise operations like clearing clogged-up arteries. By replacing invasive, often complicated surgery, they could optimize medicine. EPFL and ETHZ scientists developed a simple and versatile method for building such bio-inspired robots and equipping them with advanced features. They also created a platform for testing several robot designs and studying different modes of locomotion. Their work produced complex reconfigurable microrobots that can be manufactured with high throughput...