Category Physics

They played a key role in demonstrating the unusual behavior of carbon: Tim Schleif (left) and Joel Mieres Perez (right). Credit: © RUB, Marquard

Chemists at Ruhr-Universität Bochum have found evidence that carbon atoms cannot only behave like particles but also like waves. This quantum-mechanical property is well-known for light particles such as electrons or hydrogen atoms. However, researchers have only rarely observed the wave-particle duality for heavy atoms, such as carbon. “Our result is one of few examples showing that carbon atoms can display quantum effects,” says Sander. Specifically, carbon atoms can tunnel. They thus overcome an energetic barrier, although they do not actually possess enough energy to do that.

Wolfram Sander explains the paradox: “It’s as though a tiger has ...

Bioinspired supramolecular fibers drawn from a multiphase self-assembled hydrogel. Proceedings of the National Academy of Sciences, 2017; 201705380 DOI: 10.1073/pnas.1705380114

A team of architects and chemists from the University of Cambridge has designed super-stretchy and strong fibres which are almost entirely composed of water, and could be used to make textiles, sensors and other materials. The fibres, which resemble miniature bungee cords as they can absorb large amounts of energy, are sustainable, non-toxic and can be made at room temperature...

The watchstrap contains piezoresistive fibers produced on a 3D printer. The wrist movements are transmitted to steer the drone. Credit: Image courtesy of Empa

Moving things with a wave of the hand: thanks to Empa technology this dream could soon become real. A sensor made of electroconductive piezo-resistive fibers integrated in a wristband measures wrist movements and converts them into electrical signals, which can be read by a terminal device and interpreted. This can be used to steer drones or other electronic devices without a remote control. A wave to the left: the drone moves to the left. A wave to the right: the drone turns right. Clench your hand into a fist and it lands gently on the table.

Although motion sensors are nothing new, until now movements were primarily recorded using...

Outline of the microsatellite SOCRATES and the NICT optical ground station located in Koganei city. a. Picture of the lasercom terminal SOTA. b. Polarization states that encode the bits of the transmitted information. c. Optical ground station. d. Configuration diagram of the quantum receiver.

Big step toward building a truly-secure global communication network. The National Institute of Information and Communications Technology (NICT, President: Hideyuki Tokuda, Ph.D.) developed the world’s smallest and lightest quantum-communication transmitter (SOTA) onboard the microsatellite SOCRATES...