News tagged with electrical current

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Electric bugs used to detect water pollution

(Phys.org) —Scientists from our Department of Chemical Engineering have developed a low-cost device that could be used in developing countries to monitor the quality of drinking water in real time without ...

Aug 11, 2014
5 / 5 (2) 0

A new twist for quantum systems

Physicists at ETH Zurich have developed a method for precisely controlling quantum systems by exploiting a trick that helps cats to land on their feet and motorists to fit their cars into parking spots. In ...

Apr 17, 2013
4 / 5 (5) 7 | with audio podcast

Blocking infinity in a topological insulator

(Phys.org)—In bulk, topological insulators (TIs) are good insulators, but on their surface they act as metals, with a twist: the spin and direction of electrons moving across the surface of a TI are locked ...

Feb 08, 2013
4.8 / 5 (4) 7 | with audio podcast

Harvesting energy from devices

If there's one thing nearly all modern technology has in common, it's heat. Whether it's your car, computer, television, or even refrigerator, they all generate large amounts of heat. And nearly all of it ...

Jul 04, 2014
4.2 / 5 (13) 0

Light tsunami in a superconductor

Superconductors are materials which conduct electric currents without any resistance. At the Helmholtz-Zentrum Dresden-Rossendorf, an international research team headed by Professor Andrea Cavalleri from ...

Apr 03, 2013
5 / 5 (7) 2 | with audio podcast

Push-Button Logic on the Nanoscale

(PhysOrg.com) -- Circuits that can perform logic operations at the push of a button are a dime-a-dozen these days, but a breakthrough by researchers in the USA has meant they can be smaller and simpler than ...

Aug 05, 2010
5 / 5 (10) 3 | with audio podcast