News tagged with electrical circuits

Ultra-fast photodetector and terahertz generator

Photodetectors made from graphene can process and conduct light signals as well as electric signals extremely fast. Within picoseconds the optical stimulation of graphene generates a photocurrent. Until now, ...

Jan 31, 2012
4.9 / 5 (10) 0

First molybdenite microchip

(PhysOrg.com) -- Molybdenite, a new and very promising material, can surpass the physical limits of silicon. EPFL scientists have proven this by making the first molybdenite microchip, with smaller and more ...

Dec 05, 2011
4.8 / 5 (25) 8

Shine a light instead of changing the battery

(PhysOrg.com) -- Pacemakers and other implanted medical devices require electric current to operate. Changing the battery requires an additional operation, which is an added stress on the patient. A Japanese team led by Eijiro ...

Dec 01, 2011
5 / 5 (5) 0

Mimicking cells with transistors

As the world has become less analog and more digital -- as tape decks and TV antennas have given way to MP3 players and streaming video -- electrical engineers’ habits of thought have changed, too. In ...

Sep 28, 2011
5 / 5 (6) 2