News tagged with electromagnetism

Graphene sheets enable ultrasound transmitters

University of California, Berkeley, physicists have used graphene to build lightweight ultrasonic loudspeakers and microphones, enabling people to mimic bats or dolphins' ability to use sound to communicate and gauge the ...

dateJul 07, 2015 in Nanomaterials
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An electrical switch for magnetism (w/ Video)

Researchers at MIT have developed a new way of controlling the motion of magnetic domains—the key technology in magnetic memory systems, such as a computer's hard disk. The new approach requires little power to write and ...

dateMay 30, 2013 in Nanophysics
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