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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Can personal devices interfere with hospital care?

Thousands of patients die each year in hospitals across North America due to medical errors that could be prevented were doctors and nurses provided with instant access to patient records via wireless technology. Cue the ...

dateJun 16, 2015 in Engineering
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