Hydrogel Speakers Stretch Across Screens to Play Music An - TopicsExpress



          

Hydrogel Speakers Stretch Across Screens to Play Music An invisible, music-playing and sound-canceling gel may soon coat your smartphone, laptop screen, television, and even your car windows.This stretchy hydrogel speaker, a prototype invented by a team of Harvard University scientists, was created by combining saltwater and polymers that are then hooked up to electrodes. A thin rubber sheet is sandwiched between two layers of gel, and ions carry a current in the gel that vibrates the rubber to make sound waves. youtube/watch?v=98EUsuXi0Sw
Posted on: Fri, 20 Sep 2013 01:04:57 +0000

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