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Battery-free Sensor Could Expand Underwater Exploration

News   Aug 21, 2019 | Original story from the Massachusetts Institute of Technology.

 
Battery-free Sensor Could Expand Underwater Exploration

A battery-free underwater “piezoelectric” sensor invented by MIT researchers transmits data by absorbing or reflecting sound waves back to a receiver, where a reflected wave decodes a 1 bit and an absorbed wave decodes a 0 bit — and simultaneously stores energy. Credit: The researchers.

 
 
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