Archive of stories pre April 2007 | US engineers in Florida believe they've solved the problem of safely storing invisible, odorless and highly explosive hydrogen. The storage problem has been viewed as a possible safety problem for hydrogen-powered cars, filling stations and other aspects of the so-called hydrogen economy likely in the future.
A team of more than a dozen University of Florida engineering faculty members and graduate students have developed a tiny, inexpensive sensor that can detect hydrogen leaks and sound an alarm by wireless communication.
The device has the ability to draw its power from a tiny internal source that harvests energy from small vibrations. That means future versions could operate continuously without batteries or maintenance when affixed to cars, pumps or any other machine that produces a slight vibration.
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