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This Tuesday at the Materials Research Society spring meeting in San Francisco I sat down with Zhong Lin Wang, director of the center for nanostructure characterization at Georgia Tech. We featured Wang's work on self-powered nanosensors in our "10 Emerging Technologies" issue last year. The payoff from this concept would be huge: nanoscale sensors are exquisitely sensitive, very frugal with power, and, of course, tiny.

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