USC nanotube device uses ’Stochastic Resonance’ to enhance subthreshold signals
Stochastic resonant image of nanotube, with progressively more noise added
Paradoxical as it seems, a team of University of Southern California researchers has built a signal detector that only works when noise is added.
The device uses a novel kind of transistor made from carbon nanotubes. The principal investigator, Professor Bart Kosko of the USC department of electrical engineering, claims that the series of experiments reported in the December issue of the American Chemical Society’s Nano Letters, says the result is significant both in the development of electronic applications for nanotubes, and in the development of applications for "stochastic resonance," the counterintuitive use of noise to amplify signals.
Bob Calverley | EurekAlert!
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