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Analytical Chemistry

Tuning In With A Nanotube

Carbon nanotube is employed as an AM radio demodulator

by Bethany Halford
October 24, 2007
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Most Popular in Analytical Chemistry

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The UC Irvine team grew nanotubes on high-resistivity silicon and then grafted palladium electrodes onto the wafer using optical lithography. For the demodulator, the researchers selected devices in which a lone nanotube bridges the gap between electrodes. They then incorporated the nanotube demodulator into an AM radio receiver.

Video

Launch Video

Using an iPod and an AM signal generator as their broadcasting system, Burke and Rutherglen showed they could wirelessly transmit music to the nanotube receiver system while maintaining high audio quality.

The demodulator isn???t limited to AM radio, Burke tells C&EN; the nanotube device could work with other broadcasting systems, such as FM radio or cellular phone signals.

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