16
September 2004
Switched-on nanotubes
Carbon nanotubes are the stiffest structures known and have the electronic properties of a transistor, making them strong candidates for applications in nanoscale electronics. The production of a room-temperature self-detecting nanotube oscillator is an important step towards that goal, and a group from Cornell has now achieved that. They demonstrate the electrical actuation and detection of guitar-string oscillation modes in a nanometre-diameter nanotube string. The resonance frequency can be widely tuned and the devices can be used to transduce very small forces.
A tunable carbon nanotube electromechanical
oscillator
VERA SAZONOVA, YUVAL YAISH, HANDE �ST�NEL, DAVID ROUNDY,
TOM�S A. ARIAS & PAUL L. MCEUEN
Nature 431, 284–287 (2004); doi:10.1038/nature02905
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Nanophysics: Carbon nanotubes tune up
A. N. CLELAND
Electromechanical resonators are components in many technologies. A nanometre-size
version — a resonating carbon nanotube — has now been created
that can be tuned over a range of frequencies.
Nature 431, 251–252 (2004); doi:10.1038/431251a
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