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Carbon Nanotubes as Ultrahigh Quality Factor Mechanical Resonators

Hüttel, Andreas K. ; Steele, Gary A. ; Witkamp, Benoit ; Poot, Menno ; Kouwenhoven, Leo P. ; van der Zant, Herre S. J.


We have observed the transversal vibration mode of suspended carbon nanotubes at millikelvin temperatures by measuring the single-electron tunneling current. The suspended nanotubes are actuated contact-free by the radio frequency electric field of a nearby antenna; the mechanical resonance is detected in the time-averaged current through the nanotube. Sharp, gate-tunable resonances due to the ...


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