A high quality factor carbon nanotube mechanical resonator at 39 GHz

Laird, Edward A. and Pei, Fei and Tang, Wei and Steele, Gary A. and Kouwenhoven, Leo P. (2012) A high quality factor carbon nanotube mechanical resonator at 39 GHz. Nano Letters, 12 (1). pp. 193-197. ISSN 1530-6984

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Abstract

We measure the mechanical resonances of an as-grown suspended carbon nanotube, detected via electrical mixing in the device. A sequence of modes extending to 39 GHz is observed with a quality factor of 35 000 in the highest mode. This unprecedentedly high combination corresponds to a thermal excited state probability below 10–8 and a relaxation time of 140 ns with microsecond relaxation times for lower modes. The effect of electron tunneling on the mechanical resonance is found to depend on frequency as the tunneling time becomes comparable to the vibration period.

Item Type:

Journal Article

Journal or Publication Title:

Nano Letters

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/1500/1502

Subjects:

?? nanomechanicscarbon nanotubeselectromechanical devicesquantum dotsbioengineeringgeneral materials sciencegeneral chemistrymechanical engineeringcondensed matter physicsmaterials science(all)chemistry(all) ??

Departments:

Faculty of Science and Technology > Physics

ID Code:

124378

Deposited By:

ep_importer_pure

Deposited On:

04 Apr 2018 12:54

Refereed?:

Yes

Published?:

Published

Last Modified:

16 Jul 2024 10:41

URI:

https://eprints.lancs.ac.uk/id/eprint/124378