Self-detecting gate-tunable nanotube paddle resonators

Details Self-detecting gate-tunable nanotube paddle resonators Self-detecting gate-tunable nanotube paddle resonators

2008-09-02

arxiv.org/abs/0809.0372v1

Applied Physics Letters 93, 111909 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures, 1 supplementary information. This article has been accepted by Appl. Phys. Lett. After it is published, it

Scientific paper

10.1063/1.2985859

We have fabricated suspended metal paddle resonators with carbon nanotubes functioning as self-detecting torsional springs. We observe gate-tunable resonances, that either tune to higher or to lower frequencies when increasing the dc voltage on the back-gate. We attribute the former modes to flexural vibrations of the paddle resonator, while the latter ones are identified as torsional vibrations. Compared to top-down silicon fabricated paddle resonators, nanotube springs have smaller torsional spring constants and provide a larger frequency tunability.

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