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Observation of nonlinear dissipation in piezoresistive diamond nanomechanical resonators by heterodyne down-mixing

Imboden, Matthias, Williams, Oliver Aneurin and Mohanty, Pritiraj 2013. Observation of nonlinear dissipation in piezoresistive diamond nanomechanical resonators by heterodyne down-mixing. Nano Letters 13 (9) , pp. 4014-4019. 10.1021/nl401978p

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Abstract

We report the observation of nonlinear dissipation in diamond nanomechanical resonators measured by an ultrasensitive heterodyne down-mixing piezoresistive detection technique. The combination of a hybrid structure as well as symmetry breaking clamps enables sensitive piezoresistive detection of multiple orthogonal modes in a diamond resonator over a wide frequency and temperature range. Using this detection method, we observe the transition from purely linear dissipation at room temperature to strongly nonlinear dissipation at cryogenic temperatures. At high drive powers and below liquid nitrogen temperatures, the resonant structure dynamics follows the Pol-Duffing equation of motion. Instead of using the broadening of the full width at half-maximum, we propose a nonlinear dissipation backbone curve as a method to characterize the strength of nonlinear dissipation in devices with a nonlinear spring constant.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Nanoelectro-mechanical systems; nonlinear dissipation; piezoresistive detection; nanomechanical resonator
Publisher: American Chemical Society
ISSN: 1530-6984
Funders: EPSRC
Last Modified: 04 Jun 2017 05:36
URI: http://orca.cf.ac.uk/id/eprint/52418

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