Modal "self-coupling" as a sensitive probe for nanomechanical detection

Defoort, M. and Lulla, K. J. and Blanc, C. and Bourgeois, O. and Collin, E. and Armour, A. D. (2013) Modal "self-coupling" as a sensitive probe for nanomechanical detection. Applied Physics Letters, 103 (1). ISSN 0003-6951

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Abstract

We present a high-sensitivity measurement technique for mechanical nanoresonators. Due to intrinsic nonlinear effects, different flexural modes of a nanobeam can be coupled while driving each of them on resonance. This mode-coupling scheme is dispersive and one mode resonance shifts with respect to the motional amplitude of the other. The same idea can be implemented on a single mode, exciting it with two slightly detuned signals. This two-tone scheme is used here to measure the resonance lineshape of one mode through a frequency shift in the response of the device. The method acts as an amplitude-to- frequency transduction which ultimately suffers only from phase noise of the local oscillator used and of the nanomechanical device itself. We also present a theory which reproduces the data without free parameters.

Item Type: Journal Article
Journal or Publication Title: Applied Physics Letters
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3101
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 84316
Deposited By: ep_importer_pure
Deposited On: 25 Jan 2017 11:34
Refereed?: Yes
Published?: Published
Last Modified: 01 Jan 2020 09:44
URI: https://eprints.lancs.ac.uk/id/eprint/84316

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