Nonlinear damping in mechanical resonators made from carbon nanotubes and graphene

A. Eichler; J. Moser; J. Chaste; M. Zdrojek; A. Bachtold; I. Wilson-Rae

doi:10.1038/nnano.2011.71

Nonlinear damping in mechanical resonators made from carbon nanotubes and graphene

A. Eichler, J. Moser, J. Chaste, M. Zdrojek, A. Bachtold, I. Wilson-Rae

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The theory of damping is discussed in Newton's Principia and has been tested in objects as diverse as the Foucault pendulum, the mirrors in gravitational-wave detectors and submicrometre mechanical resonators. In general, the damping observed in these systems can be described by a linear damping force. Advances in nanofabrication mean that it is now possible to explore damping in systems with one or more atomic-scale dimensions. Here we study the damping of mechanical resonators based on carbon nanotubes and graphene sheets . The damping is found to strongly depend on the amplitude of motion, and can be described by a nonlinear rather than a linear damping force. We exploit the nonlinear nature of damping in these systems to improve the figures of merit for both nanotube and graphene resonators. For instance, we achieve a quality factor of 100,000 for a graphene resonator.

Original language	English
Pages (from-to)	339-342
Number of pages	4
Journal	Nature Nanotechnology
Volume	6
Issue number	6
DOIs	https://doi.org/10.1038/nnano.2011.71
Publication status	Published - 1 Jun 2011

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AU - Moser, J.

AU - Chaste, J.

AU - Zdrojek, M.

AU - Bachtold, A.

AU - Wilson-Rae, I.

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Nonlinear damping in mechanical resonators made from carbon nanotubes and graphene

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