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Putting a damper on nanoresonators

Nature Nanotechnology volume 6, pages 331–332 (2011)Cite this article

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The observation of nonlinear damping in resonators made from carbon nanotubes and graphene should lead to an improved understanding of energy losses in nanomechanical devices.

The harmonic oscillator holds a special place in the history of science and technology, having an important role in the development of both classical and quantum physics. Examples include Galileo's pendulum, resonant electrical circuits and molecular vibrations. In micro and nanomechanical systems, the prototypical harmonic oscillator is a mechanical resonator — a beam of material that oscillates in response to an externally applied force. In an ideal world, or at least a world in which there is no dissipation of energy, the oscillations would continue indefinitely after energy had been supplied to the resonator.

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Figure 1: Artist's impression of a graphene resonator between two metal electrodes.

BACHTOLD GROUP / ICN

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  1. J. Scott Bunch is in the Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, USA.

    J. Scott Bunch

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  1. J. Scott Bunch
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Correspondence to J. Scott Bunch.

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Bunch, J. Putting a damper on nanoresonators. Nature Nanotech 6, 331–332 (2011). https://doi.org/10.1038/nnano.2011.84

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  • DOI: https://doi.org/10.1038/nnano.2011.84

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