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Diffusion-induced bistability of driven nanomechanical resonators

By J. Atalaya, A. Isacsson and M. I. Dykman

Abstract

We study nanomechanical resonators with frequency fluctuations due to diffusion of absorbed particles. The diffusion depends on the vibration amplitude through inertial effect. We find that, if the diffusion coefficient is sufficiently large, the resonator response to periodic driving displays bistability. The lifetime of the coexisting vibrational states scales exponentially with the diffusion coefficient. It also displays a characteristic scaling dependence on the distance to bifurcation points.Comment: 4 pages, 3 figure

Topics: Condensed Matter - Mesoscale and Nanoscale Physics
Year: 2011
DOI identifier: 10.1103/PhysRevLett.106.227202
OAI identifier: oai:arXiv.org:1103.2758
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