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Science 6 April 2007:
Vol. 316. no. 5821, pp. 95 - 99
DOI: 10.1126/science.1137307
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Reports

Synchronized Oscillation in Coupled Nanomechanical Oscillators

Seung-Bo Shim,* Matthias Imboden, Pritiraj Mohanty{dagger}

We report measurements of synchronization in two nanomechanical beam oscillators coupled by a mechanical element. We charted multiple regions of frequency entrainment or synchronization by their corresponding Arnold's tongue diagrams as the oscillator was driven at subharmonic and rational commensurate frequencies. Demonstration of multiple synchronized regions could be fundamentally important to neurocomputing with mechanical oscillator networks and nanomechanical signal processing for microwave communication.

Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA.

* Present address: Center for Strongly Correlated Materials Research and School of Physics and Astronomy, Seoul National University, Seoul, South Korea.

{dagger} To whom correspondence should be addressed. E-mail: mohanty{at}physics.bu.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)