Phys. Rev. Lett. 94, 030402 (2005) [4 pages]

Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators

Abstract

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Alexei Gaidarzhy^1,2, Guiti Zolfagharkhani¹, Robert L. Badzey¹, and Pritiraj Mohanty¹
¹Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
²Aerospace and Mechanical Engineering, Boston University, 110 Cummington Street, Boston, Massachusetts 02215, USA

Received 7 July 2004; revised 18 October 2004; published 25 January 2005

We report the observation of discrete displacement of nanomechanical oscillators with gigahertz-range resonance frequencies at millikelvin temperatures. The oscillators are nanomachined single-crystal structures of silicon, designed to provide two distinct sets of coupled elements with very low and very high frequencies. With this novel design, femtometer-level displacement of the frequency-determining element is amplified into collective motion of the entire micron-sized structure. The observed discrete response possibly results from energy quantization at the onset of the quantum regime in these macroscopic nanomechanical oscillators.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.94.030402

DOI:

10.1103/PhysRevLett.94.030402

PACS:

03.65.Ta, 62.25.+g, 62.30.+d, 62.40.+i

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Phys. Rev. Lett. 94, 030402 (2005) [4 pages]

Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators

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