Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators

Details Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators

2005-03-11

arxiv.org/abs/cond-mat/0503260v1

Phys. Rev. Lett. 94, 030402 (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages, two-column format. Related papers available at http://nano.bu.edu/

Scientific paper

10.1103/PhysRevLett.94.030402

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.

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