N o n l i n e a r   N a n o m e c h a n i c s

Nonlinear Nanomechanics:

Bistable states, switching,

stochastic resonance,

parametric amplification,

signal up and down


frequency entrainment,

macroscopic quantum

tunneling, coupled mode

measurement for

observation of quantization

Nonlinear nanomechanical systems provide a novel laboratory for exploring fascinating nonlinear phenomena, which are yet to be realized in solid-state systems. Recently, nonlinear nanomechanical systems have been used to demonstrate a number of effects, not easily accessed by conventional nonlinear systems. These include high frequency Duffing oscillators, hysteretic metastable states and controllable transition, stochastic resonance, parametric amplification, synchronization, signal up and down conversion, noise-driven resonance and controllable switching. Building on these classical effects, the proposed experimental program is designed to explore the quantum regime in an effort to observe quantum effects such as macroscopic quantum tunneling, quantized energy measurement and quantized phonon emission and absorption in a nanomechanical system. The proposed effort will also pave the way for a new generation of experiments in foundations of quantum mechanics and information processing.

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  1. Synchronized Oscillation in Coupled Nanomechanical Oscillators Seung-Bo Shim, Matthias Imboden, Pritiraj Mohanty, Science 316, 95 (2007).

  2. Signal amplification by 1/f noise in silicon-based nanomechanical resonators, D. N. Guerra, T. Dunn and P. Mohanty, Nano Lett. 9, 3096 (2009).

  3. Coherent Signal Amplification in Bistable Nanomechanical Oscillators by Stochastic Resonance Robert L. Badzey and Pritiraj Mohanty, Nature 437, 995 (2005).

  4. A Controllable Nanomechanical Memory Element, Robert L. Badzey, Guiti Zolfagharkhani, Alexei Gairdazhy, P. Mohanty, Appl. Phys. Lett. 85, 3587 (2004).