Overcoming limitations of nanomechanical resonators with simultaneous resonances

TL;DR

This paper demonstrates a method to enhance nanomechanical resonators' performance by using simultaneous primary and superharmonic resonances to cancel nonlinearities, enabling larger amplitude operation and improved stability for sensing and timing applications.

Contribution

It introduces a novel approach combining nonlinear resonance techniques to significantly increase nanomechanical resonator amplitude and stability, surpassing traditional limits.

Findings

Successful experimental demonstration of nonlinear resonance cancellation.

Achievement of large amplitude oscillations without pull-in.

Potential for high-stability sensing and timing applications.

Abstract

Dynamic stabilization by simultaneous primary and superharmonic resonances for high order nonlinearity cancellation is demonstrated with an electrostatically-actuated, piezoresistively-transduced nanomechanical resonator. We prove experimentally how the combination of both the third-order nonlinearity cancellation and simultaneous resonances can be used to linearly drive a nanocantilever up to very large amplitudes compared to fundamental limits like pull-in occurrence, opening the way towards resonators with high frequency stability for high-performance sensing or time reference.