Effects of noise on hysteresis and resonance width in graphene and nanotubes resonators

TL;DR

This paper explores how noise influences hysteresis and resonance in graphene and nanotube resonators, revealing that noise can control hysteresis regions and improve resonance quality by narrowing resonance width.

Contribution

It demonstrates that noise can be used to manipulate hysteresis regions and enhance resonance quality in nano-resonators, a novel insight into noise effects in these systems.

Findings

Noise controls the size and position of hysteresis regions.

Increasing noise reduces resonance width and increases quality factor.

Nano-resonators act as noise rectifiers.

Abstract

We investigate the role that noise plays in the hysteretic dynamics of a suspended nanotube or a graphene sheet subject to an oscillating force. We find that not only the size but also the position of the hysteresis region in these systems can be controlled by noise. We also find that nano-resonators act as noise rectifiers: by increasing the noise in the setup, the resonance width of the characteristic peak in these systems is reduced and, as a result, the quality factor is increased.