Deflection of suspended graphene by a transverse electric field

TL;DR

This paper presents an analytical and simulation-based study of how a transverse electric field causes deflection and oscillation in suspended graphene nanoribbons, revealing size-dependent frequency changes.

Contribution

It introduces a new analytical model validated by atomistic simulations to predict electric field-induced deflections and oscillations in graphene nanoribbons.

Findings

Electric polarization causes deflection and oscillation in graphene.

Oscillation frequency decreases with increasing graphene size.

Model accurately predicts deformation under various electric fields.

Abstract

We investigate the electromechanical response of doubly clamped graphene nanoribbons to a transverse gate voltage. An analytical model is developed to predict the field-induced deformation of graphene nanoribbons as a function of field intensity and graphene geometry. This model is validated thought atomistic simulations using the combination of a constitutive charge-dipole model and a pseudo-chemical many-body potential. As a newly observed effect of electric polarization, this field-induced deflection allows the graphene to oscillate at its natural frequency, which is found to decrease dramatically with increasing graphene size.