Manipulation of graphene's dynamic ripples by local harmonic out-of-plane excitation

TL;DR

This paper demonstrates how local harmonic out-of-plane excitation can be used to control and manipulate the dynamic ripples in free-standing graphene, enabling potential property modulation.

Contribution

It introduces a molecular dynamics simulation approach to tune graphene's ripples through local sinusoidal excitation, revealing new methods for dynamic morphology control.

Findings

Control of ripple morphology via external excitation

Ability to flatten or stabilize ripples dynamically

Potential for property modulation through ripple manipulation

Abstract

With use of carefully designed molecular dynamics simulations, we demonstrate tuning of dynamic ripples in free-standing graphene by applying a local out-of-plane sinusoidal excitation. Depending on the boundary conditions and external modulation, we show control of the local dynamic morphology, including flattening and stable rippling patterns. In addition to studying the dynamic response of atomically thin layers to external time-varying excitation, our results open intriguing possibilities for modulating their properties via local dynamic morphology control.