Transport in Suspended Monolayer and Bilayer Graphene Under Strain: A New Platform for Material Studies

TL;DR

This paper presents NEMS-based graphene devices enabling in situ strain modulation to study transport properties, revealing different responses in monolayer and bilayer graphene, and offering a platform for broader 2D material research.

Contribution

Developed NEMS devices for in situ strain-controlled transport measurements in graphene, demonstrating distinct responses in monolayer and bilayer samples, and adaptable to other 2D materials.

Findings

Different mobility responses to strain in monolayer and bilayer graphene

Devices enable in situ strain modulation during transport measurements

Platform adaptable to other 2D materials like MoS2

Abstract

We develop two types of graphene devices based on nanoelectromechanical systems (NEMS), that allows transport measurement in the presence of in situ strain modulation. Different mobility and conductance responses to strain were observed for single layer and bilayer samples. These types of devices can be extended to other 2D membranes such as MoS2, providing transport, optical or other measurements with in situ strain.