Graphene & 2D Materials

The application of mechanical strain in single- and few-layer graphenes as well as in other two dimensional (2D) materials

(MoS2, WS2) is an important perturbation to tune their optical and electronic properties. Raman spectroscopy has

been proven a very successful technique to study the influence of mechanical strain in 2D materials under uniaxial tension,

compression or hydrostatic (biaxial) strain. The monitoring of optical phonons seems to be the clearest and simplest way to

quantify the macroscopic stress/strain imparted to 2D membranes. In this speech, recent results on the uniaxial and biaxial

Raman response of selected 2D materials will be presented and discussed. The results will be coupled by theoretical analysis

based on molecular dynamics simulations using accurate atomistic potentials. Emphasis should be given on the perspectives

in the design of graphene based nanocomposites and flexible electronics.