Mechanics of Self-Folding of Single-layer Graphene
Jianliang Xiao (University of Colorado Boulder), Ming Li (Dalian University of Technology), Xianhong Meng (Beihang University)
Synthesis, Characterization, and Modeling of Low-Dimensional Nanomaterials
Tue 10:45 - 12:15
Salomon 202
The extreme out-of-plane flexibility makes single-layer graphene vulnerable to self-folding, driven by van der Waals interactions. Racket shaped bilayer graphene edges form after self-folding, which can significantly affect the electrical properties of graphenes. To study the self-folding behavior, a theoretical model based on finite deformation beam theory is established. The critical folding lengths for both metastable and stable self-folding, as well as the edge profile of a folded single-layer graphene, are given. They all agree very well with MD simulations. MD simulations also show that folding directions don’t have strong influence on the shape of folded graphene edges.