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Title: Graphene folding on flat substrates

We present a combined experimental-theoretical study of graphene folding on flat substrates. The structure and deformation of the folded graphene sheet are experimentally characterized by atomic force microscopy. The local graphene folding behaviors are interpreted based on nonlinear continuum mechanics modeling and molecular dynamics simulations. Our study on self-folding of a trilayer graphene sheet reports a bending stiffness of about 6.57‚ÄČeV, which is about four times the reported values for monolayer graphene. Our results reveal that an intriguing free sliding phenomenon occurs at the interlayer van der Waals interfaces during the graphene folding process. This work demonstrates that it is a plausible venue to quantify the bending stiffness of graphene based on its self-folding conformation on flat substrates. The findings reported in this work are useful to a better understanding of the mechanical properties of graphene and in the pursuit of its applications.
Authors:
; ;  [1] ; ;  [2]
  1. Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, New York 13902 (United States)
  2. College of Engineering, University of Georgia, Athens, Georgia 30602 (United States)
Publication Date:
OSTI Identifier:
22308179
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ATOMIC FORCE MICROSCOPY; EV RANGE; FLEXIBILITY; GRAPHENE; MOLECULAR DYNAMICS METHOD; NANOSTRUCTURES; SIMULATION; SUBSTRATES; VAN DER WAALS FORCES