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Folds and Buckles at the Nanoscale: Experimental and Theoretical Investigation of the Bending Properties of Graphene Membranes

  • Vittorio Morandi
  • Luca Ortolani
  • Andrea Migliori
  • Cristian Degli Esposti Boschi
  • Emiliano Cadelano
  • Luciano Colombo
Chapter
Part of the Topics in Current Chemistry book series (TOPCURRCHEM, volume 348)

Abstract

The elastic properties of graphene crystals have been extensively investigated, revealing unique properties in the linear and nonlinear regimes, when the membranes are under either stretching or bending loading conditions. Nevertheless less knowledge has been developed so far on folded graphene membranes and ribbons. It has been recently suggested that fold-induced curvatures, without in-plane strain, can affect the local chemical reactivity, the mechanical properties, and the electron transfer in graphene membranes. This intriguing perspective envisages a materials-by-design approach through the engineering of folding and bending to develop enhanced nano-resonators or nano-electro-mechanical devices. Here we present a novel methodology to investigate the mechanical properties of folded and wrinkled graphene crystals, combining transmission electron microscopy mapping of 3D curvatures and theoretical modeling based on continuum elasticity theory and tight-binding atomistic simulations.

Keywords

3D reconstruction Bending rigidity Geometric phase analysis Graphene Tight binding Transmission electron microscopy 

Abbreviations

BLE

Bilayered edged graphene

CNT

Carbon nanotube

CVD

Chemical vapor deposition

DP

Diffraction pattern

FFT

Fast Fourier transform

GPA

Geometric phase analysis

HRTEM

High resolution transmission electron microscopy

STEM

Scanning transmission electron microscope

TB

Tight-binding

TEM

Transmission electron microscope

Notes

Acknowledgement

One of us (L.C.) acknowledges financial support under project PRIN 2010–2011 “GRAF”.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Vittorio Morandi
    • 1
  • Luca Ortolani
    • 1
  • Andrea Migliori
    • 1
  • Cristian Degli Esposti Boschi
    • 1
  • Emiliano Cadelano
    • 2
  • Luciano Colombo
    • 2
  1. 1.CNR-IMM BolognaBolognaItaly
  2. 2.Department of PhysicsUniversity of Cagliari, Cittadella UniversitariaMonserrato (Ca)Italy

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