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Vibrational analysis of graphene based nanostructures

2011; Elsevier BV; Volume: 89; Issue: 11-12 Linguagem: Inglês

10.1016/j.compstruc.2011.02.017

1879-2243

Antonio Ávila, Alexandre Carlos Eduardo, Almir Silva Neto,

Boron and Carbon Nanomaterials Research

This paper deals with the molecular mechanics simulations of graphene nanostructures and their vibration behavior for potential applications on nano-electronics and nanocomposites. The fundamental frequencies for CNTs range from 10 to 250 GHz and 100 to 1000 GHz for the cantilevered and bridged conditions, respectively. As the ratio L/d increases the fundamental frequency decreases, as expected. A decrease on fundamental frequencies with the bending waviness was noticed for all conditions. The mode shape for bent carbon nanotubes seems to be a superposition of the vibration mode and the bending mode for the zigzag configuration. Multi-layered graphene nanosheets were also investigated. The fundamental frequencies ranged from 50 to 150 GHz, with an odd/even shape mode switch.