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Type: Artigo de periódico
Title: Theoretical investigation of electromechanical effects for graphyne carbon nanotubes
Author: Coluci, VR
Galvao, DS
Baughman, RH
Abstract: We present a theoretical study of the electronic and mechanical properties of graphyne-based nanotubes (GNTs). These semiconducting nanotubes result from the elongation of one-third of the covalent interconnections of graphite-based nanotubes by the introduction of yne groups. The effect of charge injection on the dimensions of GNTs was investigated using tight-binding calculations. Low amounts of electron injection are predicted to cause qualitatively different responses for armchair and zigzag graphyne nanotubes. Although the behavior is qualitatively similar to the usual carbon nanotubes, the charge-induced strains are predicted to be smaller for the GNTs than for ordinary single walled carbon nanotubes. (C) 2004 American Institute of Physics.
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.1772756
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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