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Type: Artigo
Title: Unzipping carbon nanotubes at high impact
Author: Ozden, S.
Autreto, P. A. S.
Tiwary, C. S.
Khatiwada, S.
Machado, L.
Galvao, D. S.
Vajtai, R.
Barrera, E. V.
Ajayan, P. M.
Abstract: The way nanostructures behave and mechanically respond to high impact collision is a topic of intrigue. For anisotropic nanostructures, such as carbon nanotubes, this response will be complicated based on the impact geometry. Here we report the result of hypervelocity impact of nanotubes against solid targets and show that impact produces a large number of defects in the nanotubes, as well as rapid atom evaporation, leading to their unzipping along the nanotube axis. Fully atomistic reactive molecular dynamics simulations are used to gain further insights of the pathways and deformation and fracture mechanisms of nanotubes under high energy mechanical impact. Carbon nanotubes have been unzipped into graphene nanoribbons before using chemical treatments but here the instability of nanotubes against formation, fracture, and unzipping is revealed purely through mechanical impact. defect
Subject: Nanotubos de carbono
Carbon nanotubes
Country: Estados Unidos
Editor: American Chemical Society
Rights: fechado
Identifier DOI: 10.1021/nl501753n
Date Issue: 2014
Appears in Collections:IFGW - Artigos e Outros Documentos

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