Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/328557
Type: Artigo
Title: Ballistic Fracturing Of Carbon Nanotubes
Ballistic fracturing of carbon nanotubes
Author: Ozden, S.
Machado, L. D.
Tiwary, C. S.
Autreto, P. A. S.
Vajtai, R.
Barrera, E. V.
Galvao, D. S.
Ajayan, P. M.
Abstract: Advanced materials with multifunctional capabilities and high resistance to hypervelocity, impact are of great interest to the designers of aerospace structures. Carbon nanotubes (CNTs) with their lightweight and high strength properties are alternative-to metals and/or metallic alloys conventionally used in aerospace-applications. Here we report, a detailed study on the ballistic fracturing of CNTs for different velocity ranges. Our-results show that the highly energetic impacts cause bond breakage and carbon atom rehybridizations, and sometimes extensive structural reconstructions were also observed Experimental;, observations Show the formation of nanoribbons,, nanodiamonds, and covalently interconnected nanostructures, depending On impact conditions. Fully atotnistic reactive molecular dynamics simulations were also carried out in order to gain further insights into the mechanism behind the transformation of CNTs. The simulations show that the velocity and relative-orientation of the multiple colliding :nanotubes are critical to determine the impact outcome.
Advanced materials with multifunctional capabilities and high resistance to hypervelocity, impact are of great interest to the designers of aerospace structures. Carbon nanotubes (CNTs) with their lightweight and high strength properties are alternative-to metals and/or metallic alloys conventionally used in aerospace-applications. Here we report, a detailed study on the ballistic fracturing of CNTs for different velocity ranges. Our-results show that the highly energetic impacts cause bond breakage and carbon atom rehybridizations, and sometimes extensive structural reconstructions were also observed Experimental,, observations Show the formation of nanoribbons,, nanodiamonds, and covalently interconnected nanostructures, depending On impact conditions. Fully atotnistic reactive molecular dynamics simulations were also carried out in order to gain further insights into the mechanism behind the transformation of CNTs. The simulations show that the velocity and relative-orientation of the multiple colliding :nanotubes are critical to determine the impact outcome.
Subject: High Impact
Unzipping
Carbon Nanotubes
Junction
Md Simulation
Nanotubos de carbono, Dinâmica molecular
Country: Estados Unidos
Editor: American Chemical Society
Citation: Acs Applied Materials & Interfaces. Amer Chemical Soc, v. 8, p. 24819 - 24825, 2016.
Rights: fechado
Identifier DOI: 10.1021/acsami.6b07547
Address: http://pubs.acs.org/doi/abs/10.1021/acsami.6b07547
Date Issue: 2016
Appears in Collections:IFGW - Artigos e Outros Documentos

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