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Entanglement and the Nonlinear Elastic Behavior of Forests of Coiled Carbon Nanotubes

Published online by Cambridge University Press:  01 February 2011

Vitor R. Coluci ,
Alexandre F. Fonseca ,
Douglas S. Galvao  and
Chiara Daraio
Vitor R. Coluci
Affiliation:
galvao@ifi.unicamp.br, State University of Campinas, Applied Physics, DFA-IFGW-UNICAMP, Campinas-SP, 13081-970, Brazil, +55-1935215369, +55-1935215376
Alexandre F. Fonseca
Affiliation:
afonseca@if.usp.br, University of Texas at Dallas, Alan G. McDiarmid NanoTech Institute, Richardson, TX, 5083-0688, United States
Douglas S. Galvao
Affiliation:
galvao@ifi.unicamp.br, State University of Campinas, Applied Physics, DFA-IFGW-UNICAMP, Campinas-SP, 13081-970, Brazil, +55-1935215369, +55-1935215376
Chiara Daraio
Affiliation:
daraio@caltech.edu, California Institute of Technology, Aeronautics and Applied Physics, Pasadena, CA, 91125, United States
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Abstract

A model for the elastic response of a foamlike forest of coiled carbon nanotubes under mechanical impact is proposed according to recent experiments reported in the literature. A force vs. displacement relation is derived for different geometries of the impacting object (sphere, cube and circular cone). In the model, entanglement among neighboring coils in the superior part of the forest is explicitly taken into account and we show that it allows the full description of the strongly nonlinear elastic behavior of the forest.

Keywords

Ptnanostructureelectronic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1081: Symposium P – Carbon Nanotubes and Related Low-Dimensional Materials , 2008 , 1081-P08-24
Copyright
Copyright © Materials Research Society 2008

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