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Effect of nanofiber proximity on the mechanical behavior of high volume fraction aligned carbon nanotube arrays

Author(s)
Cebeci, Hulya Geyik; Stein, Itai Y.; Wardle, Brian L.
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Abstract
The effect of nanofiber proximity on the mechanical behavior of nanofiber arrays with volume fractions (V f) from 1% to 20% was quantified via nanoindentation of an aligned carbon nanotube (A-CNT) array. The experimental results show that the indentation modulus for A-CNT arrays has a highly non-linear scaling with the CNT V f, leading to modulus enhancements of up to ∼600× at V f = 20%. Modeling illustrates that the origin of the highly non-linear trend with V f is due to the minimum inter-CNT spacing, which is shown to be more than an order of magnitude larger than the graphitic spacing.
Date issued
2014-01
URI
http://hdl.handle.net/1721.1/86881
Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics; Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
Applied Physics Letters
Publisher
American Institute of Physics
Citation
Cebeci, Hülya, Itai Y. Stein, and Brian L. Wardle. “Effect of Nanofiber Proximity on the Mechanical Behavior of High Volume Fraction Aligned Carbon Nanotube Arrays.” Appl. Phys. Lett. 104, no. 2 (January 13, 2014): 023117.
Version: Author's final manuscript
ISSN
0003-6951
1077-3118

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