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Control of microstructural heterogeneities in carbon nanotube foams

Raney, Jordan R. and Wang, Richard Y. and Daraio, Chiara (2013) Control of microstructural heterogeneities in carbon nanotube foams. Carbon, 52 . pp. 193-200. ISSN 0008-6223. doi:10.1016/j.carbon.2012.09.020.

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Arrays of aligned carbon nanotubes (CNTs) under compression are known to exhibit a dissipative hysteretic response similar to classical foams. Here, we control the microstructure of the arrays during synthesis using a variable supply of carbon source and catalyst. We control CNT alignment and density along the array height, creating bands of high- and low-density regions. We study the dynamic response of these materials and show the ability to tailor the location and extent of strain localization under compression. We show that the synthesis procedures described herein allow for construction of CNT arrays with improved protection and energy dissipation in impact tests.

Item Type:Article
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URLURL TypeDescription DOIArticle
Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2012 Elsevier Ltd. Received 17 April 2012; Accepted 10 September 2012; Available online 18 September 2012. The authors thank Prof. Jinkyu Yang for his support with the impact tests and Lauren C. Montemayor for her assistance with the assembly of the synthesis apparatus. This work is supported by the Institute for Collaborative Biotechnologies, under contract W911NF-09-D-0001 with the Army Research Office. JRR also gratefully acknowledges support from the Department of Defense via a National Defense Science and Engineering Graduate (NDSEG) fellowship.
Funding AgencyGrant Number
Army Research Office (ARO)W911NF-09-D-0001
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Record Number:CaltechAUTHORS:20130228-124430510
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Official Citation:Jordan R. Raney, Richard Y. Wang, Chiara Daraio, Control of microstructural heterogeneities in carbon nanotube foams, Carbon, Volume 52, February 2013, Pages 193-200, ISSN 0008-6223, 10.1016/j.carbon.2012.09.020.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37208
Deposited By: Tony Diaz
Deposited On:01 Mar 2013 00:08
Last Modified:09 Nov 2021 23:27

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