Buckling-driven delamination of carbon nanotube forests

Parisa Pour Shahid Saeed Abadi; Shelby B. Hutchens; Julia R. Greer; Baratunde A. Cola; Samuel Graham

doi:10.1063/1.4802080

Buckling-driven delamination of carbon nanotube forests

Parisa Pour Shahid Saeed Abadi, Shelby B. Hutchens, Julia R. Greer, Baratunde A. Cola, Samuel Graham

Research output: Contribution to journal › Article › peer-review

Abstract

We report buckling-driven delamination of carbon nanotube (CNT) forests from their growth substrates when subjected to compression. Macroscale compression experiments reveal local delamination at the CNT forest-substrate interface. Results of microscale flat punch indentations indicate that enhanced CNT interlocking at the top surface of the forest accomplished by application of a metal coating causes delamination of the forest from the growth substrate, a phenomenon not observed in indentation of as-grown CNT forests. We postulate that the post-buckling tensile stresses that develop at the base of the CNT forests serve as the driving force for delamination.

Original language	English (US)
Article number	223103
Journal	Applied Physics Letters
Volume	102
Issue number	22
DOIs	https://doi.org/10.1063/1.4802080
State	Published - Jun 3 2013
Externally published	Yes

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Physics and Astronomy (miscellaneous)

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10.1063/1.4802080

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title = "Buckling-driven delamination of carbon nanotube forests",

abstract = "We report buckling-driven delamination of carbon nanotube (CNT) forests from their growth substrates when subjected to compression. Macroscale compression experiments reveal local delamination at the CNT forest-substrate interface. Results of microscale flat punch indentations indicate that enhanced CNT interlocking at the top surface of the forest accomplished by application of a metal coating causes delamination of the forest from the growth substrate, a phenomenon not observed in indentation of as-grown CNT forests. We postulate that the post-buckling tensile stresses that develop at the base of the CNT forests serve as the driving force for delamination.",

author = "{Pour Shahid Saeed Abadi}, Parisa and Hutchens, {Shelby B.} and Greer, {Julia R.} and Cola, {Baratunde A.} and Samuel Graham",

note = "Funding Information: This work was partially supported by DARPA and the Space and Naval Warfare (SPAWAR) Systems Center, Pacific under Contract No. N66001-09-C-2013. J.R.G. and S.B.H. gratefully acknowledge the financial support from the Institute for Collaborative Biotechnologies (ICB) through grant W911NF-09-0001 from the U.S. Army Research Office. The content of the information does not necessarily reflect the position or the policy of the Government, and no official endorsement should be inferred.",

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doi = "10.1063/1.4802080",

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AU - Pour Shahid Saeed Abadi, Parisa

AU - Hutchens, Shelby B.

AU - Greer, Julia R.

AU - Cola, Baratunde A.

AU - Graham, Samuel

N1 - Funding Information: This work was partially supported by DARPA and the Space and Naval Warfare (SPAWAR) Systems Center, Pacific under Contract No. N66001-09-C-2013. J.R.G. and S.B.H. gratefully acknowledge the financial support from the Institute for Collaborative Biotechnologies (ICB) through grant W911NF-09-0001 from the U.S. Army Research Office. The content of the information does not necessarily reflect the position or the policy of the Government, and no official endorsement should be inferred.

PY - 2013/6/3

Y1 - 2013/6/3

N2 - We report buckling-driven delamination of carbon nanotube (CNT) forests from their growth substrates when subjected to compression. Macroscale compression experiments reveal local delamination at the CNT forest-substrate interface. Results of microscale flat punch indentations indicate that enhanced CNT interlocking at the top surface of the forest accomplished by application of a metal coating causes delamination of the forest from the growth substrate, a phenomenon not observed in indentation of as-grown CNT forests. We postulate that the post-buckling tensile stresses that develop at the base of the CNT forests serve as the driving force for delamination.

AB - We report buckling-driven delamination of carbon nanotube (CNT) forests from their growth substrates when subjected to compression. Macroscale compression experiments reveal local delamination at the CNT forest-substrate interface. Results of microscale flat punch indentations indicate that enhanced CNT interlocking at the top surface of the forest accomplished by application of a metal coating causes delamination of the forest from the growth substrate, a phenomenon not observed in indentation of as-grown CNT forests. We postulate that the post-buckling tensile stresses that develop at the base of the CNT forests serve as the driving force for delamination.

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Buckling-driven delamination of carbon nanotube forests

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