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 journalArticlepeer-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 languageEnglish (US)
Article number223103
JournalApplied Physics Letters
Volume102
Issue number22
DOIs
StatePublished - Jun 3 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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