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


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
Issue number22
StatePublished - Jun 3 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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