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) |
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Article number | 223103 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 22 |
DOIs | |
State | Published - Jun 3 2013 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)