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Publication Citation: Elasticity and rigidity percolation in networks of type-purified single-wall carbon nanotubes on flexible substrates

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Author(s): John M. Harris; JiYeon Huh; Matthew R. Semler; Christopher M. Stafford; Steven D. Hudson; Jeffrey A. Fagan; Erik K. Hobbie;
Title: Elasticity and rigidity percolation in networks of type-purified single-wall carbon nanotubes on flexible substrates
Published: October 29, 2013
Abstract: Wrinkles and folds in compressed thin films of type-purified single-wall carbon nanotubes (SWCNTs) on polydimethylsiloxane (PDMS) substrates are used to study the mechanical response of pristine nanotube networks. While the low-strain plateau moduli are consistent with the exceptional mechanical properties of the individual nanotubes, the films are remarkably fragile, with small yield strains that decrease with increasing thickness. A comparison with conductivity measurements performed on identical type-purified SWCNT films suggests more than a two-fold difference in the onset of rigidity vs. connectivity percolation, and we discuss the implications of this for rigid-rod percolation and the use of type-purified SWCNTs in flexible electronics.
Citation: Soft Matter
Volume: 9
Issue: 48
Pages: pp. 11568 - 11575
Keywords: carbon nanotubes; nanotubes; modulus; percolation; thin film; network
Research Areas: Characterization, Nanomaterials, Materials Science