Toward the Bulk, Chiral Separation of Carbon Nanotubes: Experimental Confirmation of Nanotube-Substrate Registration Effects
MITRE CORP MCLEAN VA MCLEAN United States
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We investigate experimentally the interaction of carbon nanotubes CNTs with highly ordered pyrolytic graphite HOPG as a first step toward realizing a method for the bulk, chiral separation of CNTs. Detailed calculations Phys. Rev. Lett. 92, 85503, 2004 suggest a very strongly preferred, chirality-dependent orientation for CNTs interacting with an HOPG substrate, resulting from the registration of atoms in the CNTs with those in the substrate. Here, we report preliminary experimental results evaluating the prevalence of this orientation dependence, and find that our initial results are consistent with the calculations.
- Refractory Fibers