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(a)Department of Physics and Astronomy
University of Kentucky, Lexington, KY 40506
(b)Computational Molecular Nanotechnology Group
This is an abstract for a talk to be given at the Fifth Foresight Conference on Molecular Nanotechnology.
Structural stability of various nanotube junctions are investigated
using a generalized tight-binding molecular dynamics (GTBMD) scheme that
incorporates non-orthogonality of the orbitals. The junctions investigated
include straight and small-angle hetero-junctions of various chiralities
and diameters as well as more complex "T-junctions" and "Y-junctions".
The latter junctions do not always obey the usual pentagon-heptagon pair
rule that characterizes the former junctions. The study of local densities
of states (LDOS) reveal many interesting features, most prominent among
them being the defect-induced states in the gap. The 3-point junctions are
one of the smallest possible tunnel junctions made up entirely of
carbon atoms, their use in a net-work of molecular electronics components
will be discussed in this paper.
Deepak Srivastava, NASA Ames Research Center, M/S T27A-1; Moffett Field, CA 94035-1000; telephone: (415) 604-3963; fax: (415) 966-8669; e-mail: firstname.lastname@example.org
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