Foresight Nanotech Institute Logo
Image of nano


Carbon Nanotube Heterojunctions:
Nanoelectronic Devices

Madhu Menon(a) and Deepak Srivastava(b)*

(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.
There will be a link from here to the full article when it is available on the web.

 

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.


*Corresponding Address:
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: deepak@nas.nasa.gov



Donate Now

 

Foresight Programs

Join Now

 

Home About Foresight Blog News & Events Roadmap About Nanotechnology Resources Facebook Contact Privacy Policy

Foresight materials on the Web are ©1986–2014 Foresight Institute. All rights reserved. Legal Notices.

Web site development by Netconcepts. Email marketing by gravityMail. Maintained by James B. Lewis Enterprises.