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Hess, Karl Barraza Lopez, Salvador 2015-09-25T20:02:58Z 2015-09-25T20:02:58Z 10000-01-01 2006 2006 Finally, and in a different direction, we calculate the effects of a longitudinal electrostatic perturbation on a metallic carbon nanotube to demonstrate conductance modulation. The external modulation would be screened in bulk metals but occurs in nanotubes because of their quasi two-dimensional shape allowing electrons to interact with nearby charges. This modulation is determined by the strength of the self-consistent potential and its periodicity over shorter or longer distances. We employ the zero temperature single-particle Green's function transport approach in the empirical tight-binding approximation to quantify the conductance. Made available in DSpace on 2015-09-25T20:02:58Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3242791.pdf: 2520837 bytes, checksum: 1adec739b79f880fdd84b6de671adf72 (MD5) Previous issue date: 2006 Embargo set by: Seth Robbins for item 81817 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 89 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. http://hdl.handle.net/2142/80535 (MiAaPQ)AAI3242791 eng Physics, Condensed Matter Theoretical Study of Carbon Nanotubes Adsorbed on the Silicon (100) Surface, And, Explorations on the Modulation of Conductance for Metallic Carbon Nanotubes text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.