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Optical properties of coiled carbon nanotubes: A simple model
Author(s) -
Milošević Ivanka,
Popović Zoran,
Dmitrović Saša,
Damnjanović Milan
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201100181
Subject(s) - carbon nanotube , materials science , symmetry (geometry) , hexagonal crystal system , simple (philosophy) , tight binding , electronic band structure , optical properties of carbon nanotubes , selective chemistry of single walled nanotubes , nanotechnology , carbon fibers , condensed matter physics , chemical physics , nanotube , electronic structure , crystallography , physics , chemistry , composite material , geometry , composite number , mathematics , philosophy , epistemology
Experimental evidence of regularly coiled carbon nanotubes have been reported in 1994. They are predicted to have excellent electro‐magnetic properties, although their structure, formation mechanism and theoretical aspects are still subjects of scientific discussions. We propose model of hexagonal, helically coiled single wall carbon nanotubes, and determine their line group symmetry. Further, we calculate electronic band structure and optical conductivity of the various configurations of coiled nanotubes by means of fully symmetry adopted density functional tight binding implemented into the POLSym code. Comparison of conducting and optical properties of coiled and straight armchair carbon nanotubes is shown.