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Characterizing the chirality distribution of single‐walled carbon nanotube materials with tunable Raman spectroscopy
Author(s) -
Son H. B.,
Reina A.,
Dresselhaus M. S.,
Kong J.
Publication year - 2006
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.200669216
Subject(s) - raman spectroscopy , carbon nanotube , chirality (physics) , materials science , excitation , substrate (aquarium) , laser , confocal , spectroscopy , raman microscope , nanotube , raman scattering , nanotechnology , optoelectronics , analytical chemistry (journal) , optics , chemistry , chiral symmetry , physics , organic chemistry , oceanography , quantum mechanics , quark , geology , nambu–jona lasinio model
We have developed a methodology to use resonant Raman spectroscopy with a tunable excitation source to characterize the chirality distribution of a synthesized single‐walled carbon nanotube (SWNT) material. Isolated SWNTs are either dispersed or directly grown on substrates with markers. The samples are then placed on an automatic scanning stage of a confocal Raman microscope. Resonant Raman signals from SWNTs are collected while the laser spot scans across the substrate and a two‐dimensional mapping is obtained at each laser excitation energy. From the resonant Raman signal the chiralities of the SWNTs can be assigned and a chirality distribution of the material can therefore be obtained by examining hundreds to thousands SWNTs on the substrate. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)