I-band-like non-dispersive inter-shell interaction induced Raman lines in the D-band region of double-walled carbon nanotubes
نویسندگان
چکیده
منابع مشابه
Strain-Induced D Band Observed in Carbon Nanotubes
We report the emergence of the D band Raman mode in single-walled carbon nanotubes under large axial strain. The D to G mode Raman intensity ratio (ID/IG) is observed to increase with strain quadratically by more than a factor of 100-fold. Up to 5% strain, all changes in the Raman spectra are reversible. The emergence of the D band, instead, arises from the reversible and elastic symmetry-lower...
متن کاملRaman spectroscopy of iodine-doped double-walled carbon nanotubes
We present a Raman spectroscopy study of iodine-intercalated (p-type doped) double-walled carbon nanotubes. Double-walled carbon nanotubes (DWCNTs) are synthesized by catalytic chemical vapor deposition (CCVD) and characterized by Raman spectroscopy. The assignment of the radial breathing modes and the tangential modes of pristine DWCNTs is done in the framework of the bond polarization theory,...
متن کاملBand gap fluorescence from individual single-walled carbon nanotubes.
Fluorescence has been observed directly across the band gap of semiconducting carbon nanotubes. We obtained individual nanotubes, each encased in a cylindrical micelle, by ultrasonically agitating an aqueous dispersion of raw single-walled carbon nanotubes in sodium dodecyl sulfate and then centrifuging to remove tube bundles, ropes, and residual catalyst. Aggregation of nanotubes into bundles ...
متن کاملChirality-dependent G-band Raman intensity of carbon nanotubes
R. Saito, A. Jorio, J. H. Hafner, C. M. Lieber, M. Hunter, T. McClure, G. Dresselhaus, and M. S. Dresselhaus Department of Electronic-Engineering, University of Electro-Communications, Tokyo, 182-8585 Japan Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 0...
متن کاملSubstrate-induced Raman frequency variation for single-walled carbon nanotubes.
We report on the monotonic Raman frequency shift and intensity variation when a laser spot moves along the same single-walled carbon nanotube (SWNT) for both the radial-breathing mode (RBM) and the G-band. Our substrates are Si wafers coated with thermal oxide, and trenches with widths of 1-80 mum are etched in the SiO2 by photolithography and reactive ion etching. SWNTs are grown by chemical v...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics A
سال: 2014
ISSN: 0947-8396,1432-0630
DOI: 10.1007/s00339-014-8762-z