Raman characterization of electronic transition energies of metallic single-wall carbon nanotubes

2006 ◽  
Vol 74 (7) ◽  
Author(s):  
Hyungbin Son ◽  
Alfonso Reina ◽  
Ge. G. Samsonidze ◽  
Riichiro Saito ◽  
Ado Jorio ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Transition ◽  
Single Wall Carbon Nanotubes ◽  
Transition Energies ◽  
Single Wall Carbon ◽  
Raman Characterization ◽  
Electronic Transition Energies

Corrections to the Optical Transition Energies in Single-Wall Carbon Nanotubes of Smaller Diameters

2004 ◽  
Vol 858 ◽  
Author(s):  
Georgii G. Samsonidze ◽  
Riichiro Saito ◽  
Jie Jiang ◽  
Alexander Grüneis ◽  
Naoki Kobayashi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Transition ◽  
Density Functional ◽  
Accurate Determination ◽  
Small Diameter ◽  
Binding Energies ◽  
Single Wall Carbon Nanotubes ◽  
Transition Energies ◽  
Single Wall Carbon ◽  
Electronic Transition Energies

ABSTRACTOptical spectroscopy characterization of carbon nanotube samples requires accurate determination of their band structure and exciton binding energies. In this paper, we present a non-orthogonal density-functional based tight-binding calculation for the electronic transition energies in single-wall carbon nanotubes. We show that the curvature-induced rehybridization of the electronic orbitals, long-range atomic interactions, and geometrical structure relaxation all have a significant impact on the electronic transition energies in the small diameter limit. After including quasiparticle corrections and exciton binding energies, the calculated electronic transition energies show good agreement with the experimental transition energies observed by photoluminescence and resonance Raman spectroscopy.

Raman characterization of single wall carbon nanotubes prepared by the solar energy route

Carbon ◽  
1998 ◽  
Vol 36 (12) ◽  
pp. 1815-1820 ◽  
Author(s):  
Eric Anglaret ◽  
Nedjma Bendiab ◽  
Tony Guillard ◽  
Catherine Journet ◽  
Gilles Flamant ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Solar Energy ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Raman Characterization

Formation Of Single-Wall Carbon Nanotubes Forrest Assemblies On Metal Surfaces

2002 ◽  
Vol 734 ◽  
Author(s):  
Debjit Chattopadhyay ◽  
Izabela Galeska ◽  
Fotios Papadimitrakopoulos
Keyword(s):  
Carbon Nanotubes ◽  
Surface Coverage ◽  
Iron Hydroxide ◽  
Growth Characteristics ◽  
Self Organization ◽  
Single Wall Carbon Nanotubes ◽  
Unique Challenge ◽  
Single Wall Carbon ◽  
Topological Characteristics

ABSTRACTLearning how to purify and manipulate single wall carbon nanotubes (SWNTs) presents a unique challenge in material science. The processing-related difficulties of these long nano-fibers stem from their high aspect ratio, rigidity and the profound hydrophobic attractions along their tubular walls. Shortening them into discrete segments, with lengths from tens to hundreds of nanometers, presents a viable methodology to alleviate the shape-induced intractability. In addition, the metal-assisted self-organization of these nanosized objects into nano-forest geometries with dense perpendicular surface grafting, demonstrates that such nanosized objects hold significant promise for the development of nanoscale devices. This paper will present an extensive characterization of the topological characteristics of these assemblies, along with their surface coverage, growth characteristics and height fluctuation on iron hydroxide substrates.

In Situ Atomic Force Microscopy Tip-Induced Deformations and Raman Spectroscopy Characterization of Single-Wall Carbon Nanotubes

Nano Letters ◽  
2012 ◽  
Vol 12 (8) ◽  
pp. 4110-4116 ◽  
Author(s):  
P. T. Araujo ◽  
N. M. Barbosa Neto ◽  
H. Chacham ◽  
S. S. Carara ◽  
J. S. Soares ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Atomic Force Microscopy ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Force Microscopy ◽  
Atomic Force
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