scholarly journals Confinement of Excitons for the Lowest Optical Transition Energies of Single Wall Carbon Nanotubes

2010 ◽  
Vol 8 ◽  
pp. 367-371
Author(s):  
Ahmad R. T. Nugraha ◽  
Kentaro Sato ◽  
Riichiro Saito
Keyword(s):  
Carbon Nanotubes ◽  
Optical Transition ◽  
Single Wall Carbon Nanotubes ◽  
Transition Energies ◽  
Single Wall Carbon

Family behavior of the optical transition energies in single-wall carbon nanotubes of smaller diameters

2004 ◽  
Vol 85 (23) ◽  
pp. 5703-5705 ◽  
Author(s):  
Ge. G. Samsonidze ◽  
R. Saito ◽  
N. Kobayashi ◽  
A. Grüneis ◽  
J. Jiang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Optical Transition ◽  
Single Wall Carbon Nanotubes ◽  
Transition Energies ◽  
Single Wall Carbon ◽  
Family Behavior

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.

Estimation of the mechanical properties of nanocomposites based on the properties prediction of single wall carbon nanotubes (SWCNT)

2015 ◽  
Vol 57 (5) ◽  
pp. 447-457 ◽  
Author(s):  
Hassan S. Hedia ◽  
Saad M. Aldousari ◽  
Ahmed K. Abdellatif ◽  
Gamal S. Abdelhaffez
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon
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