Electronic structure of helically coiled carbon nanotubes

2005 ◽  
Vol 901 ◽  
Author(s):  
Gian Giacomo Guzman-Verri ◽  
Lok C. Lew Yan Voon ◽  
Morten Willatzen ◽  
Jens Gravesen
Keyword(s):  
Carbon Nanotubes ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Electronic Energy ◽  
Electronic Band ◽  
Curvature Effects ◽  
Helical Carbon Nanotubes ◽  
Coil Diameter ◽  
Curvature Energy ◽  
Effective Mass Approach

AbstractIn the present work we calculate the electronic band structure of single-wall helical carbon nanotubes following an effective-mass approach. We include curvature effects and strain due to bending in the band structure. The curvature energy ΔE, and the change in the electronic energy ΔEs due to strain, depend upon the coil pitch and coil diameter of the tube. We find 0.003 ≤|ΔE|≤ 1.3 eV and 0 ≤ΔEs ≤ 4.0 eV for the single-wall helical carbon nanotubes considered here.

ELECTRONIC BAND STRUCTURE OF CARBON NANOTUBES WITH QUINOID STRUCTURE

2013 ◽  
Vol 27 (25) ◽  
pp. 1350179
Author(s):  
NGUYEN NGOC HIEU ◽  
NGUYEN PHAM QUYNH ANH
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Tight Binding ◽  
Electronic Energy ◽  
Electronic Band ◽  
Tight Binding Approximation ◽  
Quinoid Structure ◽  
Structure Of Carbon Nanotubes

In this paper, we fully describe the geometry of atomic structure of carbon nanotube with quinoid structure. Electronic energy band structure of carbon nanotubes with quinoid structure is studied by tight-binding approximation. In the presence of bond alternation, calculations show that only armchair (n, n) carbon nanotube (without twisting) remains metallic and zigzag (3ν - 1, -3ν + 1) CNT becomes metallic at the critical elongation. Effect of deformation on the change of band gap is also calculated and discussed.

A consolidated account of electrochemical determination of band structure parameters in II–VI semiconductor quantum dots: a tutorial review

2019 ◽  
Vol 21 (9) ◽  
pp. 4695-4716 ◽  
Author(s):  
Pravin Popinand Ingole
Keyword(s):  
Quantum Dots ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Energy Levels ◽  
Electrochemical Determination ◽  
Electronic Energy ◽  
Semiconductor Quantum Dots ◽  
Electronic Band ◽  
Nano Structure ◽  
Electronic Energy Levels

Probing absolute electronic energy levels in semiconductor quantum dots (Q-dots) is crucial for engineering their electronic band structure and hence for precise design of composite nano-structure based devices.

scholarly journals Electronic Band Structure of Coiled Carbon Nanotubes

2011 ◽  
Vol 120 (2) ◽  
pp. 221-223 ◽  
Author(s):  
I. Milošević ◽  
M. Damnjanović
Keyword(s):  
Carbon Nanotubes ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Electronic Band

scholarly journals A Review of Electronic Band Structure of Graphene and Carbon Nanotubes Using Tight Binding

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Davood Fathi
Keyword(s):  
Carbon Nanotubes ◽  
Band Structure ◽  
Approximation Theory ◽  
Electronic Band Structure ◽  
Tight Binding ◽  
Single Walled Carbon Nanotubes ◽  
Electronic Band ◽  
Tight Binding Approximation ◽  
Chiral Nanotubes ◽  
Walled Carbon Nanotubes

The electronic band structure variations of single-walled carbon nanotubes (SWCNTs) using Huckle/tight binding approximation theory are studied. According to the chirality indices, the related expressions for energy dispersion variations of these elements are derived and plotted for zigzag and chiral nanotubes.

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