Support Options

Submit a Support Ticket



By Gyungseon Seol1, Youngki Yoon1, James K Fodor1, Jing Guo1, Akira Matsudaira2, Diego Kienle2, Gengchiau Liang2, Gerhard Klimeck2, Mark Lundstrom2, Ahmed Ibrahim Saeed3

1. University of Florida 2. Purdue University 3. Ain Shams University

This tool simulates E-k and DOS of CNTs and graphene nanoribbons.

Launch Tool

This tool version is unpublished and cannot be run. If you would like to have this version staged, you can put a request through HUB Support.

Archive Version 2.7
Published on 12 Nov 2010
Latest version: 2.7.2. All versions

doi:10.4231/D3RB6W23S cite this

Open source: license | download



Published on


CNTbands can simulate electronic band structure and density of states for carbon nanotubes (CNT), as well as graphene nanoribbons (GNR). It also computes some basic parameters, such as nanotube diameter, number of hexagons in the unit cell, and band gap. Users may select the GNR structure to be simulated by selecting a starting point and components for a chiral vector. CNTs are simulated either with a simple Pz orbital model or Extended Huckel theory. The Extended Huckel model can deliver more accurate simulation results, especially for small-diameter CNTs.

Tool versions
  • Version 2.5 includes (1) treatment of spin polarization along the zigzag edges of GNRs and (2) edge bond relaxation effect for armchair GNRs.
Please see the carbon nanotube and graphene nanoribbon topics page for more related nanoHUB resources.

Tags, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.