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In solid-state physics, the electronic band structure of a solid describes ranges of energy that an electron is "forbidden" or "allowed" to have. It is a function of the diffraction of the quantum mechanical electron waves in the periodic crystal lattice with a specific crystal system and Bravais lattice. The band structure of a material determines several characteristics, in particular its electronic and optical properties. More information on Band structure can be found here.
Introduction to CNTbands
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28 Jun 2007 | | Contributor(s):: James K Fodor, Jing Guo
This learning module introduces nanoHUB users to the CNTbands simulator. A brief introduction to CNTbands is presented, followed by voiced presentations featuring the simulator in action. Upon completion of this module, users should be able to use this simulator to gain valuable insight into the...
15 Jun 2007 | | Contributor(s):: Joe Ringgenberg, Joydeep Bhattacharjee, Jeffrey B. Neaton, Jeffrey C Grossman, Eric Schwegler
Explore the influence of strain on first-principles bandstructures of semiconductors.
Bandstructure of Carbon Nanotubes and Nanoribbons
14 Jun 2007 | | Contributor(s):: James K Fodor, Seokmin Hong, Jing Guo
This learning module introduces users to the Carbon-Nano Bands simulation tool, which simulates the bandstructure of Carbon Nanotubes (CNTs) and Nanoribbons (CNRs). To gives users a strong background in bandstructure, the module starts with sections that introduce bandstructure basics. To this...
Atomistic Alloy Disorder in Nanostructures
26 Feb 2007 | | Contributor(s):: Gerhard Klimeck
Electronic structure and quantum transport simulations are typically performed in perfectly ordered semiconductor structures. Bands and modes are defined resulting in quantized conduction and discrete states. But what if the material is fundamentally disordered? What if the disorder is at the...
Energy Bands In Periodic Potentials
11 Jan 2007 | | Contributor(s):: Heng Li
It is the Kronig-Penny Model.The particle in one-dimensional lattice is a problem that occurs in the model of periodic crystal lattice.The potential is caused by periodic arrangement of ions in the crystal structure. The graph presents the real part of transmission matrix element P11 plotted...
Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields
08 Jan 2007 |
As nanonphotonics and nanoelectronics are pushed down towards the molecular scale, interesting effects emerge. We discuss how birefringence (different propagation of two polarizations) is manifested and could be useful in the future for two systems: coherent plasmonic transport of near-field...
14 Dec 2006 | | Contributor(s):: Gyungseon Seol, Youngki Yoon, James K Fodor, Jing Guo, Akira Matsudaira, Diego Kienle, Gengchiau Liang, Gerhard Klimeck, Mark Lundstrom, Ahmed Ibrahim Saeed
This tool simulates E-k and DOS of CNTs and graphene nanoribbons.
Device Physics and Simulation of Silicon Nanowire Transistors
28 Sep 2006 |
As the conventional silicon metal-oxide-semiconductor field-effect transistor (MOSFET) approaches its scaling limits, many novel device structures are being extensively explored. Among them, the silicon nanowire transistor (SNWT) has attracted broad attention from both the semiconductor industry...
ECE 659 Lecture 19: Band Structure: Prelude to Sub-Bands
24 Feb 2003 | | Contributor(s):: Supriyo Datta
Reference Chapter 5.2
ECE 659 Lecture 18: Band Structure: 3-D Solids
Reference Chapter 5.3
ECE 659 Lecture 17: Band Structure: Beyond 1-D
21 Feb 2003 | | Contributor(s):: Supriyo Datta
ECE 659 Lecture 16: Band Structure: Toy Examples
19 Feb 2003 | | Contributor(s):: Supriyo Datta
Reference Chapter 5.1
Simplified Band-Structure Model
02 Jun 2006 | | Contributor(s):: Dragica Vasileska
Solid-State Theory and Semiconductor Transport Fundamentals
30 May 2006 | | Contributor(s):: Marcelo Kuroda, Salvador Barraza-Lopez,
Calculates the phonon band structure of carbon nanotubes using the force constant method.
Bandstructure in Nanoelectronics
01 Nov 2005 | | Contributor(s):: Gerhard Klimeck
This presentation will highlight, for nanoelectronic device examples, how the effective mass approximation breaks down and why the quantum mechanical nature of the atomically resolved material needs to be included in the device modeling. Atomistic bandstructure effects in resonant tunneling...
09 Sep 2005 | | Contributor(s):: Jing Guo, Akira Matsudaira
Computes E(k) and the density-of-states (DOS) vs. energy for a carbon nanotube
17 Jun 2005 | | Contributor(s):: Kyeongjae Cho
Easy-to-use interface for designing and analyzing electronic properties of different nano materials
MATLAB Scripts for "Quantum Transport: Atom to Transistor"
15 Mar 2005 | | Contributor(s):: Supriyo Datta
Tinker with quantum transport models! Download the MATLAB scripts used to demonstrate the physics described in Supriyo Datta's book Quantum Transport: Atom to Transistor. These simple models are less than a page of code, and yet they reproduce much of the fundamental physics observed in...
Electronic Transport Through Self-Assembled Monolayers
25 Feb 2004 | | Contributor(s):: Takhee Lee
Characterization of charge transport in molecular scale electronic devices has to date shown exquisite sensitivity to specifics of device fabrication and preparation. Thus, intrinsic molecular band structure has been problematic to extract from published results. Here we demonstrate...
Nanoelectronics/Mechanics With Carbon Nanotubes
26 Feb 2004 |
In this talk, I will present efforts to understand electrical/mechanical properties of carbon nanotubes (CNTs) by combining electric transport measurements and the scanning probe microscopy.