Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
Nanotechnology 501 Lecture Series
5.0 out of 5 stars
22 Feb 2005 | Series | Contributor(s): Gerhard Klimeck (editor), Mark Lundstrom (editor), Joseph M. Cychosz (editor)
Welcome to Nanotechnology 501, a series of lectures designed to provide an introduction to nanotechnology. This series is similar to our popular lecture series Nanotechnology 101, but it is directed at the graduate students and professionals.
Quantum Mechanics for Engineers: Podcasts
0.0 out of 5 stars
07 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck, David K. Ferry
This course will introduce the students to the basic concepts and postulates of quantum mechanics. Examples will include simple systems such as particle in an infinite and finite well, 1D and 2D harmonic oscillator and tunneling. Numerous approximation techniques, such as WKB method,...
Quantum Mechanics: Stationary Perturbation Theory
10 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck
Stationary perturbation theory is concerned with finding the changes in the discrete energy levels and the changes in the corresponding energy eigenfunctions of a system, when the Hamiltonian of a system is changed by a small amount. In this section we provide reading material regarding...
Crystal Directions and Miller Indices
04 Jun 2010 | Teaching Materials | Contributor(s): David K. Ferry, Dragica Vasileska, Gerhard Klimeck
Miller indices are a notation system in crystallography for planes and directions in crystal lattices. In particular, a family of lattice planes is determined by three integers, l, m, and n, the Miller indices. They are written (lmn) and denote planes orthogonal to a direction (l,m,n) in the...
Smith Chart Examples
02 Aug 2011 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck
Smith charts are used in RF applications to represent S-parameters and reflection coefficients of a two-port network. Examples are also given on calculation of the S-parameters for MEMT Structures using Silvaco ATLAS BLAZE module. Matching network construction is also illustrated.
Solar Cells Operation and Modeling
15 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides decribes the basic principles of operation of various generations on solar cells with emphasis to single crystalline solar cells. Next, semiconductor equations that describe the operation of a solar cell under simplified conditions is given. Finally, modeling of single junction...
Quantum Mechanics: WKB Approximation
09 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck
In physics, the WKB (Wentzel–Kramers–Brillouin) approximation, also known as WKBJ (Wentzel–Kramers–Brillouin–Jeffreys) approximation, is the most familiar example of a semiclassical calculation in quantum mechanics in which the wavefunction is recast as an exponential function, semiclassically...
Quantum Mechanics: Time Independent Schrodinger Wave Equation
07 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck
In physics, especially quantum mechanics, the Schrödinger equation is an equation that describes how the quantum state of a physical system changes in time. It is as central to quantum mechanics as Newton's laws are to classical mechanics.In the standard interpretation of quantum mechanics, the...
Slides: Zeeman Splitting
10 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck
Quantum Dot Wave Function (Quantum Dot Lab)
02 Feb 2011 | Animations | Contributor(s): Gerhard Klimeck, David S. Ebert, Wei Qiao
Electron density of an artificial atom. The animation sequence shows various electronic states in an Indium Arsenide (InAs)/Gallium Arsenide (GaAs) self-assembled quantum dot.
ECE 606 Solid State Devices
30 Aug 2012 | Courses | Contributor(s): Gerhard Klimeck
PN Junction Lab
12 Sep 2005 | Tools | Contributor(s): Dragica Vasileska, Matteo Mannino, Michael McLennan, Xufeng Wang, Gerhard Klimeck, Saumitra Raj Mehrotra, Benjamin P Haley
This tool enables users to explore and teach the basic concepts of P-N junction devices.
Nanoelectronic Modeling: From Quantum Mechanics and Atoms to Realistic Devices
30 Dec 2009 | Courses | Contributor(s): Gerhard Klimeck
The goal of this series of lectures is to explain the critical concepts in the understanding of the state-of-the-art modeling of nanoelectronic devices such as resonant tunneling diodes, quantum wells, quantum dots, nanowires, and ultra-scaled transistors. Three fundamental concepts critical to...
Quantum Mechanics: Landauer's Formula
08 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck
When a metallic nanojunction between two macroscopic electrodes is connected to a battery, electrical current flows across it. The battery provides, and maintains, the charge imbalance between the electrode surfaces needed to sustain steady-state conduction in the junction. This static...
Quantum Mechanics: Harmonic Oscillator
The quantum harmonic oscillator is the quantum mechanical analogue of the classical harmonic oscillator. It is one of the most important model systems in quantum mechanics because an arbitrary potential can be approximated as a harmonic potential at the vicinity of a stable equilibrium point....
Quantum Mechanics: Postulates
A physical system is generally described by three basic ingredients: states; observables; and dynamics (or law of time evolution) or, more generally, a group of physical symmetries. A classical description can be given in a fairly direct way by a phase space model of mechanics: states are points...
Crystal Viewer Tool
4.0 out of 5 stars
22 Dec 2007 | Tools | Contributor(s): Yuanchen Chu, Fan Chen, Daniel F Mejia, James Fonseca, Michael Povolotskyi, Gerhard Klimeck
Visualize different crystal lattices and planes
ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors
16 Jul 2008 | Tools | Contributor(s): Xufeng Wang, Dragica Vasileska, Gerhard Klimeck
One-stop-shop for teaching semiconductor device education
09 Apr 2010 | Animations | Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck
A fullerene is any molecule composed entirely of carbon, and can take the form of hollow spheres, ellipsoids, or tubes. Spherical fullerenes (often referred to as "buckyballs") are one of the known structurally different form of carbon. C60 are the most common of buckyball structures. …
ECE 694A: Professional Development Seminar Series
01 Feb 2010 | Series | Contributor(s): Gerhard Klimeck
The ECE Graduate Seminar, ECE 694, is designed to provide opportunities for professional development of graduate sudents, raise their awareness of various other issues that they may face in their professional careers, and provide them opportunities to survey research seminars of their interest.
29 Jul 2011 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides describes the quantum-mechanical process for tunneling and how it is accounted for in modeling semiconductor devices. We explain WKB approximation, transfer matrix approach and the Tsu-Esaki formula for the calculation of the current.
NEMO5 Tutorials (2012 Summer School)
19 Jul 2012 | Courses | Contributor(s): James Fonseca, Tillmann Christoph Kubis, Michael Povolotskyi, Jean Michel D Sellier, Parijat Sengupta, Junzhe Geng, Mehdi Salmani Jelodar, Seung Hyun Park, Gerhard Klimeck
While the general topics presented in the summer school materials are still applicable, many details have changed. If you are looking at these to learn how to use NEMO5, check out the newer materials here:https://nanohub.org/resources/21824
Band Structure Lab
19 May 2006 | Tools | Contributor(s): Samik Mukherjee, Kai Miao, Abhijeet Paul, Neophytos Neophytou, Raseong Kim, Junzhe Geng, Michael Povolotskyi, Tillmann Christoph Kubis, Arvind Ajoy, Bozidar Novakovic, James Fonseca, Hesameddin Ilatikhameneh, Sebastian Steiger, Michael McLennan, Mark Lundstrom, Gerhard Klimeck
Computes the electronic and phonon structure of various materials in the spatial configuration of bulk , quantum wells, and wires
30 Mar 2006 | Tools | Contributor(s): Shaikh S. Ahmed, Saumitra Raj Mehrotra, SungGeun Kim, Matteo Mannino, Gerhard Klimeck, Dragica Vasileska, Xufeng Wang, Himadri Pal, Gloria Wahyu Budiman
Simulates the current-voltage characteristics for bulk, SOI, and double-gate Field Effect Transistors (FETs)
4.5 out of 5 stars
21 Jul 2005 | Online Presentations | Contributor(s): Gerhard Klimeck
Quantum Dots are man-made artificial atoms that confine electrons to a small space. As such, they have atomic-like behavior and enable the study of quantum mechanical effects on a length scale that is around 100 times larger than the pure atomic scale. Quantum dots offer application opportunities...