Nanotechnology 501 Lecture Series

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

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, time-dependent …

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, …

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 stationary …

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.

Quantum Dots

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 …

Band Structure Lab

19 May 2006 | Tools | Contributor(s): Samik Mukherjee, Abhijeet Paul, Neophytos Neophytou, Raseong Kim, Junzhe Geng, Michael Povolotskyi, Tillmann Christoph Kubis, Arvind Ajoy, Bozidar Novakovic, Sebastian Steiger, Michael McLennan, Mark Lundstrom, Gerhard Klimeck

Computes the electronic structure of various materials in the spatial configuration of bulk (infinitely periodic), quantum wells (confined in one dimension, infinitely periodic in 2 dimensions), and wires (confined in 2 dimensions and infinitely periodic i

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 …

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 …

Crystal Viewer Tool

22 Dec 2007 | Tools | Contributor(s): Saumitra Raj Mehrotra, Michael Povolotskyi, Sebastian Steiger, Tillmann Christoph Kubis, Abhijeet Paul, Xingshu Sun, Victoria Savikhin, Gerhard Klimeck

Visualize different crystal lattices and planes

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 …

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 basis …

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

Quantum Dot Lab

12 Nov 2005 | Tools | Contributor(s): Gerhard Klimeck, Lars Bjaalie, Sebastian Steiger, David Ebert, Tillmann Christoph Kubis, Matteo Mannino, Michael McLennan, Hong-Hyun Park, Michael Povolotskyi

Compute the eigenstates of a particle in a box of various shapes including domes and pyramids.

MOSFet

30 Mar 2006 | Tools | Contributor(s): Shaikh S. Ahmed, Saumitra Raj Mehrotra, 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)

CNTbands

14 Dec 2006 | Tools | 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.

Bandstructure in Nanoelectronics

01 Nov 2005 | Online Presentations | 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 diodes, …

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 …

Why is Nanotechnology Multidisciplinary? A perspective of one EE

19 Oct 2006 | Online Presentations | Contributor(s): Gerhard Klimeck

The field of nano science and nano-technology covers broad areas of expertise. Classical fields of Physics, Chemistry, Material Science, Electrical/Mechanical/Chemical Engineering all are involved in the "new" field. Nano research and development is therefore multidisciplinary. This …

MOSCap

06 Apr 2006 | Tools | Contributor(s): Akira Matsudaira, Saumitra Raj Mehrotra, Shaikh S. Ahmed, Gerhard Klimeck, Dragica Vasileska

Capacitance of a MOS device

Band Structure Lab Demonstration: Bulk Strain

03 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck

This video shows an electronic structure calculation of bulk Si using Band Structure Lab. Several powerful features of this tool are demonstrated.

Quantum Mechanics: Periodic Potentials and Kronig-Penney Model

09 Jul 2008 | Series | Contributor(s): Dragica Vasileska, Gerhard Klimeck

The Kronig-Penney model is a simple approximation of a solid. The potential consists of a periodic arrangement of delta functions, square well or Coulomb well potentials. By means of epitaxial growth techniques artificial semiconductor superlattices can be realized, which behave very similar to the …

Carrier Statistics Lab: First-Time User Guide

05 Mar 2009 | Teaching Materials | Contributor(s): Abhijeet Paul, Gerhard Klimeck, Benjamin P Haley, Saumitra Raj Mehrotra

This first-time user guide is an introduction to the Carrier Statistics Lab . It provides basic definitions, guidance on how to run the tool, and suggested exercises to help users get accustomed to the idea of distribution functions as well as how these functions are used in determining the …

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.

Numerical Aspects of NEGF: The Recursive Green Function Algorithm

14 Jun 2004 | Online Presentations | Contributor(s): Gerhard Klimeck

Numerical Aspects of NEGF: The Recursive Green Function Algorithm