
Lecture 3: ResistanceBallistic to Diffusive
28 Jul 2011   Contributor(s):: Mark Lundstrom
The resistance of a ballistic conductor and concepts, such as the quantumcontact resistance, are introduced and discussed. The results are then generalized to treat transport all the way from the ballistic to diffusive regimes.

Lecture 2: Quantum of Conductance: Resistance and uncertainty
08 Sep 2010 

Nanotechnology Animation Gallery
22 Apr 2010   Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck
Animations and visualization are generated with various nanoHUB.org tools to enable insight into nanotechnology and nanoscience. Click on image for detailed description and larger image download. Additional animations are also available Featured nanoHUB tools: Band Structure Lab. Carrier...

Diffusion of holes and electrons
15 Apr 2010   Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck
Diffusion is a process of particles distributing themselves from regions of high to low concentrations. In semiclassical electronics these particles are the charge carriers (electrons and holes). The rate at which a carrier can diffuse is called diffusion constant with units of cm2/s. The...

Illinois ECE 440: Diffusion and Energy Band Diagram Homework
28 Jan 2010   Contributor(s):: Mohamed Mohamed
This homework covers Diffusion of Carriers, Builtin Fields and Metal semiconductor junctions.

Lecture 9: Dynamic Properties
05 Jan 2010   Contributor(s):: Ashlie Martini
Topics:Time correlation functionsEinstein relationsGreenKubo relations

The Virtual Kinetics of Materials Laboratory
09 Sep 2009   Contributor(s):: Alex Bartol, R. Edwin García, David R. Ely, Jon Guyer, Luis Enrique Sotelo Martin
web interface to develop, modify, and execute FiPy, Gibbs, and other pythonbased applications

Illinois ECE 440 Solid State Electronic Devices, Lecture 1617: Diffusion
20 Oct 2009   Contributor(s):: Eric Pop
So far:•Energy bands, Doping, Fermi levels•Drift (~n*v), diffusion (~dn/dx)•Einstein relationship (D/μ = kT/q)•“Boring” semiconductor resistors (either n or ptype)•Majority/minority carriers with illuminationToday, our first “useful” device:•The PN junction diode in equilibrium (external...

Illinois ECE 440 Solid State Electronic Devices, Lecture 1415: Diffusion with Recombination
08 Oct 2009   Contributor(s):: Eric Pop
•Diffusion with recombination•The diffusion length (distance until they recombine)

Illinois ECE 440 Solid State Electronic Devices, Lecture 13: Diffusion
01 Oct 2009   Contributor(s):: Eric Pop
ECE 440: Lecture 13Diffusion Current

Drift Diffusion Lab: FirstTime User Guide
13 Jun 2009   Contributor(s):: Saumitra Raj Mehrotra, Benjamin P Haley
This firsttime user guide provides introductory material to Drift Diffusion Lab on nanoHUB. It includes a tour of the Rappture interface, which notes key inputs and typical outputs. It also provides an introduction to concepts of drift and diffusion in a semiconductor. We discuss the default...

ECE 606 Lecture 17: Hall Effect, Diffusion
24 Feb 2009   Contributor(s):: Muhammad A. Alam
Outline:Measurement of mobilityHall Effect for determining carrier concentrationPhysics of diffusionConclusions

Illinois MATSE 280 Introduction to Engineering Materials, Lecture 6: Diffusion in Solids
19 Nov 2008   Contributor(s):: Duane Douglas Johnson, Omar N Sobh
Diffusion in SolidsISSUES TO ADDRESS... How does diffusion occur? How can the rate of diffusion be predicted forsome simple cases? How does diffusion depend on structure and temperatureContent Diffusion Steady and NonSteady State Simple Diffusion Interdiffusion Selfdiffusion...

Illinois MATSE 280 Introduction to Engineering Materials, Lecture 3 Part 4: Structures via Diffusion
28 Sep 2008   Contributor(s):: Duane Douglas Johnson, Omar N Sobh
Structures via DiffractionGoals Define basic ideas of diffraction (using xray, electrons, or neutrons, which, although they are particles, they can behave as waves) and show how to determine: Crystal Structure Miller Index Planes and Determine the Structure Identify cell symmetry Learning...

Computational Nanoscience, Lecture 21: Quantum Monte Carlo, part II
15 May 2008   Contributor(s):: Jeffrey C Grossman, Elif Ertekin
This is our second lecture in a series on Quantum Monte Carlo methods. We describe the Diffusion Monte Carlo approach here, in which the approximation to the solution is not restricted by choice of a functional form for the wavefunction. The DMC approach is explained, and the fixed node...

MuGFET
17 Jan 2008   Contributor(s):: SungGeun Kim, Gerhard Klimeck, Sriraman Damodaran, Benjamin P Haley
Simulate the nanoscale multigateFET structures (finFET and nanowire) using drift diffusion approaches

Nanotechnology Research Opportunities within the Forest Products Industry
28 Apr 2008   Contributor(s):: Robert J. Moon
This talk will provide an overview of research opportunities withinforest products industry. There will be a general description of theanatomical and chemical structure of wood, their connection to wood's anisotropic properties and how nanotechnology research can be applied to provide unique...

Lecture 20: Diffusion  Part2
23 Apr 2008   Contributor(s):: Paul R Selvin
Diffusion and bacteria moving, power consumed by bacteria, Introduction to Reynolds number, Where Bacteria Live, How E. Coli move and swim,

Lecture 17: Diffusion  Part 1
15 Apr 2008   Contributor(s):: Paul R Selvin
Diffusion, Directed motors, Thermal motion, nerve synapse, Efficiency of Diffusion

BJT Lab
06 Feb 2008   Contributor(s):: Saumitra Raj Mehrotra, Abhijeet Paul, Gerhard Klimeck, Dragica Vasileska, Gloria Wahyu Budiman
This tool simulates a Bipolar Junction Transistor (BJT) using a 2D mesh. Powered by PADRE.