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.
Lecture 3: Resistance-Ballistic 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 4: Bottom-up Approach to Thermoelectricity
08 Sep 2010 | | Contributor(s):: Supriyo Datta
Lecture 4: Thermoelectric Effects-Physical Approach
The effect of temperature gradients on current flow and how electrical currents produce heat currents are discussed.
Lecture 5: Electron Spin: How to rotate an electron to control the current
09 Sep 2010 | | Contributor(s):: Supriyo Datta
Lecture 5: Thermoelectric Effects - Mathematics
16 Aug 2011 | | Contributor(s):: Mark Lundstrom
Beginning with the general model for transport, we mathematically deriveexpressions for the four thermoelectric transport coefficients:(i) Electrical conductivity,(ii) Seebeck coefficient (or "thermopower"),(iii) Peltier coefficient,(iv) Electronic heat conductivity.
Lecture 6: An Introduction to Scattering
In this lecture, we show how the mean-free-path (mfp) is related to thetime between scattering events and briefly discuss how the scattering time is related to underlying physical processes.
Lecture 6: From Spins to Magnets: How quantum objects turn classical
Lecture 7: The Boltzmann Transport Equation
17 Aug 2011 | | Contributor(s):: Mark Lundstrom
Semi-classical carrier transport is traditionally described by the Boltzmann Transport Equation (BTE). In this lecture, we present theBTE, show how it is solved, and relate it to the Landauer Approach usedin these lectures
Lecture 8: Measurements
A brief introduction to commonly-used techniques, such as van der Pauw and Hall effect measurements.
Lecture 9: Introduction to Phonon Transport
This lecture is an introduction to phonon transport. Key similarities and differences between electron and phonon transport are discussed.
Lessons from Nanoelectronics
20 Jul 2011 | | Contributor(s):: Supriyo Datta
Everyone is familiar with the amazing performance of a modern laptop, powered by a billion-plus nanotransistors, each having an active region that is barely a few hundred atoms long. What is not as appreciated is the deeper understanding of current flow, energy exchange and device operation that...
Lessons from Nanoelectronics (Q&A)
Q&A session from Lessons from Nanoelectronics.
Nanoelectronic Devices, With an Introduction to Spintronics
09 Sep 2010 | | Contributor(s):: Supriyo Datta, Mark Lundstrom
Nanoelectronic devices are at the heart of today's powerful computers and are also of great interest for many emerging applications including energy conversion, sensing and alternative computing paradigms. Our objective, however, is not to discuss specific devices or...
Nanostructured Electronic Devices: Percolation and Reliability
17 Sep 2009 | | Contributor(s):: Muhammad A. Alam
In this series of lectures introduces a simple theoretical framework for treating randomness and variability in emerging nanostructured electronic devices for wide ranging applications – all within an unified framework of spatial and temporal percolation. The problems considered involve...
Near-Equilibrium Transport: Fundamentals and Applications
Engineers and scientists working on electronic materials and devicesneed a working knowledge of "near-equilibrium" (also called "linear"or "low-field") transport. The term "working knowledge" meansunderstanding how to use theory in practice. Measurements ofresistivity, conductivity, mobility,...
NEMO5 Overview Presentation
17 Jul 2012 | | Contributor(s):: Tillmann Christoph Kubis, Michael Povolotskyi, Jean Michel D Sellier, James Fonseca, Gerhard Klimeck
This presentation gives an overview of the current functionality of NEMO5.
NEMO5 Tutorial 3: Models
17 Jul 2012 | | Contributor(s):: Jean Michel D Sellier
This tutorial presents the models implemented in NEMO5. A description on how the solvers interact with each other is reported along with the options of the various solvers. An example on how to make a simulation that involves strain calculations, Schroedinger wave functions calculations and an...
NEMO5 Tutorial 5A: Devi ce Simulation - Quantum Dots
This presentation introduces the capabilities of NEMO5 to simulate quantum dots.
Solar Cell Fundamentals
19 Aug 2011 | | Contributor(s):: Mark Lundstrom, J. L. Gray, Muhammad A. Alam
The modern solar cell was invented at Bell Labs in 1954 and is currently receiving renewed attention as a potential contribution to addressing the world's energy challenge. This set of five tutorials is an introduction to solar cell technology fundamentals. It begins with a broad overview of...
Solar Cells Lecture 1: Introduction to Photovoltaics
19 Aug 2011 | | Contributor(s):: Mark Lundstrom
An introduction to solar cells covering the basics of PN junctions, optical absorption, and IV characteristics. Key technology options and economic considers are briefly presented.