
Crystal Viewer Lab Exercise
28 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
A central problem in the investigation of material properties involves the examination of the underlying blocks that aggregate to form macroscopic bodies. These underlying blocs own a definite...
http://nanohub.org/resources/9236

Negative Differential Resistivity Exercise
28 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
In certain semiconductors such as GaAs and InP the average velocity as a function of field strength displays a maximum followed by a regime of decreasing velocity. Hilsum, Ridley, and Watkins...
http://nanohub.org/resources/9238

Exercise for MOSFET Lab: Device Scaling
28 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This exercise explores device scaling and how well devices are designed.
http://nanohub.org/resources/9221

Quantum Bound States Exercise
16 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
Exercise Background
Quantummechanical systems (structures, devices) can be separated into open systems and closed systems. Open systems are characterized with propagating or current carrying...
http://nanohub.org/resources/9191

Quantum Tunneling Exercise
16 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
Exercise Background
Tunneling is fully quantummechanical effect that does not have classical analog. Tunneling has revolutionized surface science by its utilization in scanning tunneling...
http://nanohub.org/resources/9193

Periodic Potentials Exercise
16 Jun 2010  Teaching Materials  Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska
In this exercise, various calculations of the electronic band structure of a onedimensional crystal are performed with the KronigPenney (KP) model. This model has an analytical solution and...
http://nanohub.org/resources/9195

Crystal Viewer Tool Verification (V 2.3.4)
15 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This text verifies the Crystal Viewer Tool by comparing the amount of dangling bonds at the silicon surface for [100], [110] and [111] crystal orientation. The crystal viewer results are in...
http://nanohub.org/resources/9156

Crystal Structures  Packing Efficiency Exercise
15 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
Consider the most efficient way of packing together equalsized spheres and stacking closepacked atomic planes in three dimensions. For example, if plane A lies beneath plane B, there are two...
http://nanohub.org/resources/9154

PCPBT Manual
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This is a manual for the PieceWise Constant Potential Barrier Tool.
http://nanohub.org/resources/9117

TightBinding Band Structure Calculation Method
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This set of slides describes on simple example of a 1D lattice, the basic idea behind the TightBinding Method for band structure calculation.
http://nanohub.org/resources/9122

Poisson Equation Solvers
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
There are two general schemes for solving linear systems:
Direct Elimination Methods, and
Iterative Methods.
All the direct methods are, in some sense, based on the standard Gauss...
http://nanohub.org/resources/9124

Poisson Equation Solvers  General Considerations
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
We describe the need for numerical modeling, the finite difference method, the conversion from continuous set to set of matrix equations, types of solvers for solving sparse matrix equations of...
http://nanohub.org/resources/9125

Conjugate Gradient Tutorial
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This is an extensive tutorial on the description and implementation of the basic conjugate gradient method and its variants.
http://nanohub.org/resources/9127

Multigrid Tutorial
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This set of slides describe the idea behind the multigrid method and its implementation.
http://nanohub.org/resources/9129

Crystal Structures
08 Jun 2010  Teaching Materials  Contributor(s): David K. Ferry, Dragica Vasileska, Gerhard Klimeck
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a basis, a set of atoms arranged in a particular way, and a...
http://nanohub.org/resources/9134

Crystal Directions and Miller Indices
08 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...
http://nanohub.org/resources/9136

Verification of the Validity of the PN Junction Tool
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
These simulations and comparisons with the depletion charge approximation prove the validity of the PN Junction tool.
http://nanohub.org/resources/9138

Solve a Challenge for a PN Diode
08 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska, Gerhard Klimeck
This is SOLVE A CHALLENGE PROBLEM for pndiodes.
http://nanohub.org/resources/9140

DriftDiffusion Modeling and Numerical Implementation Details
01 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
This tutorial describes the constitutive equations for the driftdiffusion model and implementation details such as discretization and numerical solution of the algebraic equations that result...
http://nanohub.org/resources/9092

Physical and Analytical Description of the Operation of a PN Diode
01 Jun 2010  Teaching Materials  Contributor(s): Dragica Vasileska
A detailed physical and analytical description of the operation of PN diodes is given.
vasileska.faculty.asu.edu
NSF
http://nanohub.org/resources/9094