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Dissertation Wilfried Wessner
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Contents
1. Introduction
1.1 TCAD Tools
1.1.1 Numerical Computing
1.1.2 Typical Computational Analysis Cycle
1.2 Mesh Adaptation
1.2.1 Related Mesh Generation Developments
1.2.2 Related Mathematical Modeling Developments
1.2.3 Mesh Adaptation Remark
1.3 Outline of this Thesis
2. Mesh Refinement in General
2.1 General Definitions
2.1.1
-Simplex
2.1.2 Standard
-Simplex
2.1.3
-Face
2.1.4 Convex Hull
2.1.5 Covering Up
2.1.6 Triangulation
2.1.7 Mesh
2.1.8 Conformal Mesh
2.1.9 Mesh Element
2.2 Tetrahedral Partitioning Methods
2.2.1 Vertex Insertion Methods
2.2.2 Tetrahedral Bisection
2.2.3 Recursive Tetrahedral Bisection
2.3 Anisotropy
2.3.1 Anisotropic Metric
2.3.2 Anisotropic Tetrahedral Bisection
3. Data Driven Refinement Methods
3.1 Some Words on Data
3.1.1 Tensors
3.1.2 Data
-Face Relation
3.1.3 Interpolation Functions on the Standard
-Simplex
3.2 Layer Refinement Method
3.2.1 Laplace Equation
3.2.2 Plate Capacitor
3.2.3 Metric Function
3.2.4 Propaedeutic Example
3.3 Gradient Refinement Method
3.3.1 Gradient Field
3.3.2 Propaedeutic Example
3.4 Hessian Refinement Method
3.4.1 Least Squares Fitting of the Model Function
3.4.2 Propaedeutic Example
3.5 Two Examples
3.5.1 Non-Planar Surface
3.5.2 EEPROM Cell
4. Mesh Refinement for Diffusion
4.1 Error Estimation
4.2 Propaedeutic Example
4.3 A Further Diffusion Example
5. Dynamic Mesh Adaptation for Simulation of Electromigration
5.1 Electromigration in a Nutshell
5.2 Interface Mesh Modeling
5.2.1 Explicit Interface
5.2.2 Implicit Interface
5.2.3 Diffuse Interface Model
5.2.4 Refined Diffuse Interface
5.2.5 Hierarchical Mesh Refinement-Coarsement Scheme
5.3 Example
6. Mesh Refinement for Full Band Monte Carlo Simulation
6.1 Geometric Properties of the First Brillouin Zone
6.2 Geometric Properties of the Irreducible Wedge
6.3 Silicon Band Structure Models
6.3.1 Analytical Approximations
6.3.2 Full Band Approach
6.4 k-Space Mesh Generation
6.4.1 Cubic Grid Based Meshes
6.4.2 Unstructured Tetrahedral Meshes
6.4.3 Resulting Unstructured k-Space Tessellation
6.5 Examples
6.5.1 Density of States Example
6.5.2 Average Kinetic Energy Example
6.5.3 Electron Velocity Example
7. Summary and Outlook
7.1 Summary
7.2 Outlook
A. Principal Component Analysis
A.1 Statistical Background
A.1.1 Mean
A.1.2 Standard Deviation
A.1.3 Covariance and Covariance Matrix
A.1.4 Eigendecomposition
A.2 PCA of a Tetrahedron
A.3 Glyph Visualization
B. Mathematical Goodies
B.1 Euler's Rotation Theorem
B.2 Least Squares Approximation
B.3 Volume Integral
B.3.1 Gaussian Quadrature
B.3.2 Integral Transformation
B.3.3 Legendre Polynomials
B.3.4 Numerical Quadrature Library
Bibliography
Own Publications
List of Figures
List of Tables
Curriculum Vitae
Next:
List of Symbols and
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Dissertation Wilfried Wessner
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Danksagung
Wilfried Wessner: Mesh Refinement Techniques for TCAD Tools