
ECE 695A Lecture 12R: Review Questions
08 Feb 2013   Contributor(s):: Muhammad Alam
Review Questions:Explain the difference between local field and global field within an oxide. Explain physically why electric field decreases bond strength.How does the dissociation process becomes nonArrhenius?Do you think the diffusion and repassivation will also become nonArrhenius when...

ECE 595E Lecture 12: Applications of FFT
08 Feb 2013   Contributor(s):: Peter Bermel
Outline:Recap from FridayReal FFTsMultidimensional FFTsApplications:Correlation measurementsFilter diagonalization method

ECE 595E Lecture 11: Fast Fourier Transforms
08 Feb 2013   Contributor(s):: Peter Bermel
Outline:Recap from WednesdayFourier AnalysisScalings and SymmetriesSampling TheoremDiscrete Fourier TransformsNaïve approachDanielsonLanczos lemmaCooleyTukey algorithmExamples

ECE 695A Lecture 9R: Review Questions
08 Feb 2013   Contributor(s):: Muhammad Alam
Review Questions:Does NBTI powerexponent depend on voltage or temperature?Do you expect the NBTI powerexponent to be larger or smaller if trapping is important?How does one know that the diffusing species is neutral?How would the timeexponent different for a surround gate MOSFET vs. planar...

ECE 695A Lecture 11: Temperature Dependence of NBTI
07 Feb 2013   Contributor(s):: Muhammad Alam
Outline:Review: Temperature activation & NBTITemperature dependent forward/reverse ratesTemperature dependence of diffusion coefficientMaterial dependence of activation energyConclusion

ECE 695A Lecture 10: NBTI Time Dependence  Frequency and Duty Cycle Dependencies
06 Feb 2013   Contributor(s):: Muhammad Alam
Outline:NBTI stress and relaxation by RD modelFrequency independence and lifetime projectionDuty cycle dependenceThe magic of measurementConclusions

ECE 695A Lecture 9: NBTI Time Dependence  Stress Phase
06 Feb 2013   Contributor(s):: Muhammad Alam
Outline:Background: Timedependent degradationThe ReactionDiffusion modelApproximate solution to RD model in stress phaseDegradation free transistorsConclusions

ECE 595E Lecture 9: Programming for Linear Algebra
01 Feb 2013   Contributor(s):: Peter Bermel
Outline:Recap from FridayApplication ExamplesElectrostatic potential (Poisson’s equation)1D array of charge2D grid of chargeArrays of interacting spins1D interaction along a chain2D nearestneighbor coupling

ECE 595E Lecture 10: Solving Quantum Wavefunctions
01 Feb 2013   Contributor(s):: Peter Bermel
Outline:Recap from MondaySchrodinger’s equationInfinite & Finite Quantum WellsKronigPenney modelNumerical solutions:Real spaceFourier space

ECE 695A Lecture 6: Defects in the Bulk and at Interfaces
01 Feb 2013   Contributor(s):: Muhammad Alam
Outline:Strain in materials/origin of defectsExamples: bulk defectsExamples: interface defectsMeasurementsConclusions

ECE 695A Lecture 8: Phenomenological Observations for NBTI
01 Feb 2013   Contributor(s):: Muhammad Alam
Outline:Qualitative observationsTime, voltage, temperature dependenciesMaterial dependenceCircuit implications

ECE 695A Lecture 8R: Review Questions
01 Feb 2013   Contributor(s):: Muhammad Alam
What is the distinction between BTI and NBTI phenomena?What does it mean that a process is thermally activated?What is the difference between parametric failure and catastrophic failure? Give examples. What are the timecharacteristics of trapping, BTI, and NBTI?Which device will have poorer...

ECE 695A Lecture 5: Amorphous Material/Interfaces
29 Jan 2013   Contributor(s):: Muhammad Alam
Outline:Amorphous vs. crystalline materialsDefectfree amorphous materialOrigin of defects (Maxwell’s relation)Conclusions

ECE 595E Lecture 8: Eigenvalues
29 Jan 2013   Contributor(s):: Peter Bermel
Outline:Recap from WednesdayEigenproblem Solution TechniquesPower MethodsInverse IterationAtomic TransformationsFactorization Methods

ECE 595E Lecture 7: Optimization and Eigenvalues
29 Jan 2013   Contributor(s):: Peter Bermel

ECE 595E Lecture 6: Finding Special Values
29 Jan 2013   Contributor(s):: Peter Bermel
Outline:Recap from WednesdayRoot FindingBisectionNewtonRaphson methodBrent’s methodOptimizationGolden Section SearchBrent’s MethodDownhill SimplexConjugate gradient methodsMultiple level, single linkage (MLSL)

ECE 695A Lecture 7: Trapping in Preexisting Traps
29 Jan 2013   Contributor(s):: Muhammad Alam
Outline:Preexisting vs. stressinduced trapsVoltageshift in preexisting bulk/interface trapsRandom Telegraph Noise, 1/f noiseConclusion

ECE 695A Lecture 7A: Appendix  Theory of Stochastic Distribution
29 Jan 2013   Contributor(s):: Muhammad Alam
Supplemental information for Lecture 7: Trapping in Preexisting Traps

ECE 695A Lecture 7R: Review Questions
29 Jan 2013   Contributor(s):: Muhammad Alam
Review Questions:Why are there more types of defects in crystals than in amorphous material?From the perspective of Maxwell’s relation, how does H reduce defect density?Why is HfO2 so defective  and why do you want to use it?Which type of traps involve faster trapping/detrapping, Pb center or...

ECE 595E Lecture 5: Linear Algebra
18 Jan 2013   Contributor(s):: Peter Bermel
Outline:Recap from MondayOverview: Computational Linear AlgebraGaussian EliminationLU DecompositionSingular Value DecompositionSparse MatricesQR Decomposition