ECE 695E Lecture 14: Physics-based Machine Learning
24 Jan 2019 | Online Presentations | Contributor(s): Muhammad A. Alam
Outline Why and what of physics-based machine learning Example 1: Dropping a ball in the real world Example 2: Lake temperature distribution Approach 2: Structural Equation Modeling Conclusions
ECE 695E Lecture 13: Deep Learning, Karnaugh Mapping, and Unsupervised Classification
OutlineIntroductionA two input, single and multiple perceptron problemBackpropagation and coefficient fittingMachine learning and Karnaugh mappingOther forms of Machine Learning (Unsupervised, optical, quantum)Conclusions
ECE 695E Lecture 12: Basics of Machine Learning
OutlineMachine learning is an algorithm for âfastâ curve fittingMachine learning and classification: Example 1Machine learning and classification: Example 2 Any function can be represented by machine learning approach Conclusions
ECE 695E Lecture 10: Big Data Classification by Principal Component Analysis
Outline Introduction Why do we need reduction in data dimension Theory of Principle Component Analysis Applications of Principle Component Analysis Conclusions
ECE 695A Reliability Physics of Nanotransistors
17 Jan 2013 | Courses | Contributor(s): Muhammad Alam
This course will focus on the physics of reliability of small semiconductor devices. In traditional courses on device physics, the students learn how to compute current through a device when a voltage is applied.
ECE 695A Lecture 9R: Review Questions
08 Feb 2013 | Online Presentations | Contributor(s): Muhammad Alam
Review Questions:Does NBTI power-exponent depend on voltage or temperature?Do you expect the NBTI power-exponent to be larger or smaller if trapping is important?How does one know that the diffusing species is neutral?How would the time-exponent different for a surround gate MOSFET vs. planar...
ECE 695A Lecture 9: NBTI Time Dependence -- Stress Phase
06 Feb 2013 | Online Presentations | Contributor(s): Muhammad Alam
Outline:Background: Time-dependent degradationThe Reaction-Diffusion modelApproximate solution to R-D model in stress phaseDegradation free transistorsConclusions
ECE 695A Lecture 8R: Review Questions
01 Feb 2013 | Online Presentations | 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 time-characteristics of trapping, BTI, and NBTI?Which device will have poorer NBTI...
ECE 695A Lecture 8: Phenomenological Observations for NBTI
Outline:Qualitative observationsTime, voltage, temperature dependenciesMaterial dependenceCircuit implications
ECE 695A Lecture 7R: Review Questions
29 Jan 2013 | Online Presentations | Contributor(s): Muhammad Alam
Review Questions:Why are there more types of defects in crystals than in amorphous material?From the perspective of Maxwellâs 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 695A Lecture 7A: Appendix - Theory of Stochastic Distribution
Supplemental information for Lecture 7: Trapping in Pre-existing Traps
ECE 695A Lecture 7: Trapping in Pre-existing Traps
Outline:Pre-existing vs. stress-induced trapsVoltage-shift in pre-existing bulk/interface trapsRandom Telegraph Noise, 1/f noiseConclusion
ECE 695A Lecture 6: Defects in the Bulk and at Interfaces
Outline:Strain in materials/origin of defectsExamples: bulk defectsExamples: interface defectsMeasurementsConclusions
ECE 695A Lecture 5R: Review Questions
12 Feb 2013 | Online Presentations | Contributor(s): Muhammad Alam
Review Questions:What is the difference between coordination and composition?Is periodicity essential for a defect-free structure?Why canât the amorphous material have arbitrary ring distribution?How does Temperature enter in Maxwellâs relationship?Do you expect more or less defect for...
ECE 695A Lecture 5: Amorphous Material/Interfaces
Outline:Amorphous vs. crystalline materialsDefect-free amorphous materialOrigin of defects (Maxwellâs relation)Conclusions
ECE 695A Lecture 4: Structures and Defects in Crystals
17 Jan 2013 | Online Presentations | Contributor(s): Muhammad Alam
Outline:Background informationDefect-free crystal structuresDefects in crystalsConclusions
ECE 695A Lecture 40: Failure Analysis and Epilogue
07 May 2013 | Online Presentations | Contributor(s): Muhammad Alam
Outline:Plan experiments, test carefully, and then post-mortemSummary: NBTI, HCI, TDDB, RadiationSummary: Measurement and Data AnalysisSummary: Why I work on this fieldConclusion
ECE 695A Lecture 3: Reliability as a Threshold Problem
Outline:Reliability as a Threshold Problem: Empirical vs. Physical ModelsâBlind Fish in a Waterfallâ as a prototype for Accelerated Testing/Statistical distributionFour elements of Physical ReliabilityConclusions
ECE 695A Lecture 39-1R: Review Questions
01 May 2013 | Online Presentations | Contributor(s): Muhammad Alam
Review Questions:What is the difference between hard and soft error?What is typical charge loss mechanism for ZRAM ?The soft error in Flash memory is different from that of ZRAM. Explain.How do people accelerate radiation induced damage? If carrier relaxation was faster than thermionic emission...
ECE 695A Lecture 39-1: Radiation and Devices I
Outline:Introduction to ZRAMSoft Errors in Zero-capacitor RAMSoft Errors in in Flash memoriesHard Errors and Anomalous leakage in Flash memoryConclusions
ECE 695A Lecture 38R: Review Questions
29 Apr 2013 | Online Presentations | Contributor(s): Muhammad Alam
ECE 695A Lecture 38: Charge Generation by Particles
ECE 695A Lecture 37R: Review Questions
20 Apr 2013 | Online Presentations | Contributor(s): Muhammad Alam
Review Questions:Why is SOI more radiation hard compared to bulk devices? What do you feel about radiation hardness of FINFET?What type of radiation issues could arise for thin-body devices like FINFET?What is error correction code? Why does it correct for MBU?What is the difference between SEE...
ECE 695A Lecture 37: Radiation Induced Damage â An overview
Outline:Introduction and short history of radiation damageRadiation damage in various types of componentsSources of radiationA basic calculation and simulation approachesConclusions