Tags: materials

Online Presentations (1-20 of 88)

  1. DragonflyTV Nano – Using the Power of Television to Introduce Middle School Children to Nanotechnology

    15 Jan 2009 | | Contributor(s):: Richard Hudson, Joan Freese, Angie Prindle, Lisa Regalla

    DragonflyTV is a PBS science series for children, broadcast nationwide and on the internet. DragonflyTV models authentic science inquiry through its unique approach: In each episode, ordinary kids conduct their own inquiry-based investigations, modeling the inquiry process and communicating the...

  2. Exascale Co-design for Materials in Extreme Environments: Heterogeneous Algorithms for Heterogeneous Architectures

    30 May 2012 | | Contributor(s):: Timothy C. Germann

    Computational materials scientists have been among the earliest and heaviest users of leadership-class supercomputers. The codes and algorithms which have been developed span a wide range of physical scales and have been useful not only for gaining scientific insight, but also as testbeds for...

  3. Illinois Center for Cellular Mechanics: Discovery through the Computational Microscope

    11 Feb 2009 | | Contributor(s):: Klaus Schulten

    Computational MicroscopeAll-atom molecular dynamics simulations have become increasingly popular as a toolto investigate protein function and dynamics. However, researchers are usuallyconcerned about the short time scales covered by simulations, the apparentimpossibility to model large and...

  4. Illinois ECE 598EP Lecture 1 - Hot Chips: Atoms to Heat Sinks

    29 Jan 2009 | | Contributor(s):: Eric Pop

    IntroductionContent: The Big Picture Another CPU without a Heat Sink Thermal Management Methods Impact on People and Environment Packaging cost IBM S/390 refrigeration and processor packaging Intel Itanium and Pentium 4packaging Graphics Cards Under/Overclocking Environment A More Detailed Look...

  5. Illinois ECE 598EP Lecture 3.1 - Hot Chips: Electrons and Phonons

    11 Feb 2009 | | Contributor(s):: Eric Pop, Omar N Sobh

    Electrons and Phonons

  6. Illinois MatSE 280 Introduction to Engineering Materials, Lecture 1: Materials: Their Properties and Failures

    14 Aug 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    "Because without materials, there is no engineering"In this lecture we will discuss the following:- Units of Length- Six Major Classes of Materials- Periodic Table of Elements- Properties of Materials- Materials Science and Engineering in a Nutshell

  7. Illinois MatSE 280 Introduction to Engineering Materials, Lecture 2: Atomic Structure and Interatomic Bonding

    18 Aug 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Refortify your chemistry - Atomic scale structuresGoals Define basic concepts: Filling of Atomic Energy Levels: Pauli Exclusion Principle Atomic Orbitals (s-, p-, d-, and f- type electrons) Types of Bonding between Atoms The Periodic Table (and solid state structures) Bond Energy Curves Describe...

  8. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 3 Part 1: Structure of Metals and Ceramics

    19 Sep 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Structures of Metals and CeramicsGoals Define basic terms and give examples of each: Lattice Basis Atoms (Decorations or Motifs) Crystal Structure Unit Cell Coordination Numbers Describe hard-sphere packing and identify cell symmetry Crystals density: the mass per volume (e.g. g/cm3) Linear...

  9. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 3 Part 2: Structure of Ceramics

    21 Sep 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Structure of CeramicsIssues to Address...Structures of ceramic materials: How do they differ from that of metals?Define basic terms and give examples of each: Lattice Basis Atoms (Decorations or Motifs) Crystal Structure Unit Cell Coordination Numbers Describe hard-sphere packing and identify...

  10. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 3 Part 3: Crystallographic Points, Directions, and Planes

    22 Sep 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Crystallographic Points, Directions, and PlanesIssues to Address...How to define points, directions, planes, as well aslinear, planar, and volume densitiesDefine basic terms and give examples of each: Points (atomic positions) Vectors (defines a particular direction - plane normal) Miller...

  11. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 3 Part 4: Structures via Diffusion

    28 Sep 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Structures via DiffractionGoals Define basic ideas of diffraction (using x-ray, electrons, or neutrons, which, although they are particles, they can behave as waves) and show how to determine: Crystal Structure Miller Index Planes and Determine the Structure Identify cell symmetry Learning...

  12. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 4 : Polymer Structures

    04 Oct 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Issues to Address...What are the basic Classification? Monomers and chemical groups? Nomenclature? Polymerization methods? Molecular Weight and Degree of Polymerization? Molecular Structures? Crystallinity? Microstructural features?

  13. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 5 - Part 1 : Imperfections in Solids

    14 Nov 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Imperfections in Solids ISSUES TO ADDRESS... What types of defects arise in solids? Describe them Can the number and type of defects be varied and controlled? How do defects affect material properties? Are defects undesirableGiven masses or atomic weights of two or more elements in an alloy,...

  14. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 5 - Part 2 : Line Defects, Dislocations and their Scale

    14 Nov 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Imperfections in Solids (Continue)Content: Line Defects: Dislocations and their Scale Line Defects: Dislocations Incremental Slip and Bond Breaking Edge Dislocations Exiting Crystal Form Steps Dislocations: Screw, Edge and Mixed (in handout) Formation of Steps from Screw and Edge Dislocations...

  15. Illinois MATSE 280 Introduction to Engineering Materials, Lecture 6: Diffusion in Solids

    19 Nov 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Diffusion in SolidsISSUES TO ADDRESS... How does diffusion occur? How can the rate of diffusion be predicted forsome simple cases? How does diffusion depend on structure and temperatureContent Diffusion- Steady and Non-Steady State Simple Diffusion Inter-diffusion Self-diffusion...

  16. Illinois MatSE 280 Introduction to Engineering Materials, Lecture 7: Mechanical Properties

    15 Dec 2008 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Mechanical PropertiesWhy Mechanical Properties? Need to design materials that will withstand applied load and in-service uses for ... Space exploration, Bridges for autos and people, skyscrapers, MEMS devices, Space elevator?Content: Stress and strain Elastic and Plastic Deformation of Metals...

  17. Illinois MatSE 280 Introduction to Engineering Materials, Lecture 9: Mechanical Failures

    09 Jan 2009 | | Contributor(s):: Duane Douglas Johnson, Omar N Sobh

    Mechanical Failure: temperature, stress, cyclic and loading effectISSUES TO ADDRESS... How do cracks that lead to failure form? How is fracture resistance quantified? How do the fracture resistances of the different material classes compare? How do we estimate the stress to fracture? How do...

  18. Illinois PHYS 466, Lecture 10: Sampling

    19 Mar 2009 | | Contributor(s):: David M. Ceperley, Omar N Sobh

    Fundamentals of Monte CarloWhat is Monte Carlo? Named at Los Alamos in 1940’s after the casino. Any method which uses (pseudo)random numbers> as an essential part of the algorithm. Stochastic - not deterministic! A method for doing highly dimensional integrals by sampling the integrand. Often a...

  19. Illinois PHYS 466, Lecture 11: Importance Sampling

    13 Mar 2009 | | Contributor(s):: David M. Ceperley

    Importance samplingToday We will talk about the third option: Importance sampling and correlated samplingContent: Importance Sampling Finding Optimal p*(x) for Sampling Example of importance sampling What are allowed values of a? What does infinite variance look like? General Approach to...

  20. Illinois PHYS 466, Lecture 12: Random Walks

    27 Mar 2009 | | Contributor(s):: David M. Ceperley

    Random Walks Today we will discuss Markov chains (random walks), detailed balance and transition rules. These methods were introduced by Metropolis et al. in 1953 who applied it to a hard sphere liquid. It is one of the most powerful and used algorithmsContent: Equation of State Calculations by...