Tags: diffusion

Resources (41-60 of 88)

  1. Illinois ECE 440 Solid State Electronic Devices, Lecture 16-17: Diffusion

    22 Oct 2009 | | Contributor(s):: Eric Pop

    So far:•Energy bands, Doping, Fermi levels•Drift (~n*v), diffusion (~dn/dx)•Einstein relationship (D/μ = kT/q)•“Boring” semiconductor resistors (either n- or p-type)•Majority/minority carriers with illuminationToday, our first “useful” device:•The P-N junction diode in equilibrium (external...

  2. Illinois ECE 440: Diffusion and Energy Band Diagram Homework

    28 Jan 2010 | | Contributor(s):: Mohamed Mohamed

    This homework covers Diffusion of Carriers, Built-in Fields and Metal semiconductor junctions.

  3. 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...

  4. 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...

  5. Iron Oxidation

    18 Aug 2019 | | Contributor(s):: Adam Powell

    During iron oxidation, calculate the oxide layer thickness over time, and compare to the case with 1% titanium added.

  6. Lecture 17: Diffusion - Part 1

    15 Apr 2008 | | Contributor(s):: Paul R Selvin

    Diffusion, Directed motors, Thermal motion, nerve synapse, Efficiency of Diffusion

  7. Lecture 20: Diffusion - Part2

    23 Apr 2008 | | Contributor(s):: Paul R Selvin

    Diffusion and bacteria moving, power consumed by bacteria, Introduction to Reynolds number, Where Bacteria Live, How E. Coli move and swim,

  8. Lecture 2: Quantum of Conductance: Resistance and uncertainty

    08 Sep 2010 |

  9. Lecture 3: Resistance-Ballistic to Diffusive

    28 Jul 2011 | | Contributor(s):: Mark Lundstrom

    The resistance of a ballistic conductor and concepts, such as the quantumcontact resistance, are introduced and discussed. The results are then generalized to treat transport all the way from the ballistic to diffusive regimes.

  10. Lecture 9: Dynamic Properties

    05 Jan 2010 | | Contributor(s):: Ashlie Martini

    Topics:Time correlation functionsEinstein relationsGreen-Kubo relations

  11. Linear Diffusion and Cell Signaling

    17 Apr 2020 | | Contributor(s):: NNCI Nano

    In this activity, students explore the concept of diffusion as a component of cell communication.  Specifically, students will explore how the rate of diffusion varies with distance and concentration gradient. They will use a pipet with water and dye to observe a macro-model of diffusion....

  12. mage:ic:kinetics1 - Diffusion in 1D and 3D

    10 Mar 2014 | | Contributor(s):: Michael L. Falk

    This module guides students through two analyses of diffusion problems using the COMSOL finite element software. Students are then asked to use what they have learned to guide the design of a drug delivery device.Disciplinary Goals: Understand mass transport in 1D and 3D, effects of boundary...

  13. Make a Microfluidic Device to Investigate Properties of Solutions

    07 Apr 2020 | | Contributor(s):: Greg Hair, NNCI Nano

    This lesson focuses on having students design and test a microfluidic device to investigate the properties of solutions. The lesson activities combine concepts learned in the previous semester (energy, frequency, wavelength, and bonding) together with the aforementioned concepts of solutions to...

  14. MATE 370 Virtual Lab: Exploring Diffusion through nanoHUB Defect- coupled and Concentration-dependent Diffusion Tools

    24 Sep 2020 | | Contributor(s):: Mohsen B Kivy, Crystal Ipong

    This lab explores the kinetics of solid-state diffusion using nanoHUB tools.

  15. Mixed Gas Diffusion Calculator

    28 Jun 2019 | | Contributor(s):: Julian C Umeh, Thomas A Manz

    Simulates the diffusion of a gas mixture onto a metal organic framework

  16. Molecular Dynamics Studies of Gaseous Transport

    05 Apr 2006 | | Contributor(s):: Ki-Ho Lee, Jason Myers, Susan Sinnott

    Carbon nanotubes (CNTs) have generated a great deal of interest due to their unique properties. In this study, we examine the transport properties of various nanotubes using REBO-MD to determine the effects of diameter and chirality on transport mode. Both oxygen and methane were diffused through...

  17. MSE 597GM Lecture 13: Diffusion Limitations I

    11 Oct 2012 | | Contributor(s):: R. Edwin García

  18. MSE 597GM Lecture 14: Diffusion Limitations II

    11 Oct 2012 | | Contributor(s):: R. Edwin García

  19. MSE 597GM Lecture 15: Diffusion Limitations III

    23 Oct 2012 | | Contributor(s):: R. Edwin García

  20. MSEN 201 Lecture 9.1: Diffusion - Steady State vs Transient

    13 Feb 2019 | | Contributor(s):: Patrick J Shamberger