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2010 NCN@Purdue Summer School: Electronics from the Bottom Up
18 Jan 2011 |
Electronics from the Bottom Up seeks to bring a new perspective to electronic devices – one that is designed to help realize the opportunities that nanotechnology presents.
how to compute the potential relief of DWNT
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which tool is to be used if i want to compute the potential relief of an double wall nanotube? whats the difference between molecular dynamics simulation and ab initio calculation.
Addressing Molecular Dynamics Time-scale Issues to Study Atomic-scale Friction
12 Oct 2010 | | Contributor(s):: Ashlie Martini
This presentation will include an introduction to several accelerated molecular dynamics methods. However, particular focus will be given to parallel replica (ParRep) dynamics in which atomistic simulations are run parallel in time to extend their total duration. The ParRep method is based on the...
Tutorial 3: Materials Simulation by First-Principles Density Functional Theory
14 Sep 2010 | | Contributor(s):: Umesh V. Waghmare
This two-part lecture will provide an introduction to first-principles density functional theory based methods for simulation of materials, with a focus on determination of interatomic force constants and vibrational spectra of nano- structures and extended periodic materials.
Tutorial 3b: Materials Simulation by First-Principles Density Functional Theory II
28 Jun 2010 | | Contributor(s):: Benjamin P Haley, Nate Wilson, Chunyu Li, Andrea Arguelles, Eugenio Jaramillo, Alejandro Strachan
Build thermoplastic polymer chains and run LAMMPS to relax the chains and study mechanical properties
Ripples and Warping of Graphene: A Theoretical Study
19 May 2010 | | Contributor(s):: Umesh V. Waghmare
We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked with a low energy branch of phonons that exhibits quadratic dispersion at long wave-lengths. Many...
09 Nov 2009 | | Contributor(s):: Ashlie Martini, Jianguo Wu
Molecular dynamics simulation of atomic stick-slip friction
Learning Module: Atomic Picture of Plastic Deformation in Metals
The main goal of this learning module is to introduce students to the atomic-level processes responsible for plastic deformation in crystalline metals and help them develop a more intuitive...
Atomic Picture of Plastic Deformation in Metals: Overview Lecture
18 Dec 2009 | | Contributor(s):: Alejandro Strachan
The lecture describes the objectives of the learning module and provides the necessary background for the activities. We briefly discuss the following topics:mechanical response of macroscopic polycrystalline metals during tensile tests molecular dynamics simulations of materialsmechanical...
Atomic Picture of Plastic Deformation in Metals: Prelab Lecture
This lecture provides a detailed description of the activities the students will perform in the lab. We present a tutorial with step by step instructions on how to run MD simulations using the nano-Materials Simulation Toolkit.This lecture is part of the learning module Atomic Picture of Plastic...
Atomic Picture of Plastic Deformation in Metals: Lab Assignment Handout
19 Jan 2010 | | Contributor(s):: Alejandro Strachan
In this lab students will perform online molecular dynamics (MD) simulations of metallic nanowires deformed uniaxially and analyze the results...
Lecture 10: Non Equilibrium MD
05 Jan 2010 | | Contributor(s):: Ashlie Martini
Topics:Calculating transport coefficientShear flowPerturbation methods
Lecture 9: Dynamic Properties
Topics:Time correlation functionsEinstein relationsGreen-Kubo relations
Lecture 8: Static Properties
Topics:Thermodynamic propertiesEntropic propertiesStatic structure
Lecture 7: Initialization and Equilibrium
Topics:Initial positionsInitial velocitiesEvaluating equilibrium
Lecture 6: Neighbor Lists
Topics:Saving simulation timeVerlet listsCell lists
Lecture 5: Boundary Conditions
Topics:Fixed boundariesPeriodic boundary conditionsMinimum image distance
Lecture 4: Temperature Control
Topics:Velocity scalingHeat bath/reservoirStochastic methods