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Tags: computational chemistry

Resources

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Online Presentations

  • 8.8 Ranking Yeganeh: MCW07 Modeling Charging-based ...

    MCW07 Modeling Charging-based Switching in Molecular Transport Junctions

    Type Online Presentations
    Contributor(s) Sina Yeganeh, Misha Galperin, Mark A. Ratner
    Date 05 Sep. 2007
    Avg. Rating 5.0 out of 5 stars  (1)
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    We will discuss several proposed explanations for the switching and negative differential resistance behavior seen in some molecular junctions. It is shown that a proposed polaron model is successful in predicting both hysteresis and NDR behavior, and the model is elaborated with image charge ...

  • 8.7 Ranking Wagner: The basics of quantum Monte Carlo

    The basics of quantum Monte Carlo

    Type Online Presentations
    Contributor(s) Lucas Wagner, Jeffrey C Grossman, Jeffrey B. Neaton
    Date 18 Jun. 2007
    Avg. Rating 4.5 out of 5 stars  (3)
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    Quantum Monte Carlo is a highly accurate method to approximately solve the Schrodinger equation. I explain quantum Monte Carlo in a way that should be accessible to someone who is somewhat familiar with quantum mechanics. The discussion is mostly conceptual.Lucas Wagner is a postdoctoral ...

  • 7.4 Ranking Eisenberg: Ionic Selectivity in Channels: ...

    Ionic Selectivity in Channels: complex biology created by the balance of simple physics

    Type Online Presentations
    Contributor(s) Bob Eisenberg
    Date 05 Jun. 2008
    Avg. Rating 4.0 out of 5 stars  (2)
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    An important class of biological molecules—proteins called ionic channels—conduct ions (like Na+ , K+ , Ca2+ , and Cl− ) through a narrow tunnel of fixed charge (‘doping’). Ionic channels control the movement of electric charge and current across biological membranes and so play a role ...

  • 6.8 Ranking Head-Gordon: Perspectives on Computational ...

    Perspectives on Computational Quantum Chemistry

    Type Online Presentations
    Contributor(s) Martin P. Head-Gordon
    Date 20 Dec. 2007
    Avg. Rating 0.0 out of 5 stars  (0)
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    This presentation was one of 13 presentations in the one-day forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of computational science and engineering.

  • 6.4 Ranking Neaton: MCW07 Electronic Level Alignment ...

    MCW07 Electronic Level Alignment at Metal-Molecule Contacts with a GW Approach

    Type Online Presentations
    Contributor(s) Jeffrey B. Neaton
    Date 05 Sep. 2007
    Avg. Rating 0.0 out of 5 stars  (0)
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    Most recent theoretical studies of electron transport in single-molecule junctions rely on a Landauer approach, simplified to treat electron-electron interactions at a mean-field level within density functional theory (DFT). While this framework has proven relatively accurate for certain systems, ...

  • 5.9 Ranking Prezhdo: Dynamics on the Nanoscale: ...

    Dynamics on the Nanoscale: Time-domain ab initio studies of quantum dots, carbon nanotubes and molecule-semiconductor interfaces

    Type Online Presentations
    Contributor(s) Oleg Prezhdo, NCN SLC@Northwestern
    Date 01 Feb. 2008
    Avg. Rating 0.0 out of 5 stars  (0)
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    Device miniaturization requires an understanding of the dynamical response of materials on the nanometer scale. A great deal of experimental and theoretical work has been devoted to characterizing the excitation, charge, spin, and vibrational dynamics in a variety of novel materials, including ...

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Teaching Materials

  • 10.0 Ranking Grossman: Computational Nanoscience, Lecture ...

    Computational Nanoscience, Lecture 4: Geometry Optimization and Seeing What You're Doing

    Type Teaching Materials
    Contributor(s) Jeffrey C Grossman, Elif Ertekin
    Date 13 Feb. 2008
    Avg. Rating 5.0 out of 5 stars  (1)
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    In this lecture, we discuss various methods for finding the ground state structure of a given system by minimizing its energy. Derivative and non-derivative methods are discussed, as well as the importance of the starting guess and how to find or generate good initial structures. We also briefly ...

  • 9.9 Ranking Ertekin: Computational Nanoscience, Lecture ...

    Computational Nanoscience, Lecture 20: Quantum Monte Carlo, part I

    Type Teaching Materials
    Contributor(s) Elif Ertekin, Jeffrey C Grossman
    Date 20 May. 2008
    Avg. Rating 5.0 out of 5 stars  (1)
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    This lecture provides and introduction to Quantum Monte Carlo methods. We review the concept of electron correlation and introduce Variational Monte Carlo methods as an approach to going beyond the mean field approximation. We describe briefly the Slater-Jastrow expansion of the wavefunction, and ...

  • 9.8 Ranking Grossman: Computational Nanoscience, Lecture ...

    Computational Nanoscience, Lecture 21: Quantum Monte Carlo, part II

    Type Teaching Materials
    Contributor(s) Jeffrey C Grossman, Elif Ertekin
    Date 20 May. 2008
    Avg. Rating 5.0 out of 5 stars  (1)
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    This is our second lecture in a series on Quantum Monte Carlo methods. We describe the Diffusion Monte Carlo approach here, in which the approximation to the solution is not restricted by choice of a functional form for the wavefunction. The DMC approach is explained, and the fixed node ...

  • 9.7 Ranking Ertekin: Computational Nanoscience, Pop-Quiz

    Computational Nanoscience, Pop-Quiz

    Type Teaching Materials
    Contributor(s) Elif Ertekin, Jeffrey C Grossman
    Date 20 May. 2008
    Avg. Rating 5.0 out of 5 stars  (1)
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    This quiz summarizes the most important concepts which have covered in class so far related to Molecular Dynamics, Classical Monte Carlo Methods, and Quantum Mechanical Methods.University of California, Berkeley

  • 9.7 Ranking Ertekin: Computational Nanoscience, ...

    Computational Nanoscience, Pop-Quiz Solutions

    Type Teaching Materials
    Contributor(s) Elif Ertekin, Jeffrey C Grossman
    Date 20 May. 2008
    Avg. Rating 5.0 out of 5 stars  (1)
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    The solutions to the pop-quiz are given in this handout.University of California, Berkeley

Downloads

  • 10.0 Ranking Xie: Molecular Workbench: An Interface ...

    Molecular Workbench: An Interface to the Molecular World

    Type Downloads
    Contributor(s) Charles Xie
    Date 31 Aug. 2006
    Avg. Rating 5.0 out of 5 stars  (2)
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    The Molecular Workbench software is a free, open-source modeling and authoring program specifically designed for use in science education. Powered by a set of real-time molecular simulation engines that compute and visualize the motion of particles interacting through force fields, in both 2D and ...

  • 5.5 Ranking Suenaga: Facio

    Facio

    Type Downloads
    Contributor(s) Masahiko Suenaga
    Date 27 May. 2008
    Avg. Rating 0.0 out of 5 stars  (0)
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    Facio is a 3D-graphics program for molecular modeling and visualization of quantum chemical calculations(GAMESS and Gaussian). It is a GUI for FMO (Fragment MO) calculation. Selected features include: (1) From a PDB file, create GAMESS/FMO input with 4 mouse clicks. (2) Manual fragmentation for ...

Workshops

  • 10.0 Ranking Lundstrom: Excellence in Computer Simulation

    Excellence in Computer Simulation

    Type Workshops
    Contributor(s) Mark Lundstrom, Jeffrey B. Neaton, Jeff Grossman
    Date 19 Dec. 2007
    Avg. Rating 0.0 out of 5 stars  (0)
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    Computational science is frequently labeled as a third branch of science - equal in standing with theory and experiment, and computational engineering is now an essential component of technology development and manufacturing. The successes of computational science and engineering (CSE) over the ...

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