Tags: quantum chemistry

Resources (1-20 of 22)

  1. Forces That Govern Life: On the Way to Understanding Intermolecular Interactions

    20 Jul 2017 | | Contributor(s):: Lyudmila V. Slipchenko

    This talk will overview our recent work on the Effective Fragment Potential (EFP) method. EFP is a model potential designed for describing non-covalent interactions. The absence of fitted parameters and a natural partitioning of the interaction energy into Coulomb, polarization, dispersion, and...

  2. Lecture 2: The Wigner Monte Carlo Method for Single-Body Quantum Systems

    18 Nov 2014 | | Contributor(s):: Jean Michel D Sellier

    In this lecture, Dr. Sellier discusses the Wigner Monte Carlo method applied to single-body quantum systems.

  3. Lecture 3: The Wigner Monte Carlo Method for Density Functional Theory

    18 Nov 2014 | | Contributor(s):: Jean Michel D Sellier

    In this lecture, Dr. Sellier discusses the Wigner Monte Carlo method in the framework of density functional theory (DFT).

  4. Lecture 4: The ab-initio Wigner Monte Carlo Method

    18 Nov 2014 | | Contributor(s):: Jean Michel D Sellier

    In this lecture, Dr. Sellier discusses the ab-initio Wigner Monte Carlo method for the simulation of strongly correlated systems.

  5. Lecture 5: Systems of Identical Fermions in the Wigner Formulation of Quantum Mechanics

    18 Nov 2014 | | Contributor(s):: Jean Michel D Sellier

    In this lecture, Dr. Sellier discusses about systems of indistinguishable Fermions in the Wigner formulation of quantum mechanics.

  6. Quantum-chemical Theory of Cumulenes - perspective molecular conductors for nanoelectronics

    07 Mar 2012 | | Contributor(s):: Yuri A Kruglyak

    The theory of pi-electronic structure is presented for molecules of organic cumulenes CnH4 which have two perpendicular subsystems of pi-AO. Elementary considerations from MO theoryshow stability of planar D2h conformations for cumulenes with an even number of carbon atoms andof turned D2d...

  7. Valence Shell Electron Pair Repulsion simulator

    06 Dec 2009 | | Contributor(s):: Baudilio Tejerina

    This tool calculates the optimal distribution of particles subject to a Coulombic potential on the surface of a sphere.

  8. ABINIT: First-Time User Guide

    09 Jun 2009 | | Contributor(s):: Benjamin P Haley

    This first-time user guide provides an introduction to using ABINIT on nanoHUB. We include a very brief summary of Density Functional Theory along with a tour of the Rappture interface. We discuss the default simulation (what happens if you don't change any inputs, and just hit "simulate") as...

  9. Optical and Thermodynamic properties of noble metal nanoparticles. Effect of chemical functionalization.

    04 May 2009 | | Contributor(s):: Baudilio Tejerina, George C. Schatz

    This laboratory is intended to introduce the student to the use of semiempirical electronic structure methods. In particular, the semiempirical methods will be applied to the study of metallic clusters and the interaction of the clusters with molecules such as pyridine. The reactivity of the...

  10. Facio

    25 May 2008 | | Contributor(s):: Masahiko Suenaga

    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 the...

  11. Northwestern University Initiative for Teaching Nanoscience

    12 Aug 2008 | | Contributor(s):: Baudilio Tejerina

    This package allows users to study and analyze of molecular properties using various electronic structure methods.

  12. Theoretical Electron Density Visualizer

    01 Jul 2008 | | Contributor(s):: Baudilio Tejerina

    TEDVis calculates and displays 3D maps of molecular ED and its derivatives from the wave function.

  13. UV/Vis Spectra simulator

    04 Mar 2008 | | Contributor(s):: Baudilio Tejerina

    This tool computes molecular electronic spectra.

  14. Calculating Resonances Using a Complex Absorbing Potential

    13 Mar 2008 | | Contributor(s):: Robin Santra

    The Siegert (or Gamow) wave function associated with a resonance state is exponentially divergent at large distances from the scattering target. A complex absorbing potential (CAP) provides a computationally simple and efficient technique for calculating the complex Siegert energy of a resonance...


    09 Oct 2007 | | Contributor(s):: Baudilio Tejerina, Jeff Reimers

    Semi-empirical Molecular Orbital calculations.

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

    13 Feb 2008 | | Contributor(s):: Jeffrey C Grossman, Elif Ertekin

    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...

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

    31 Jan 2008 | | Contributor(s):: Oleg Prezhdo

    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...

  18. ECE 495N F07 Homework 1 (Lectures 1-6)

    17 Oct 2007 | | Contributor(s):: Saptarshi Das

  19. The basics of quantum Monte Carlo

    15 Jun 2007 | | Contributor(s):: Lucas Wagner, Jeffrey C Grossman, Jeffrey B. Neaton

    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...

  20. Renormalization Group Theories of Strongly Interacting Electronic Structure

    20 Apr 2007 | | Contributor(s):: Garnet Chan, NCN at Northwestern University

    Our work is in the area of the electronic structure and dynamics of complex processes. We engage in developing new and more powerful theoretical techniques which enable us to describe strong electronic correlation problems.Of particular theoretical interest are the construction of fast...