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Quantum mechanics (QM), also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic scales, the so-called quantum realm. In advanced topics of QM, some of these behaviors are macroscopic and only emerge at very low or very high energies or temperatures.
Learn more about quantum dots from the many resources on this site, listed below. More information on Quantum mechanics can be found here.
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...
Application-driven Co-Design: Using Proxy Apps in the ASCR Materials Co-Design Center
31 May 2012 | | Contributor(s):: Jim Belak
Computational materials science is performed with a suite of applications that span the quantum mechanics of interatomic bonding to the continuum mechanics of engineering problems and phenomenon specific models in between. In this talk, we will review this suite and the motifs used in each of...
Basics of Quantum Mechanics
01 Jun 2010 | | Contributor(s):: Dragica Vasileska
Classical vs. Quantum physics, particle-wave duality, postulates of quantum mechanics
Bringing Quantum Mechanics to Life: From Schrödinger's Cat to Schrödinger's Microbe
01 Nov 2016 | | Contributor(s):: Tongcang Li
In this talk, I will first give a brief introduction to basic concepts in quantum mechanics and the Schrödinger's cat thought experiment. I will then review developments in creating quantum superposition and entangled states and the realization of quantum teleportation. Non-trivial quantum...
09 Oct 2007 | | Contributor(s):: Baudilio Tejerina, Jeff Reimers
Semi-empirical Molecular Orbital calculations.
Computational Nanoscience, Lecture 13: Introduction to Computational Quantum Mechanics
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30 Apr 2008 | | Contributor(s):: Jeffrey C Grossman, Elif Ertekin
In this lecture we introduce the basic concepts that will be needed as we explore simulation approaches that describe the electronic structure of a system.
Computational Nanoscience, Lecture 20: Quantum Monte Carlo, part I
15 May 2008 | | Contributor(s):: Elif Ertekin, Jeffrey C Grossman
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,...
Computational Nanoscience, Lecture 21: Quantum Monte Carlo, part II
15 May 2008 | | Contributor(s):: Jeffrey C Grossman, Elif Ertekin
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...
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...
Development of the ReaxFF reactive force fields and applications to combustion, catalysis and material failure
29 Jul 2011 | | Contributor(s):: Adri van Duin
This lecture will describe how the traditional, non-reactive FF-concept can be extended for application including reactive events by introducing bond order/bond distance concepts. Furthermore, it will address how these reactive force fields can be trained against QM-data, thus greatly enhancing...
Dynamics of Quantum Fluids: Path integral and Semiclassical Methods
21 May 2008 | | Contributor(s):: Nancy Makri
The interplay of many-body nonlinear interactions and quantum mechanical effects such as zero-point motion or identical particle exchange symmetries lead to intriguing phenomena in low-temperature fluids, some of which remain poorly understood. Recent advances in theory and methodology have...
E304 L3.1.2: Nanoscale Physics - Planck's Contribution to Quantum Mechanics
26 Feb 2016 |
E304 L5.2.1: Nanomechanics - Quantum Mechanics of Oscillation
29 Mar 2016 | | Contributor(s):: Elena Nicolescu Veety
ECE 606 Lecture 2: Quantum Mechanics
31 Aug 2012 | | Contributor(s):: Gerhard Klimeck
ECE 606 Lecture 3: Elements of Quantum Mechanics
28 Jan 2009 | | Contributor(s):: Muhammad A. Alam
Outline:Why do we need quantum physicsQuantum conceptsFormulation of quantum mechanicsConclusions
ECE 606 Lecture 4: Periodic Potentials Solutions of Schrödinger's Equation
14 Sep 2012 | | Contributor(s):: Gerhard Klimeck
ECE 606 Lecture 4: Solution of Schrodinger Equation
04 Feb 2009 | | Contributor(s):: Muhammad A. Alam
Outline:Time-independent Schrodinger EquationAnalytical solution of toy problemsBound vs. tunneling statesConclusionsAdditional Notes: Numerical solution of Schrodinger Equation
ECE 612 Lecture 4: Polysilicon Gates/QM Effects
12 Sep 2008 | | Contributor(s):: Mark Lundstrom
Outline: 1) Review, 2) Workfunctionof poly gates,3) CV with poly depletion,4) Quantum mechanics and VT,5) Quantum mechanics and C,6) Summary.
Electrons in Two Dimensions: Quantum Corrals and Semiconductor Microstructures
04 Dec 2007 | | Contributor(s):: Eric J. Heller
The images generated by a scanning tunneling microscope are iconic. Some of the most famous are Don Eigler’s quantum corrals, which reveal not only the guest atoms on a surface but especially the interference patterns of electrons shuttling back and forth along the surface. To understand the...
Finite Height Quantum Well: an Exercise for Band Structure
31 Jan 2008 | | Contributor(s):: David K. Ferry
Use the Resonant Tunneling Diodes simulation tool on nanoHUB to explore the effects of finite height quantum wells.Looking at a 2 barrier device, 300 K, no bias, other standard variables, and 3 nm thick barriers and a 7 nm quantum well, determine the energies of the two lowest quasi-bound states.