Tags: quantum dots

More tags

Description

Quantum dots have a small, countable number of electrons confined in a small space. Their electrons are confined by having a tiny bit of conducting material surrounded on all sides by an insulating material. If the insulator is strong enough, and the conducting volume is small enough, then the confinement will force the electrons to have discrete (quantized) energy levels. These energy levels can influence the device behavior at a macroscopic scale, showing up, for example, as peaks in the conductance. Because of the quantized energy levels, quantum dots have been called "artificial atoms." Neighboring, weakly-coupled quantum dots have been called "artificial molecules."

Learn more about quantum dots from the many resources on this site, listed below. More information on Quantum dots can be found here.

Resources (61-80 of 114)

  1. NEMO5 Tutorial 5A: Devi ce Simulation - Quantum Dots

    17 Jul 2012 | | Contributor(s):: Jean Michel D Sellier

    This presentation introduces the capabilities of NEMO5 to simulate quantum dots.

  2. NEMO5 Tutorial 5C: Quantum Dots with Strain and Electronic Wave Functions

    18 Jul 2012 | | Contributor(s):: Yuling Hsueh

  3. OctopusPY: Tool for Calculating Effective Mass from Octopus DFT Bandstructures

    16 Aug 2021 | | Contributor(s):: Olivia M. Pavlic, Austin D. Fatt, Gregory T. Forcherio, Timothy A. Morgan, Jonathan Schuster

    OctopusPY is a Python package supporting manipulation and analytic processing of electronic band structure data generated by the density functional theory (DFT) software Octopus. In particular, this package imports Octopus-calculated band structure for a given material and...

  4. On the Two to Three Dimensional Growth Transition in Strained Silicon Germanium Thin Films

    02 Feb 2012 | | Contributor(s):: Brian Demczyk

    Utilizing a model adapted from classical nucleation theory [8], we calculate a "critical thickness" for island formation, taking into account the surfaceenergies of the deposit and the substrate and the elastic modulus of the deposit, to which experimental results for CVD grown silicon germanium...

  5. Parallel Computing for Realistic Nanoelectronic Simulations

    out of 5 stars 

    12 Sep 2005 | | Contributor(s):: Gerhard Klimeck

    Typical modeling and simulation efforts directed towards the understanding of electron transport at the nanometer scale utilize single workstations as computational engines. Growing understanding of the involved physics and the need to model realistically extended devices increases the complexity...

  6. Path Integral Monte Carlo

    out of 5 stars 

    13 Dec 2007 | | Contributor(s):: John Shumway, Matthew Gilbert

    Tool Description

  7. Plasmonic Nanophotonics: Coupling Light to Nanostructure via Plasmons

    out of 5 stars 

    03 Oct 2005 | | Contributor(s):: Vladimir M. Shalaev

    The photon is the ultimate unit of information because it packages data in a signal of zero mass and has unmatched speed. The power of light is driving the photonicrevolution, and information technologies, which were formerly entirely electronic, are increasingly enlisting light to communicate...

  8. Polarization Response of Multi-layer InAs Quantum Dot Stacks

    out of 5 stars 

    20 Oct 2011 | | Contributor(s):: Muhammad Usman

    Recent experimental measurements, without any theoretical guidance, showed that isotropic polarization response can be achieved by increasing the number of QD layers in a QD stack. In this work, we analyse the polarization response of multi-layer quantum dot stacks containing up to nine quantum...

  9. Properties of Nanomaterials

    out of 5 stars 

    01 Oct 2021 | | Contributor(s):: Peter Kazarinoff, Mariel Kolker, NACK Network

  10. Quantitative Modeling and Simulation of Quantum Dots

    out of 5 stars 

    16 Jul 2010 | | Contributor(s):: Muhammad Usman

    Quantum dots grown by self-assembly process are typically constructed by 50,000 to 5,000,000 structural atoms which confine a small, countable number of extra electrons or holes in a space that is comparable in size to the electron wavelength. Under such conditions quantum dots can be interpreted...

  11. Quantum dot - Design a laser

    out of 5 stars 

    07 Nov 2010 | | Contributor(s):: SungGeun Kim

    This document is a real-life problem for the quantum dot lab tool. Basic knowledge on the operation principle of a quantum dot laser is needed to solve this test. The test requires the tested person to be familar with the quantum dot lab tool.

  12. Quantum Dot - synthesis routes

    out of 5 stars 

    03 Apr 2007 | | Contributor(s):: Saurabh Madaan

    A brief survey of synthesis routes of quantum dots, with more emphasis on epitaxial and colloidal approaches.

  13. Quantum Dot based Photonic Devices

    out of 5 stars 

    19 Mar 2012 | | Contributor(s):: Muhammad Usman

    Deployment of nanometer-sized semiconductor quantum dots (QDs) in the active region ofphotonic devices such as lasers, semiconductor optical amplifiers (SOA's), photo-detectors etc.for the next generation communication systems offers unique characteristics such astemperature-insensitivity, high...

  14. Quantum Dot Lab

    out of 5 stars 

    12 Nov 2005 | | Contributor(s):: Prasad Sarangapani, James Fonseca, Daniel F Mejia, James Charles, Woody Gilbertson, Tarek Ahmed Ameen, Hesameddin Ilatikhameneh, Andrew Roché, Lars Bjaalie, Sebastian Steiger, David Ebert, Matteo Mannino, Hong-Hyun Park, Tillmann Christoph Kubis, Michael Povolotskyi, Michael McLennan, Gerhard Klimeck

    Compute the eigenstates of a particle in a box of various shapes including domes, pyramids and multilayer structures.

  15. Quantum Dot Lab - A Novel Visualization Tool using Jupyter

    out of 5 stars 

    07 Oct 2017 | | Contributor(s):: Khaled Aboumerhi

    As semiconductor devices scale down into the nano regime, deep understanding of quantum mechanical properties of nano-structures become increasingly essential. Quantum dots are famous examples of such nano-structures. Quantum dots have attracted a lot of attention over the last two decades due to...

  16. Quantum Dot Lab Demonstration: Pyramidal Qdots

    out of 5 stars 

    03 Jun 2009 | | Contributor(s):: Gerhard Klimeck, Benjamin P Haley

    This video shows the simulation and analysis of a pyramid-shaped quantum dot using Quantum Dot Lab. Several powerful analytic features of this tool are demonstrated.

  17. Quantum Dot Lab Learning Module: An Introduction

    out of 5 stars 

    02 Jul 2007 | | Contributor(s):: James K Fodor, Jing Guo

    THIS MATERIAL CORRESPONDS TO AN OLDER VERSION OF QUANTUM DOT LAB THAN CURRENTLY AVAILABLE ON nanoHUB.org.

  18. Quantum Dot Lab via Jupyter

    out of 5 stars 

    30 Aug 2017 | | Contributor(s):: Khaled Aboumerhi, Tarek Ahmed Ameen, Prasad Sarangapani, Daniel F Mejia, Gerhard Klimeck

    Simulate 3-D confined states in quantum dot geometries using Jupyter notebook for educational purposes

  19. Quantum Dot Lab: First-Time User Guide

    out of 5 stars 

    08 Feb 2011 | | Contributor(s):: SungGeun Kim, Lynn Zentner

    This first-time user guide introduces the quantum dot lab tool. It includes an explanation of the input/output interface and the relationship between inputs and outputs of the quantum dot lab.NCN@Purdue[1] Gerhard Klimeck, Introduction to Quantum Dot Lab: https://www.nanohub.org/resources/4194[2]...

  20. Quantum Dot Quantum Computation Simulator

    out of 5 stars 

    04 Aug 2012 | | Contributor(s):: Brian Sutton

    Performs simulations of quantum dot quantum computation using a model Hamiltonian with an on-site magnetic field and modulated inter-dot exchange interaction.