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Tags: quantum dots

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.

All Categories (61-80 of 187)

  1. Micro-scaled Biochips with Optically Active Surfaces for Near and Far-field Analysis of Cellular Fluorescence

    31 Aug 2007 | Online Presentations | Contributor(s): Huw Summers

    The integration of thin (< 100 nm) metal films with micro-scale optical waveguides provides a route to controlled spatial excitation of cellular fluorescence within a biochip...

    http://nanohub.org/resources/3121

  2. Quantum Dot Lab Learning Module: An Introduction

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

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

    http://nanohub.org/resources/2846

  3. Quantum dots

    Open | Responses: 1

    What I want to do is building an aluminum quantum dot coupled to aluminum leads to observe Coulomb Blockade. To form the tunnel barriers we oxidize the Al in a plasma without any detailed...

    http://nanohub.org/answers/question/2

  4. Finite Size Scaling and Quantum Criticality

    09 May 2007 | Online Presentations | Contributor(s): Sabre Kais

    The study of quantum phase transitions, which are driven by quantum fluctuations as a consequence of Heisenberg's uncertainty principle, continues to be of increasing interest in the fields...

    http://nanohub.org/resources/2663

  5. Quantum Dot - synthesis routes

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

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

    http://nanohub.org/resources/2520

  6. Is Seeing Believing? How to Think Visually and Analyze with Both Your Eyes and Brain

    26 Mar 2007 | Online Presentations | Contributor(s): David Ebert

    This presentation will cover the basic techniques, and some of the available tools, for visualization, and will explain how to avoid miscommunicating information from visualizations.

    http://nanohub.org/resources/2512

  7. What Can the TEM Tell You About Your Nanomaterial?

    26 Feb 2007 | Online Presentations | Contributor(s): Eric Stach

    In this tutorial, I will present a brief overview of the ways that transmission electron microscopy can be used to characterize nanoscale materials. This tutorial will emphasize what TEM does...

    http://nanohub.org/resources/2359

  8. Atomistic Alloy Disorder in Nanostructures

    26 Feb 2007 | Online Presentations | Contributor(s): Gerhard Klimeck

    Electronic structure and quantum transport simulations are typically performed in perfectly ordered semiconductor structures. Bands and modes are defined resulting in quantized conduction and...

    http://nanohub.org/resources/2350

  9. Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields

    08 Jan 2007 | Online Presentations | Contributor(s): Daniel Neuhauser

    As nanonphotonics and nanoelectronics are pushed down towards the molecular scale, interesting effects emerge. We discuss how birefringence (different propagation of two polarizations) is...

    http://nanohub.org/resources/2256

  10. Nanoparticles in Biology and Materials: Engineering the Interface through Synthesis

    29 Jan 2007 | Online Presentations | Contributor(s): Vincent Rotello

    Monolayer-protected nanoparticles provide versatile tools for nanotechnology. In our research, we use these nanoparticles as building blocks for the creation of functional magnetic and...

    http://nanohub.org/resources/2312

  11. Nanotechnology and Occupational Safety and Health: What are the Issues, What do we know, and What is NIOSH Doing

    21 Nov 2006 | Online Presentations | Contributor(s): Charles L. Geraci

    Nanotechnology and Occupational Safety and Health: What are the Issues, What do we know, and What is NIOSH Doing

    http://nanohub.org/resources/2008

  12. NEMO 3D: Intel optimizations and Multiple Quantum Dot Simulations

    03 Aug 2006 | Online Presentations | Contributor(s): Anish Dhanekula, Gerhard Klimeck

    NEMO-3D is a nanoelectronic modeling tool that analyzes the electronic structure of nanoscopic devices. Nanoelectronic devices such as Quantum Dots (QDs) can contain millions of atoms,. Therefore,...

    http://nanohub.org/resources/1673

  13. A MATLAB code for Hartree Fock calculation of H-H ground state bondlength and energy using STO-4G

    08 Aug 2006 | Downloads | Contributor(s): Amritanshu Palaria

    Hartree Fock (HF) theory is one of the basic theories underlying the current understanding of the electronic structure of materials. It is a simple non-relativistic treatment of many electron...

    http://nanohub.org/resources/1718

  14. Quantum Transport: Atom to Transistor (Spring 2004)

    23 May 2006 | Courses | Contributor(s): Supriyo Datta

    Spring 2004 Please Note: A newer version of this course is now available and we would greatly appreciate your feedback regarding the new format and contents. Course Information...

    http://nanohub.org/resources/1490

  15. Nanotubes and Nanowires: One-dimensional Materials

    17 Jul 2006 | Online Presentations | Contributor(s): Timothy D. Sands

    What is a nanowire? What is a nanotube? Why are they interesting and what are their potential applications? How are they made? This presentation is intended to begin to answer these questions...

    http://nanohub.org/resources/1639

  16. Engineering Nanomedical Systems

    06 Mar 2006 | Online Presentations | Contributor(s): James Leary

    This tutorial discusses general problems and approaches to the design of engineered nanomedical systems. One example given is the engineering design of programmable multilayered nanoparticles...

    http://nanohub.org/resources/1093

  17. Molecular Transport Structures: Elastic Scattering, Vibronic Effects and Beyond

    13 Feb 2006 | Online Presentations | Contributor(s): Mark A. Ratner, Abraham Nitzan, Misha Galperin

    Current experimental efforts are clarifying quite beautifully the nature of charge transport in so-called molecular junctions, in which a single molecule provides the channel for current flow...

    http://nanohub.org/resources/1018

  18. A Gentle Introduction to Nanotechnology and Nanoscience

    13 Feb 2006 | Online Presentations | Contributor(s): Mark A. Ratner

    While the Greek root nano just means dwarf, the nanoscale has become a giant focus of contemporary science and technology. We will examine the fundamental issues underlying the excitement...

    http://nanohub.org/resources/1021

  19. Active Photonic Nanomaterials: From Random to Periodic Structures

    06 Feb 2006 | Online Presentations | Contributor(s): Hui Cao

    Active photonic nanomaterials, which have high gain or large nonlinearity, are essential to the development of nanophotonic devices and circuits. In this talk, I will provide a review of our...

    http://nanohub.org/resources/1012

  20. Quantum-dot Cellular Automata (QCA) - Memory Cells

    03 Feb 2006 | Animations | Contributor(s): John C. Bean

    Scientists and engineers are looking for completely different ways of storing and analyzing information. Quantum-dot Cellular Automata are one possible solution. In computers of the future,...

    http://nanohub.org/resources/1006

nanoHUB.org, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.