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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.

Online Presentations (1-20 of 53) feed

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

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    25 Oct 2011 | Online Presentations | 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 …

    http://nanohub.org/resources/12312

  2. BME 695L Lecture 5: Nanomaterials for Core Design

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    03 Oct 2011 | Online Presentations | Contributor(s): James Leary

    See references below for related reading. 5.1 Introduction 5.1.1 core building blocks 5.1.2 functional cores 5.1.3 functionalizing the core surface 5.2 Ferric oxide …

    http://nanohub.org/resources/12057

  3. The History of Semiconductor Heterostructures Research: From Early Double Heterostructure Concept to Modern Quantum Dot Structures

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    11 Jul 2011 | Online Presentations | Contributor(s): Zhores I. Alferov

    It would be very difficult today to imagine solid-state physics without semiconductor heterostructures. Semiconductor heterostructures and especially double heterostructures, including quantum wells, …

    http://nanohub.org/resources/11436

  4. Illinois ECE598XL Semiconductor Nanotechnology - 3 - Quantum Dots: Formation

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    27 Jun 2011 | Online Presentations | Contributor(s): Xiuling Li

    http://nanohub.org/resources/11404

  5. Tutorial 4b: Introduction to the NEMO3D Tool - Electronic Structure and Transport in 3D

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    29 Mar 2011 | Online Presentations | Contributor(s): Gerhard Klimeck

    Electronic Structure and Transport in 3D - Quantum Dots, Nanowires and Ultra-Thin Body Transistors

    http://nanohub.org/resources/11049

  6. Atomistic Modeling and Simulation Tools for Nanoelectronics and their Deployment on nanoHUB.org

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    16 Dec 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    At the nanometer scale the concepts of device and material meet and a new device is a new material and vice versa. While atomistic device representations are novel to device physicists, the …

    http://nanohub.org/resources/10199

  7. Nanoelectronic Modeling Lecture 34: Alloy Disorder in Quantum Dots

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    05 Aug 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Timothy Boykin, Chris Bowen

    This presentation discusses the consequences of Alloy Disorder in strained InGaAs Quantum Dots Reminder of the origin of bandstructure and bandstructure engineering What happens when there is …

    http://nanohub.org/resources/9279

  8. Nanoelectronic Modeling Lecture 32: Strain Layer Design through Quantum Dot TCAD

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    04 Aug 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Muhammad Usman

    This presentation demonstrates the utilization of NEMO3D to understand complex experimental data of embedded InAs quantum dots that are selectively overgrown with a strain reducing InGaAs layer. …

    http://nanohub.org/resources/9272

  9. Nanoelectronic Modeling Lecture 31a: Long-Range Strain in InGaAs Quantum Dots

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    04 Aug 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    This presentation demonstrates the importance of long-range strain in quantum dots Numerical analysis of the importance of the buffer around the central quantum dot - local band edges – …

    http://nanohub.org/resources/9270

  10. Nanoelectronic Modeling Lecture 29: Introduction to the NEMO3D Tool

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    04 Aug 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    This presentation provides a very high level software overview of NEMO3D. The items discussed are: Modeling Agenda and Motivation Tight-Binding Motivation and basic formula expressions Tight …

    http://nanohub.org/resources/8599

  11. Nanoelectronic Modeling Lecture 28: Introduction to Quantum Dots and Modeling Needs/Requirements

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    20 Jul 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    This presentation provides a very high level software overview of NEMO1D. Learning Objectives: This lecture provides a very high level overview of quantum dots. The main issues and questions …

    http://nanohub.org/resources/8598

  12. Nanoelectronic Modeling: Exercises 1-3 - Barrier Structures, RTDs, and Quantum Dots

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    27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    Exercises: Barrier Structures Uses: Piece-Wise Constant Potential Barrier Tool Resonant Tunneling Diodes Uses: Resonant Tunneling Diode Simulation with NEGF • Hartree calculation • …

    http://nanohub.org/resources/8259

  13. Nanobiotechnology – a different perspective

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    22 Jul 2008 | Online Presentations | Contributor(s): Murali Sastry

    The study of the synthesis, exotic properties, assembly/packaging and potential commercial application of nanomaterials is an extremely important topic of research that is expected to have …

    http://nanohub.org/resources/4807

  14. Nano Carbon: From ballistic transistors to atomic drumheads

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    14 May 2008 | Online Presentations | Contributor(s): Paul L. McEuen

    Carbon takes many forms, from precious diamonds to lowly graphite. Surprisingly, it is the latter that is the most prized by nano physicists. Graphene, a single layer of graphite, can serve as an …

    http://nanohub.org/resources/4398

  15. Bionanotechnology: a different perspective

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    30 Apr 2008 | Online Presentations | Contributor(s): Murali Sastry

    The study of the synthesis, exotic properties, assembly/packaging and potential commercial application of nanomaterials is an extremely important topic of research that is expected to have …

    http://nanohub.org/resources/4402

  16. Introduction to Quantum Dot Lab

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    31 Mar 2008 | Online Presentations | Contributor(s): Sunhee Lee, Hoon Ryu, Gerhard Klimeck

    The nanoHUB tool "Quantum Dot Lab" allows users to compute the quantum mechanical "particle in a box" problem for a variety of different confinement shapes, such as boxes, ellipsoids, disks, and …

    http://nanohub.org/resources/4194

  17. Nanoelectronic Modeling: Multimillion Atom Simulations, Transport, and HPC Scaling to 23,000 Processors

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    07 Mar 2008 | Online Presentations | Contributor(s): Gerhard Klimeck

    Future field effect transistors will be on the same length scales as “esoteric” devices such as quantum dots, nanowires, ultra-scaled quantum wells, and resonant tunneling diodes. In those …

    http://nanohub.org/resources/3988

  18. MCW07 Physics of Contact Induced Current Asymmetry in Transport Through Molecules

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    25 Feb 2008 | Online Presentations | Contributor(s): Bhaskaran Muralidharan, owen miller, Neeti Kapur, Avik Ghosh, Supriyo Datta

    We first outline the qualitatively different physics involved in the charging-induced current asymmetries in molecular conductors operating in the strongly coupled (weakly interacting) …

    http://nanohub.org/resources/3073

  19. Finite Size Scaling and Quantum Criticality

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    02 Jan 2008 | Online Presentations | Contributor(s): Sabre Kais

    In statistical mechanics, the finite size scaling method provides a systematic way to extrapolate information about criticality obtained from a finite system to the thermodynamic limit. For quantum …

    http://nanohub.org/resources/3526

  20. NanoElectronic MOdeling: NEMO

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    20 Dec 2007 | Online Presentations | Contributor(s): Gerhard Klimeck

    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 …

    http://nanohub.org/resources/3707

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