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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 57)

  1. Excited State Spectroscopy of a Quantum Dot Molecule

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    11 Jan 2013 | Online Presentations | Contributor(s): Muhammad Usman

    Atomistic electronic structure calculations are performed to study the coherent inter-dot couplings of the electronic states in a single InGaAs quantum dot molecule. The experimentally observed …

    https://nanohub.org/resources/12686

  2. [Illinois]: Bioengineering Seminar Series: Engineering Quantum Dots for Multispectral Cancer Imaging

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    03 Jan 2013 | Online Presentations | Contributor(s): Andrew Smith

    Video will be available in May 2013 Quantum dots are light-emitting nanocrystals that have emerged as a new class of fluorescent label for molecular and cellular imaging. These particles have …

    https://nanohub.org/resources/16191

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

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

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

    https://nanohub.org/resources/14705

  4. Quantum Dot based Photonic Devices

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    01 Apr 2012 | Online Presentations | Contributor(s): Muhammad Usman

    Deployment of nanometer-sized semiconductor quantum dots (QDs) in the active region of photonic devices such as lasers, semiconductor optical amplifiers (SOA's), photo-detectors etc. for the next …

    https://nanohub.org/resources/13532

  5. 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 …

    https://nanohub.org/resources/12312

  6. 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 …

    https://nanohub.org/resources/12057

  7. 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, …

    https://nanohub.org/resources/11436

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

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

    https://nanohub.org/resources/11404

  9. 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

    https://nanohub.org/resources/11049

  10. 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 …

    https://nanohub.org/resources/10199

  11. 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 …

    https://nanohub.org/resources/9279

  12. 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. …

    https://nanohub.org/resources/9272

  13. 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 – …

    https://nanohub.org/resources/9270

  14. 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 …

    https://nanohub.org/resources/8599

  15. 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 …

    https://nanohub.org/resources/8598

  16. 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 • …

    https://nanohub.org/resources/8259

  17. 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 …

    https://nanohub.org/resources/4807

  18. 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 …

    https://nanohub.org/resources/4398

  19. 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 …

    https://nanohub.org/resources/4402

  20. 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 …

    https://nanohub.org/resources/4194

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