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.

Resources (1-20 of 92)

  1. Illinois ABE 446 Lecture 3: Quantum Dots and Polymers

    11 Feb 2010 | | Contributor(s):: Kaustubh Bhalerao

  2. 2005 Molecular Conduction and Sensors Workshop

    27 Jul 2005 |

    This is the 3rd in a series of annual workshops on Molecular Conduction. The prior workshops have been at Purdue University, W. Lafayette, IN (2003) and Nothwestern University, Evanston, IL (2004). The workshop has been an informal and open venue for discussing new results, key challenges, and...

  3. 3D wavefunctions

    09 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    In quantum mechanics the time-independent Schrodinger's equation can be solved for eigenfunctions (also called eigenstates or wave-functions) and corresponding eigenenergies (or energy levels) for a stationary physical system. The wavefunction itself can take on negative and positive values and...

  4. A Gentle Introduction to Nanotechnology and Nanoscience

    13 Feb 2006 | | Contributor(s):: Mark 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 involved in nanoscale research - what, why and how. Specific topics include assembly, properties,...

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

    08 Aug 2006 | | 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 system that accounts for the antisymmetric (fermion) nature of electronic wavefunction but does not...

  6. Active Photonic Nanomaterials: From Random to Periodic Structures

    06 Feb 2006 | | 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 recent research activities related to the fabrication of active photonic nanomaterials and the...

  7. Atomic Force Microscopy

    01 Dec 2005 | | Contributor(s):: Arvind Raman

    Atomic Force Microscopy (AFM) is an indispensible tool in nano science for the fabrication, metrology, manipulation, and property characterization of nanostructures. This tutorial reviews some of the physics of the interaction forces between the nanoscale tip and sample, the dynamics of the...

  8. Atomistic Alloy Disorder in Nanostructures

    26 Feb 2007 | | 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 discrete states. But what if the material is fundamentally disordered? What if the disorder is at the...

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

    16 Dec 2010 | | 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 semiconductor materials modeling community usually treats infinitely periodic structures. Two electronic...

  10. Bandstructure in Nanoelectronics

    01 Nov 2005 | | Contributor(s):: Gerhard Klimeck

    This presentation will highlight, for nanoelectronic device examples, how the effective mass approximation breaks down and why the quantum mechanical nature of the atomically resolved material needs to be included in the device modeling. Atomistic bandstructure effects in resonant tunneling...

  11. Bionanotechnology: a different perspective

    30 Apr 2008 | | 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 far-reaching global impact. The focus of my talk will be on an emerging branch of nanotechnology that...

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

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

    See references below for related reading.5.1      Introduction5.1.1    core building blocks5.1.2    functional cores5.1.3    functionalizing the core surface5.2      Ferric...

  13. Control of Exchange Interaction in a Double Dot System

    05 Feb 2004 | | Contributor(s):: Mike Stopa

    As Rolf Landauer observed in 1960, information is physical. As a consequence, the transport and processing of information must obey the laws of physics. It therefore makes sense to base the laws of information processing and computation on the laws of physics and in particular on quantum...

  14. Coulomb Blockade Simulation

    05 Jul 2006 | | Contributor(s):: Xufeng Wang, Bhaskaran Muralidharan, Gerhard Klimeck

    Simulate Coulomb Blockade through Many-Body Calculations in a single and double quantum dot system

  15. Designing Nanocomposite Materials for Solid-State Energy Conversion

    10 Nov 2005 | | Contributor(s)::

    New materials will be necessary to break through today's performance envelopes for solid-state energy conversion devices ranging from LED-based solid-state white lamps to thermoelectric devices for solid-state refrigeration and electric power generation. The combination of recent materials...

  16. Designing Nanocomposite Thermoelectric Materials

    08 Nov 2005 | | Contributor(s):: Timothy D. Sands

    This tutorial reviews recent strategies for designing high-ZT nanostructured materials, including superlattices, embedded quantum dots, and nanowire composites. The tutorial highlights the challenges inherent to coupled electronic and thermal transport properties.

  17. Development of a Nanoelectronic 3-D (NEMO 3-D ) Simulator for Multimillion Atom Simulations and Its Application to Alloyed Quantum Dots

    14 Jan 2008 | | Contributor(s):: Gerhard Klimeck, Timothy Boykin

    Material layers with a thickness of a few nanometers are common-place in today’s semiconductordevices. Before long, device fabrication methods will reach a point at which the other two devicedimensions are scaled down to few tens of nanometers. The total atom count in such deca-nanodevices is...

  18. E304 L8.1.3: Nanophotonics - Quantum Dots

    15 Apr 2016 |

  19. Engineering at the nanometer scale: Is it a new material or a new device?

    06 Nov 2007 | | Contributor(s):: Gerhard Klimeck

    This seminar will overview NEMO 3D simulation capabilities and its deployment on the nanoHUB as well as an overview of the nanoHUB impact on the community.

  20. Engineering Nanomedical Systems

    16 Nov 2007 | | Contributor(s):: James Leary

    This tutorial will cover general problems and approaches to the design of engineered nanomedical systems. An example to be covered is the engineering design of programmable multilayered nanoparticles (PMNP) to control a multi-sequence process of targeting to rare cells in-vivo, re-targeting to...