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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.

Presentation Materials (1-6 of 6)

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

    Presentation Materials | 09 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...

  2. TE/TM polarisation response of InAs/GaAs quantum dot bilayers

    Presentation Materials | 22 Oct 2015 | Contributor(s):: Muhammad Usman

    Quantum dot bilayers are strong candidates for the design of telecom devices working at 1300 nm wavelength range. Here we analyse - both experimentally and theoretically - their optical and polarisation properties.  

  3. Structure and Morphology of Silicon-Germanium Thin Films

    Presentation Materials | 07 Feb 2015 | Contributor(s):: Brian Demczyk

    This presentation describes the growth of (Si,Ge & SiGe) thin films on Si and Ge (001) and (111) substrates by ultrahigh vacuum chemical vapor deposition (UHVCVD). Thin films were characterized structurally by conventional and high-resolution transmission electron microscopy (TEM) and...

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

    Presentation Materials | 27 Jun 2011 | Contributor(s):: Xiuling Li

  5. Quantitative Modeling and Simulation of Quantum Dots

    Presentation Materials | 18 Apr 2011 | 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...

  6. Visualization of and Educational Tool for Quantum Dots

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    Presentation Materials | 15 Aug 2004 | Contributor(s):: Aaron Christensen, Adrian Rios

    Quantum dots (QDs) are confined structures made of metals and semiconductors that are capable of containing free electrons.The ability to visualize these small devices is advantageous in determining probable electron orbitals and in observing information not easily conceived in raw datasets.