quantum dot

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quantum dot

[‚kwänt·əm ′dät]
(electronics)
A quantized electronic structure in which electrons are confined with respect to motion in all three dimensions.

quantum dot

(physics)
(Or "single-electron transistor") A location capable of containing a single electrical charge; i.e., a single electron of Coulomb charge. Physically, quantum dots are nanometer-size semiconductor structures in which the presence or absence of a quantum electron can be used to store information.

See also: quantum cell, quantum cell wire, quantum-dot cellular automata.

http://www-mtl.mit.edu/MTL/bulletin/v6n2/Kumar.html.

["Quantum Dot Heterostructures", D. Bimberg, et al, John Wiley & Sons Ltd., Dec 1998].

quantum dot

A minuscule crystal of semiconductor material composed of various compounds of chemicals such as cadmium, zinc, tellurium, selenium and sulfur. Less than 500 nanometers in size, these "nanoparticles" react to light, as well as electricity, and emit their own light across the visible range of wavelengths from 470 to 730 nm.

The applications for quantum dots include medical sensors and lighting systems that are "painted" onto materials. Thin film deposits of quantum dots on solar cell substrates can increase their voltage output by fluorescing the light before it is captured. See QuantumFilm, quantum dot backlight, ULED and QLED.
References in periodicals archive ?
Summary: TEHRAN (FNA)- Researchers have designed a new type of laser called a quantum dot ring laser that emits red, orange, and green light.
These quantum dots are just very small pieces of cadmium telluride.
In present work, successive ionic layer adsorption and reaction (SILAR) process is used to synthesis Pb5Sb8S17 quantum dots on a ZnO nanorods photoelectrode.
Nanoco added that it is building a patent position in anticipation of many future applications of quantum dots including QLED, a technology that Nanoco has researched for almost 10 years.
Browse 13 market data Tables and 62 Figures spread through 162 Pages and an in-depth TOC on "Global Quantum Dot Display Market"
The SUHD TV with Quantum dot display is also the only TV in the world that does not contain cadmium, a harmful chemical to both humans and the environment.
Nanoco would get a licence fee and royalties on Merck's sales of the Nanoco cadmium-free quantum dots Merck manufactures.
In our present work we study structural, electronic and optical properties of pure silicon and germanium quantum dots as well as examine ways for optimal "band gap engineering" (band gap adjustment to desired values) of SiGe quantum dots.
UHD TVs are the early adopters of this technology and the amount of quantum dots required for UHD TVs is high compared to quantity required in smartphones and tablet display applications.
It's a smartphone attached to a lab-on-a-chip, which uses quantum dots to detect viruses such as HIV or hepatitis lurking in a person's blood.
Also known as nanoparticles, at less than 500 nanometers, quantum dots are small enough to exhibit quantum mechanical properties.

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