Latest Quantum dot Stories

MIT Researchers Create Best Ever Quantum Dots
2013-02-04 15:37:24

Michael Harper for redOrbit.com — Your Universe Online In the 1980s, scientists discovered very tiny particles that are capable of emitting light when exposed to ultraviolet light. These particles — now known as quantum dots — are made of a semiconductor material and can display light in a wide array of colors depending on the size of the particle. Though these dots initially showed great promise for a number of purposes, several limitations have prevented them from being...

Light-based Hydrogen Production Substantially Improved
2012-11-09 08:56:20

[ Watch The Video ] University of Rochester Hydrogen is an attractive fuel source because it can easily be converted into electric energy and gives off no greenhouse emissions. A group of chemists at the University of Rochester is adding to its appeal by increasing the output and lowering the cost of current light-driven hydrogen-production systems. The work, funded by the U.S. Department of Energy, was led by chemistry professors Richard Eisenberg, Todd Krauss, and Patrick Holland,...

Electrons Enclosed Inside Nano-pyramids
2012-09-28 15:54:14

Quantum dots are nanostructures of semiconducting materials that behave a lot like single atoms and are very easy to produce. Given their special properties, researchers see huge potential for quantum dots in technological applications. Before this can happen, however, we need a better understanding of how the electrons “trapped” inside them behave. Dresden physicists have recently observed how electrons in individual quantum dots absorb energy and emit it again as light. Their...

2012-08-27 11:30:04

A revolutionary tool created by scientists at the University of Sheffield has enabled researchers to analyze nanometer-sized devices without destroying them for the first time, opening the door to a new wave of technologies. The nuclear magnetic resonance apparatus — developed by the University's Department of Physics and Astronomy — will allow for further developments and new applications for nanotechnology which is increasingly used in harvesting solar energy, computing,...

2012-08-21 00:46:32

New process developed at MIT could enable better LED displays, solar cells and biosensors – and foster basic physics research. Films made of semiconductor nanocrystals – tiny crystals measuring just a few billionths of a meter across – are seen as a promising new material for a wide range of applications. Nanocrystals could be used in electronic or photonic circuits, detectors for biomolecules, or the glowing pixels on high-resolution display screens. They also hold...

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