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Latest Quantum dot Stories

2012-05-19 00:00:37

Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics. Vikas Berry, William H. Honstead professor of chemical engineering, has developed a novel process that uses a diamond knife to cleave graphite into graphite nanoblocks, which are precursors for graphene quantum dots. These nanoblocks are then exfoliated to produce...

New Research Could Peg Quantum Dots As Future Of Lighting
2012-05-10 03:53:43

Researchers are looking to white-light quantum dots as the future of lighting. White-light quantum dots are ultra-small fluorescent beads of cadmium selenide that are able to convert blue light produced by an LED into a warm white light similar to an incandescent light. Vanderbilt University researchers are reporting that they have successfully boosted the fluorescent efficiency in nano crystals from an original level of three percent to as high as 45 percent.  This feat proves...

2012-05-04 09:12:36

Switching light with light: only 140 photons are needed An optical switch developed at the Joint Quantum Institute (JQI) spurs the prospective integration of photonics and electronics. What, isn't electronics good enough? Well, nothing travels faster than light, and in the effort to speed up the processing and transmission of information, the combined use of light parcels (photons) along with electricity parcels (electrons) is desirable for developing a workable opto-electronic protocol....

Single Nanomaterial Yields Many Laser Colors
2012-04-30 07:46:35

Engineers at Brown University and QD Vision Inc. have created nanoscale single crystals that can produce the red, green, or blue laser light needed in digital displays. The size determines color, but all the pyramid-shaped quantum dots are made the same way of the same elements. In experiments, light amplification required much less power than previous attempts at the technology. The team´s prototypes are the first lasers of their kind. Red, green, and blue lasers have become small...

2012-04-26 12:08:48

Liquid solar cells are cheaper, more flexible than existing solar options Scientists at USC have developed a potential pathway to cheap, stable solar cells made from nanocrystals so small they can exist as a liquid ink and be painted or printed onto clear surfaces. The solar nanocrystals are about four nanometers in size – meaning you could fit more than 250,000,000,000 on the head of a pin – and float them in a liquid solution, so "like you print a newspaper, you can print...

2012-04-25 21:26:15

Liquid solar cells are cheaper, more flexible than existing solar options Scientists at USC have developed a potential pathway to cheap, stable solar cells made from nanocrystals so small they can exist as a liquid ink and be painted or printed onto clear surfaces. The solar nanocrystals are about four nanometers in size – meaning you could fit more than 250,000,000,000 on the head of a pin – and float them in a liquid solution, so "like you print a newspaper, you can print...

NIST Physicists Benchmark Quantum Simulator With Hundreds Of Qubits
2012-04-25 11:32:05

Physicists at the National Institute of Standards and Technology (NIST) have built a quantum simulator that can engineer interactions among hundreds of quantum bits (qubits)–10 times more than previous devices. As described in the April 26 issue of Nature*, the simulator has passed a series of important benchmarking tests and scientists are poised to study problems in material science that are impossible to model on conventional computers. Many important problems in...

2012-04-03 09:29:12

Model simulates closer control over the transport of information-carrying electrons Physicists have recently devised a new method for handling the effect of the interplay between vibrations and electrons on electronic transport. Their paper is about to be published in EPJ B´. This study, led by scientists from Zhejiang University, Hangzhou, China, and the Centre for Computational Science and Engineering at the National University of Singapore, could have implications for quantum...

2012-03-26 13:24:56

Scientists are enlisting the living, self-propelled microbes found in pond scum – the pea-green surface slicks that form on ponds – in the development of a long-awaited new test to detect the cells that spread cancer through the bloodstream from the original tumor to new sites in the body. In a report here today at the 243rd National Meeting & Exposition of the American Chemical Society (ACS), the world's largest scientific society, they described how the test is intended...


Word of the Day
callithump
  • A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
'Callithump' is a back-formation of 'callithumpian,' a 'fanciful formation' according to the Oxford English Dictionary. However, the English Dialect Dictionary, says 'Gallithumpians' is a Dorset and Devon word from the 1790s that refers to 'a society of radical social reformers' or 'noisy disturbers of elections and meetings.'
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