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Latest Quantum dot Stories

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...

2012-03-07 21:35:32

In recent years, scientists have begun to harness DNA's powerful molecular machinery to build artificial structures at the nanoscale using the natural ability of pairs of DNA molecules to assemble into complex structures. Such "DNA origami," first developed at the California Institute of Technology, could provide a means of assembling complex nanostructures such as semiconductor devices, sensors and drug delivery systems, from the bottom up. While most researchers in the field are working...

2012-02-09 00:03:08

New technique holds promise for better understanding of brain disorders By harnessing quantum dots–tiny light-emitting semiconductor particles a few billionths of a meter across–researchers at the University of Washington (UW) have developed a new and vastly more targeted way to stimulate neurons in the brain. Being able to switch neurons on and off and monitor how they communicate with one another is crucial for understanding–and, ultimately, treating–a host of...

Bright Lights Of Purity
2012-01-31 04:43:01

Berkeley Lab Researchers Discover Why Pure Quantum Dots and Nanorods Shine Brighter To the lengthy list of serendipitous discoveries — gravity, penicillin, the New World — add this: Scientists with the U.S. Department of Energy (DOE)´s Lawrence Berkeley National Laboratory (Berkeley Lab) have discovered why a promising technique for making quantum dots and nanorods has so far been a disappointment. Better still, they´ve also discovered how to correct the problem. A...

2012-01-23 13:26:12

Physicists at the University of New South Wales have observed a new kind of interaction that can arise between electrons in a single-atom silicon transistor. The findings, to be published this week in the journal Physical Review Letters, offer a more complete understanding of the mechanisms for electron transport in nanostructures at the atomic level. "We have been able to study some of the most complicated transport mechanisms that can arise up to the single atom level," says lead...

2012-01-12 21:48:38

Rice University-led team creates tiny materials in bulk from carbon fiber A Rice University laboratory has found a way to turn common carbon fiber into graphene quantum dots, tiny specks of matter with properties expected to prove useful in electronic, optical and biomedical applications. The Rice lab of materials scientist Pulickel Ajayan, in collaboration with colleagues in China, India, Japan and the Texas Medical Center, discovered a one-step chemical process that is markedly...


Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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