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Latest Quantum dot Stories

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...

2012-01-09 19:45:20

Rice University researchers tag excitons in search for hues' clues Rice University researchers have figured out what gives armchair nanotubes their unique bright colors: hydrogen-like objects called excitons. Their findings appear in the online edition of the Journal of the American Chemical Society. Armchair carbon nanotubes — so named for the "U"-shaped configuration of the atoms at their uncapped tips — are one-dimensional metals and have no band gap. This means...

2011-12-31 08:00:00

The Control Systems and Electronics Engineering Sciences are two of the new key sections in the Engineering Sciences category of the Sciences Social Network Sciencia.org. The users of the website monitor 72 scientific journals publishing in these two disciplines which currently contain over 9,000 articles. (PRWEB) December 31, 2011 The Engineering Sciences Social Network Sciencia.org was established to provide the very latest news headlines, references and resources from scientific...

Image 1 - Researchers Use Nanophotonics For Optical Look Inside Living Cells
2011-12-22 05:10:27

An endoscope that can provide high-resolution optical images of the interior of a single living cell, or precisely deliver genes, proteins, therapeutic drugs or other cargo without injuring or damaging the cell, has been developed by researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab). This highly versatile and mechanically robust nanowire-based optical probe can also be applied to biosensing and single-cell electrophysiology. A team...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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