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Warming up for Magnetic Resonance Imaging

May 08, 2008 | User rating: 4.8 / 5 after 13 vote(s) | pda version

Standard magnetic resonance imaging, MRI, is a superb diagnostic tool but one that suffers from low sensitivity, requiring patients to remain motionless for long periods of time inside noisy, claustrophobic ...


Researchers Observe Hydrogen-Bond Exchange

May 08, 2008 | User rating: 4.6 / 5 after 30 vote(s) | pda version

Hydrogen bonds are quite small, on the level of a few angstroms. They can also be passed between two different molecules very quickly, at speeds of tens of times per second. But in spite of these properties, ...


A 'squeeze' in cuprates may explain superconducting temperatures

May 07, 2008 | User rating: 4.6 / 5 after 31 vote(s) | pda version

New experiments at Cornell have verified a theory that variations in the distance between atoms in cuprate superconductors account for differences in the temperature at which the material begins to superconduct. ...


Researchers synthesize compound to flush HIV out of hiding

May 02, 2008 | User rating: 4.9 / 5 after 15 vote(s) | pda version

Any hunter will tell you that when your quarry goes into hiding, you have to flush it out to get a good shot at it. Such is the case with HIV, the virus that causes AIDS.


Graphene-based gadgets may be just years away

Apr 30, 2008 | User rating: 4.8 / 5 after 58 vote(s) | pda version

Researchers at The University of Manchester have produced tiny liquid crystal devices with electrodes made from graphene – an exciting development that could lead to computer and TV displays based on this ...


High-Flying Electrons May Provide New Test of Quantum Theory

Apr 29, 2008 | User rating: 4.8 / 5 after 37 vote(s) | pda version

Researchers at the National Institute of Standards and Technology and Max Planck Institute for Physics in Germany believe they can achieve a significant increase in the accuracy of one of the fundamental constants ...


'Broken Heart' Image the Last for NASA's Long-Lived Polar Mission

Apr 29, 2008 | User rating: 4.5 / 5 after 6 vote(s) | pda version

As far as endings go, this one’s a real heart breaker. NASA’s Polar satellite concludes its successful mission at the end of April with a breathtaking visible-light image of the colorful dancing lights of ...


Physics Advance Leads to a Better Understanding of Optics at the Atomic Scale

Apr 28, 2008 | User rating: 3.3 / 5 after 7 vote(s) | pda version

An advance by North Carolina State University physicists improves our understanding of how light interacts with matter, and could make possible the development of new integrated-circuit technologies that result in faster ...


The Physics of Whipped Cream

Apr 28, 2008 | User rating: 4.3 / 5 after 15 vote(s) | pda version

Let's do a little science experiment. If you have a can of whipped cream in the fridge, go get it out. Spray a generous dollop into a spoon and watch carefully.


Scientists discover exotic quantum state of matter

Apr 24, 2008 | User rating: 4.7 / 5 after 77 vote(s) | pda version

A team of scientists from Princeton University has found that one of the most intriguing phenomena in condensed-matter physics -- known as the quantum Hall effect -- can occur in nature in a way that no one ...


Mining for dark matter

Apr 23, 2008 | User rating: 4.4 / 5 after 18 vote(s) | pda version

While much of the attention in the world of high-energy physics is focused on the Large Hadron Collider nearing completion at the European Center for Nuclear Research (CERN) near Geneva, Switzerland, other physicists, including ...


First atomic-level look at a protein that causes brain disease

Apr 22, 2008 | User rating: 4.4 / 5 after 7 vote(s) | pda version

For the first time, researchers have peered deeply at the atomic level into the protein that causes hereditary cerebral amyloid angiopathy (CAA) -- a disease thought to cause stroke and dementia. The study pinpointed a tiny ...


Ceramic, heal thyself

Apr 17, 2008 | User rating: 4 / 5 after 12 vote(s) | pda version

A new computer simulation has revealed a self-healing behavior in a common ceramic that may lead to development of radiation-resistant materials for nuclear power plants and waste storage.


Graphene used to create world's smallest transistor

Apr 17, 2008 | User rating: 4.6 / 5 after 50 vote(s) | pda version

Researchers have used the world's thinnest material to create the world's smallest transistor, one atom thick and ten atoms wide.


Researchers Make Breakthrough in Nanotechnology by Uncovering Conductive Property of Carbon-based Molecules

Apr 17, 2008 | User rating: 4.5 / 5 after 33 vote(s) | pda version

University of Pittsburgh researchers have discovered that certain organic—or carbon-based—molecules exhibit the properties of atoms under certain circumstances and, in turn, conduct electricity as well as metal. Detailed ...


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