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Viscosity at the nanoscale: 50-year-old intriguing puzzle solved

At a snail's pace - this is how proteins should move inside living cells where viscosity of environment exceeds the viscosity of water even by million times. However, proteins move not much slower than in water! While looking for a solution to this puzzle, scientists from the Institute of Physical Chemistry of the PolishAcademy of Sciences discovered a new principle of physics.

Posted: Jun 25th, 2010

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Transformation-mediated ductility in metallic glasses

Metallic glasses are - just as other types of glasses- brittle materials. This property sets a limit to the possibilities of their technical use. Researchers have now developed a mechanism that enables metallic glasses to become ductile under tensile loading.

Posted: Jun 25th, 2010

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Elektronen im Verzug

Anders als bislang angenommen werden Elektronen bei der Fotoemission verzoegert aus einem Atom katapultiert.

Posted: Jun 25th, 2010

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Delayed time zero in photoemission

Until now, it has been assumed that during photoemission the electron start moving out of the atom immediately after the impact of the photon. This point in time can be detected and has so far been considered as coincident with the arrival time of the light pulse, i.e. with 'time zero' in the interaction of light with matter. Using their ultra-short time measurement technology, physicists have now tested this assumption.

Posted: Jun 24th, 2010

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Researchers develop living, breathing human lung-on-a-chip

Researchers from the Wyss Institute for Biologically Inspired Engineering at Harvard University, Harvard Medical School and Children's Hospital Boston have created a device that mimics a living, breathing human lung on a microchip. The device, about the size of a rubber eraser, acts much like a lung in a human body and is made using human lung and blood vessel cells.

Posted: Jun 24th, 2010

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Gene therapy a step closer to mass production

EUREKA project E! 3371 Gene Transfer Agents has made great advances in the development of novel non-viral carriers able to introduce genetic material into the target cells. These new agents, derivatives of cationic amphiphilic 1,4-dihydropyridine (1,4-DHP), avoid the problems of the recipient's immune system reacting against a viral carrier.

Posted: Jun 24th, 2010

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World first for quantum memory storage

An Australian National University-led team has developed the most efficient quantum memory for light in the world, taking us closer to a future of super-fast computers and communication secured by the laws of physics.

Posted: Jun 24th, 2010

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Depth charge: Using atomic force microscopy to study subsurface structures

Over the past couple of decades, atomic force microscopy (AFM) has emerged as a powerful tool for imaging surfaces at astonishing resolutions - fractions of a nanometer in some cases. But suppose you're more concerned with what lies below the surface? Researchers have shown that under the right circumstances, surface science instruments such as the AFM can deliver valuable data about sub-surface conditions.

Posted: Jun 24th, 2010

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