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Sun, 21 Sep 2014 14:51:18 EDT
Smallest possible diamonds form ultra-thin nanothreads
For the first time, scientists have discovered how to produce ultra-thin 'diamond nanothreads' that promise extraordinary properties, including strength and stiffness greater than that of today's strongest nanotubes and polymers. The threads have a structure that has never been seen before.
Sun, 21 Sep 2014 14:51:10 EDT
Engineered proteins stick like glue -- even in water
Researchers have found new adhesives based on mussel proteins could be useful for naval or medical applications. To create their new waterproof adhesives, researchers engineered bacteria to produce a hybrid material that incorporates naturally sticky mussel proteins as well as a bacterial protein found in biofilms -- slimy layers formed by bacteria growing on a surface. When combined, these proteins form even stronger underwater adhesives than those secreted by mussels.
Sun, 21 Sep 2014 14:51:08 EDT
Magnetic fields make the excitons go 'round: New way to improve efficiency of solar cells
A major limitation in the performance of solar cells happens within the photovoltaic material itself: When photons strike the molecules of a solar cell, they transfer their energy, producing quasi-particles called excitons -- an energized state of molecules. That energized state can hop from one molecule to the next until it's transferred to electrons in a wire, which can light up a bulb or turn a motor.
Sun, 21 Sep 2014 14:50:13 EDT
New 'star' shaped molecule breakthrough
Scientists have generated a new star-shaped molecule made up of interlocking rings, which is the most complex of its kind ever created. Known as a 'Star of David' molecule, scientists have been trying to create one for over a quarter of a century.
Sun, 21 Sep 2014 14:50:09 EDT
A Breakthrough in Electron Microscopy: Scientists reconstruct third dimension from a single image
Imagine that you want to find out from a single picture taken of the front of a house, what the building looks like from behind, whether it has any extensions or if the brickwork is damaged, and how many rooms are in the basement.  Sounds impossible? Not in the nanoworld. Scientists have developed a new method with which crystal structures can be reconstructed with atomic precision in all three dimensions.
Sun, 21 Sep 2014 14:50:07 EDT
From light into matter, nothing seems to stop quantum teleportation
Physicists have succeeded in teleporting the quantum state of a photon to a crystal over 25 kilometers of optical fiber. The experiment constitutes a first, and simply pulverizes the previous record of 6 kilometers achieved ten years ago by the same team. Passing from light into matter, using teleportation of a photon to a crystal, shows that, in quantum physics, it is not the composition of a particle which is important, but rather its state, since this can exist and persist outside such extreme differences as those which distinguish light from matter.
Sun, 21 Sep 2014 14:50:05 EDT
Global warming: Dwindling chances to stay below 2°C warming
Carbon dioxide emissions continue to track the high end of emission scenarios, eroding the chances to keep global warming below 2°C, and placing increased pressure on world leaders ahead of the United Nations Climate Summit on the 23rd September.
Fri, 19 Sep 2014 16:54:40 EDT
A nanosized hydrogen generator
Researchers have created a small scale “hydrogen generator” that uses light and a two-dimensional graphene platform to boost production of the hard-to-make element. The research also unveiled a previously unknown property of graphene. The two-dimensional chain of carbon atoms not only gives and receives electrons, but can also transfer them into another substance.
Fri, 19 Sep 2014 14:28:43 EDT
Solar-cell efficiency improved with new polymer devices
New light has been shed on solar power generation using devices made with polymers. Researchers identified a new polymer -- a type of large molecule that forms plastics and other familiar materials -- which improved the efficiency of solar cells. The group also determined the method by which the polymer improved the cells' efficiency. The polymer allowed electrical charges to move more easily throughout the cell, boosting the production of electricity -- a mechanism never before demonstrated in such devices.
Fri, 19 Sep 2014 14:28:41 EDT
Climate Change: Dwindling wind may tip predator-prey balance
Rising temperatures and shifting precipitation patterns may get the lion’s share of our climate change attention, but predators may want to give some thought to wind, according to a zoologist’s study, which is among the first to demonstrate the way “global stilling” may alter predator-prey relationships.
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