Search results for concentric rings:
Silicon photonic crystals key to optical cloaking
Jun 25, 2008 |
4.5 / 5 (43) |
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In computer simulations, the researchers have demonstrated an approximate cloaking effect created by concentric rings of silicon photonic crystals. The mathematical proof brings scientists a step closer to a practical solution ...
'Invisibility cloak' could protect against earthquakes
Jul 20, 2009 |
4.4 / 5 (23) |
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(PhysOrg.com) -- Research at the University of Liverpool has shown it is possible to develop an 'invisibility cloak' to protect buildings from earthquakes.
'Gecko vision': Key to the multifocal contact lens of the future?
May 07, 2009 |
4.4 / 5 (5) |
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Nocturnal geckos are among the very few living creatures able to see colors at night, and scientists' discovery of series of distinct concentric zones may lead to insight into better cameras and contact lenses.
New model of a nuclear pore complex is based on crystal structure of its key component
Biology /
Jan 16, 2008 |
3.3 / 5 (3) |
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Everything that goes in and out of a cell’s nucleus must pass through one of its nuclear pores. In the second nuclear pore study to come out of Rockefeller University in as many months, researchers have determined the crystal ...
Cave's climate clues show ancient empires declined during dry spell
Space & Earth / Earth Sciences
Dec 04, 2008 |
4.3 / 5 (34) |
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(PhysOrg.com) -- The decline of the Roman and Byzantine empires in the Eastern Mediterranean more than 1,400 years ago may have been driven by unfavorable climate changes.
Growing geodesic carbon nanodomes
Oct 12, 2009 |
5 / 5 (4) |
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Researchers analyzing the assembly of graphene (sheets of carbon only one atom thick) on a surface of iridium have found that the sheets grow by first forming tiny carbon domes. The discovery offers new insight ...
Protect children first with H1N1 flu vaccine, says national pediatric disease expert (w/ Video)
Oct 01, 2009 |
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The optimal way to control swine flu, the new H1N1 virus that emerged as a global threat in 2009, is to vaccinate children with the planned H1N1 flu vaccine, says the co-director of the University of Alabama at Birmingham ...
Dying star creates fantasy-like sculpture of gas and dust
Sep 09, 2004 |
5 / 5 (3) |
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A new study of a large number of planetary nebulae has revealed that rings, such as those seen here around the Cat's Eye Nebula, are much more common that thought so far and have been found in at least one third ...
Cellular Construction Methods Emulated
Nanotechnology / Bio & Medicine
Mar 05, 2008 |
4.1 / 5 (7) |
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Not only is our body made of individual organs, our cells themselves are made of tiny organelles, a variety of separate compartments that fulfill different tasks. Such functional, nanostructured systems would also be useful ...
Panasonic develops a next-generation robust image sensor
May 14, 2007 |
4 / 5 (6) |
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Panasonic today announced the development of a robust and lightfast image sensor for the next generation.
Scientists Create Light-Bending Nanoparticles
Nanotechnology / Nanomaterials
Mar 03, 2009 |
4.5 / 5 (20) |
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(PhysOrg.com) -- Metallic nanoparticles and other structures can manipulate light in ways that are not possible with conventional optical materials. In a recent example of this, Rice University researchers ...
Oscillating Pattern in Nanoparticle Crystallisation
Nanotechnology / Nanomaterials
Jun 30, 2006 |
4.4 / 5 (9) |
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In order to survive, biological systems need to form patterns and organise themselves. Scientists at the Max Planck Institute for Colloids and Interfaces in Potsdam, Germany, have now combined self-organisation ...
Researchers create the first thermal nanomotor in the world
Apr 15, 2008 |
4.4 / 5 (8) |
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Researchers from the UAB Research Park have created the first nanomotor that is propelled by changes in temperature. A carbon nanotube is capable of transporting cargo and rotating like a conventional motor, but is a million ...
SMART-1's tribute to Cassini
Jun 20, 2005 |
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This image from SMART-1 was dedicated to the Cassini-Huygens mission team at the occasion of the European Geoscience Union conference in Vienna, April 2005, when new results from both missions were presented.
Inexpensive 'adaptive optics' achieved by Sandia's optical clamp
Jul 03, 2007 |
3.8 / 5 (4) |
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The ingenious system called adaptive optics, known for its computer control of subdivided, individually angled mirrors, is an efficient but expensive way to correct distortions in laser beams. The mirrors ...
