News tagged with visible
Proposed gamma-ray laser could emit 'nuclear light'
(PhysOrg.com) -- Building a nuclear gamma-ray laser has been a challenge for scientists for a long time, but a new proposal for such a device has overcome some of the most difficult problems. In the new study, Eugene Tkalya ...
May 02, 2011 |
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Invisibility carpet cloak can hide objects from visible light
(PhysOrg.com) -- Most of the invisibility cloaks that have been demonstrated to date conceal objects at frequencies that are not detectable by the human eye. Designing invisibility cloaks that can conceal ...
Jun 15, 2011 |
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Plasmonic device converts light into electricity
(PhysOrg.com) -- While the most common device for converting light into electricity may be photovoltaic (PV) solar cells, a variety of other devices can perform the same light-to-electricity conversion, such ...
Nov 09, 2011 |
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Nano-LEDs emit full visible spectrum of light
(PhysOrg.com) -- Physicists from Taiwan have designed and fabricated nano-sized light-emitting diodes (LEDs) that emit light spanning the entire visible spectrum. Although the tiny full-color LEDs aren't intended ...
Jun 17, 2011 |
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Cantilever bends repeatedly under light exposure for continuous energy generation
(PhysOrg.com) -- With the goal to enable small electronic devices to harvest their own energy, researchers have designed a device that can convert light and thermal energy into electricity. When exposed to ...
Oct 05, 2010 |
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Looking at quantum gravity in a mirror
Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. At this scale, new phenomena could arise. However, the Planck-scale ...
Mar 18, 2012 |
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Alberto now a tropical depression
Infrared satellite imagery from NASA's Aqua satellite revealed Alberto weakened from a tropical storm to a tropical depression as it appears more disorganized. At 10:30 a.m. EDT on May 21, Tropical Storm Alberto ...
Space & Earth / Earth Sciences
May 22, 2012 |
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Improving on the amazing: Scientists seek new conductors for metamaterials
(Phys.org) -- Scientists at the U.S. Department of Energy’s Ames Laboratory have designed a method to evaluate different conductors for use in metamaterial structures, which are engineered to exhibit ...
Apr 24, 2012 |
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A breakthrough in superlens development: Cheap, simple lens to let us see a single virus
A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics. It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in ...
Jan 09, 2012 |
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'Darkest' world enlightens astronomers about mysterious light-gobbling planet
(PhysOrg.com) -- A giant Jupiter-like gas planet has been revealed to be the most light-thirsty object in the known universe -- a finding that may help astronomers better understand a mysterious characteristic ...
Sep 27, 2011 |
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Infrared Nanotube Films Offer Advantages for Solar Cells and More
(PhysOrg.com) -- Researchers have already known that carbon nanotube thin films have mechanical and conductive advantages that could make them useful as electrodes in solar cells, solid state lighting, and ...
Mar 11, 2009 |
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Will carbon nanotubes replace indium tin oxide?
(PhysOrg.com) -- Up until now, George Grüner tells PhysOrg.com, most of the studies regarding the properties - and uses - of carbon nanotubes have been restricted to the visible spectral range. “We, however, were interested in the ...
Nanotechnology / Nanomaterials
Mar 09, 2009 |
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Novel negative-index metamaterial that responds to visible light designed
A group of scientists led by researchers from the California Institute of Technology has engineered a type of artificial optical material—a metamaterial—with a particular three-dimensional structure such that ...
Apr 22, 2010 |
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New lens doubles the resolution of conventional microscopes
(PhysOrg.com) -- Conventional lenses can resolve structures around 200 nanometers (nm) in size, but scientists in Europe have for the first time developed a lens capable of achieving optical resolution of ...
Mar 25, 2011 |
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New approach to invisibility cloaking gets much closer to the science-fiction version
The idea of being able to become invisible, especially by simply covering up a person or an object with a special cloak, has a perennial appeal in science-fiction and fantasy literature. In recent years, researchers ...
Jan 25, 2011 |
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