News tagged with negative refractive index
Bending light the 'wrong' way
(PhysOrg.com) -- Scientists have tried this with sophisticated meta-materials, but at the Vienna University of Technology (TU Vienna) it has now been done with simple metals; materials with a negative refractive ...
Aug 18, 2011 |
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Light twists rigid structures in unexpected nanotech finding
(PhysOrg.com) -- In findings that took the experimenters three years to believe, University of Michigan engineers and their collaborators have demonstrated that light itself can twist ribbons of nanoparticles.
Mar 17, 2010 |
4.9 / 5 (21) |
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Search results for negative refractive index
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 |
4.8 / 5 (5) |
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First, fast, and faster
(Phys.org) -- Scientists in PML's Quantum Measurement Division have produced the first superluminal light pulses made by using a technique called four-wave mixing, creating two separate pulses whose peaks ...
Apr 06, 2012 |
4.6 / 5 (25) |
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Tailored optical material from DNA: Nano spiral staircases modify light
In the human body genetic information is encoded in double-stranded deoxyribonucleic acid building blocks, the so-called DNA. Using artificial DNA molecules, an international team of scientists headed by the ...
Nanotechnology / Nanomaterials
Mar 14, 2012 |
4.5 / 5 (2) |
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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 |
4.8 / 5 (29) |
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Study resolves century-long debate over how to describe electromagnetic momentum density in matter
(PhysOrg.com) -- Researchers from the NIST Center for Nanoscale Science and Technology and the University of British Columbia have shown that the interaction between a light pulse and a light-absorbing object, including the ...
Dec 29, 2011 |
4.4 / 5 (14) |
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'Plasmonic nanoantennas' show promise in optical innovations
(PhysOrg.com) -- Researchers have shown how arrays of tiny "plasmonic nanoantennas" are able to precisely manipulate light in new ways that could make possible a range of optical innovations such as more powerful ...
Dec 22, 2011 |
4.4 / 5 (7) |
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New metamaterial allows transmission gain while retaining negative refraction property
A new type of active metamaterial that incorporates semiconductor devices into conventional metamaterial structures is demonstrating an ability to have power gain while retaining its negative refraction property, a first ...
Nov 09, 2011 |
5 / 5 (4) |
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Chemically assembled metamaterials may lead to superlenses
(PhysOrg.com) -- Nanomanufacturing technology has enabled scientists to create metamaterials -- stuff that never existed in nature -- with unusual optical properties. They could lead to "superlenses" able ...
Nov 02, 2011 |
5 / 5 (9) |
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Artificial nanoparticles influence the heart rate
In light of the increasing demand for artificial nanoparticles in medicine and industry, it is important for manufacturers to understand just how these particles influence bodily functions and which mechanisms ...
Nanotechnology / Bio & Medicine
Aug 01, 2011 |
5 / 5 (1) |
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Engineers develop material that could speed telecommunications
Researchers at Columbia Engineering School have demonstrated that light can travel on an artificial material without leaving a trace under certain conditions, technology that would have many applications from ...
Jul 25, 2011 |
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List of search results for negative refractive index
