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metamaterials News
New resonator overcomes obstacle to ultimate nanolaser
SAN DIEGO – Two very low power lasers that produce the smallest continuous-wave, room-temperature telecommunications frequency demonstrated to date may be a step closer to creating virus-size nanolasers. The new instruments – a 1.5-µm laser and a 1.38-µm “thresholdless” laser that funnels all of its protons into lasing without any waste – were developed by electrical engineers in the Ultrafast and Nanoscale Optics Group at the University of California, San Diego (UCSD),...
Novel Plasmonic Material Discovered
WEST LAFAYETTE, Ind., March 30, 2012 — Titanium nitride, the first nonmetal to be added to the short list of surface-plasmon-supporting materials, could bridge the gap between optics and electronics. The advance could point the way to a new class of optoelectronic devices with...
IR Material Creates Holograms
DURHAM, N.C., March 19, 2012 — A newly developed metamaterial construct could create holograms in the infrared range for the first time.
Femtolaser Pulse Creates 3-D Nanostructures
CAMBRIDGE, Mass., March 9, 2012 — A new fabrication process using femtosecond lasers creates 3-D nanostructures in materials, an essential step toward creating invisibility cloaks and other advanced materials that bend light in unusual ways.
Plasmonic nanoantennas promise optics with strange new abilities
WEST LAFAYETTE, Ind. – Arrays of plasmonic nanoantennas can abruptly change the phase of light, potentially enabling more powerful microscopes, computers and telecommunications systems. “By abruptly changing the phase, we can dramatically modify how light...
New Resonator Overcomes Obstacle to Ultimate Nanolaser
SAN DIEGO, Feb. 10, 2012 — Two very low power lasers that produce the smallest continuous-wave, telecommunications frequency demonstrated at room temperature to date may be a step toward the development of the “ultimate” nanolaser.
Superlens Nears Development, in Theory
HOUGHTON, Mich., Jan. 11, 2012 — Using surface plasmons, metamaterials can be stretched to refract lightwaves from the infrared, visible and ultraviolet wavelengths, a model created at Michigan Technological University suggests. Such materials could be used to build superlenses so...
‘Plasmonic Nanoantennas’ Promising for Optics
WEST LAFAYETTE, Ind., Jan. 3, 2012 — Arrays of tiny “plasmonic nanoantennas” have been developed that can precisely manipulate light in new ways, potentially enabling optical innovations such as more powerful microscopes, computers and telecommunications. Researchers...
Chemically assembled metamaterials pave way for superlenses
ITHACA, N.Y. – A new metamaterial can self-assemble 3-D structures with nanoscale features, a feat that could make “superlenses” to image proteins, DNA and viruses. Metamaterials offer new ways to manipulate light via negative refractive indices...
Putting More Than Glass in the Toolbox
Jan 1, 2012 — Plastics, glass, metamaterials, anisotropic materials – even smartphones – are teaming up to create a future where optical systems will be smaller, cheaper, lighter and more capable. “Optical materials have gotten a lot better over...
Who Has the Conn?
Jan 1, 2012 — The “conn” is the area of the submarine from which the rudder is controlled and where the periscope is located. Fans of sub movies – and any submariners among our readers – know that “Who has the conn?” is never...
UArizona Receives $500K for THz Imager
TUCSON, Ariz., Dec. 6, 2011 — The University of Arizona College of Engineering has received half a million dollars to develop a unique terahertz imaging instrument. The imager will generate terahertz emissions and analyze how spectra in this range are absorbed and reflected by...
Metamaterials Pave Way for Superlens
ITHACA, N.Y., Nov. 11, 2011 — Casting tiny, oddly shaped metal structures inside plastic molds could give a boost to creating metamaterials for making “superlenses” that can image proteins, viruses and DNA. Metamaterials, which offer new ways to manipulate...
Plasmonics, Nanophotonics Hybrid Promises Powerful Information Processing
WEST LAFAYETTE, Ind., Nov. 1, 2011 — Metamaterials and the merging of two technologies under development are promising the emergence of new quantum information systems far more powerful than today’s computers. The technology, which involves a plasmonics and nanophotonics hybrid,...
Tunable graphene device puts terahertz to work
BERKELEY, Calif. – A microscale graphene device that responds strongly to terahertz light and that can be precisely tuned is the first tool in a kit for putting terahertz light to work. At the heart of the device, developed by scientists at Lawrence Berkeley...
Special optoelectronic properties make 3-D photonic crystals shine
CHAMPAIGN, Ill. – A newly demonstrated 3-D photonic crystal with exceptional optical and electrical properties will open new avenues for solar cells, metamaterials, lasers and more. “For many years, people have demonstrated 3-D photonic crystals with...
Undergrad solves cloaking puzzle with slow light
ST. ANDREWS, UK – An undergraduate at the University of St. Andrews has overcome a major hurdle in the development of invisibility cloaks by adding an optical device into the cloak’s design that not only remains invisible itself, but also has the ability to...
$13M UMich Center to Advance Nanophotonics
ANN ARBOR, Mich., Sept. 15, 2011 — A new $13 million National Science Foundation center based at the University of Michigan will enable the development of high-tech photonic materials that could promote advances in invisibility cloaking, nanoscale lasers, high-efficiency lighting and...
“Event cloaks” could be the perfect crime tool
LONDON – If you could pull off the ultimate bank heist without getting caught, would you try it? The perfect crime is possible – in principle – according to scientists at Imperial College London, who have described a new type of invisibility...
Metamaterials: Photonic Sleight of Hand
Sep 1, 2011 — Invisibility cloaks, perfect imaging, enhanced photovoltaic light collection, all-optical memories and biosensing are just some of the intriguing applications of metamaterials currently grabbing headlines in scientific journals. The field of...
One-atom-thick optical devices proposed
PHILADELPHIA – One-atom-thick metamaterials that can now be made by controlling the conductivity of sheets of graphene could have wide applications in imaging, signal processing and telecommunications. The study of metamaterials is based on the idea that...
Magnetized Common Metals Refract Negatively
VIENNA, Austria, Aug. 19, 2011 — While it is generally believed that negative refraction cannot be achieved with natural materials, scientists at the Vienna University of Technology (TU Vienna) report that when common metals such as cobalt and iron are placed in a magnetic field,...
Optical cloaking achieved in visible spectrum
KARLSRUHE, Germany – The Karlsruhe invisibility cloak has been refined so that it is now effective in the visible spectral range. “Seeing something invisible with your own eyes is an exciting experience,” said Joachim Fischer and Tolga Ergin, physicists and...
Transformation Optics Bends all the Rules
Aug 1, 2011 — From invisibility cloaks to hyperlenses, and photovoltaic concentrators to superresolution microscopy, transformation optics makes big promises. In the same way that water flows can be manipulated using dams and channels, light can be made to...
First Optoelectronic 3-D Photonic Crystal Developed
CHAMPAIGN, Ill., July 25, 2011 — Using an epitaxial approach, the first optoelectronically active 3-D photonic crystal has been demonstrated – an advance that could open new avenues for solar cells, lasers, LEDs, metamaterials and more. "We’ve discovered a way to change...
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April 2024
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