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metamaterial News
Material Gives Visible Light an Infinite Wavelength
AMSTERDAM & PHILADELPHIA, Oct. 16, 2013 — A new metamaterial made from stacks of silver and silicon nitride nanolayers gives visible light a nearly infinite wavelength, an international team reports. The material could be used to make novel optical components or more efficient LEDs. Light’s phase velocity (how the peaks and valleys of the wave move) and group velocity (the transport of energy) dictate how it propagates in a material. Energy transport is limited to the speed of light, according to Einstein’s laws, but th...
Spray-on flat lens works in the UV
GAITHERSBURG, Md. – A new, easily fabricated metamaterial-based flat lens that bends and focuses UV light could improve photolithography, nanoscale manipulation and manufacturing, and even high-resolution 3-D imaging, say its developers, scientists working at the...
Fund Makes First Investment in Photonics Tech
BOSTON and MOSCOW, June 19, 2013 — A new venture capital fund has made its first round of investments in companies seeking to commercialize technology related to nanophotonics, metamaterials and quantum information processing. Quantum Wave Fund (QWave), a global venture capital fund...
Metamaterials observe photonic spin Hall effect
BERKELEY, Calif. – A metamaterial surface constructed of V-shaped gold nanoantennas was used to obtain the strongest signal yet of the photonic spin Hall effect – a quantum mechanical optical phenomenon that could play a prominent role in the future of...
Spray-On Flat Lens Works in the UV
GAITHERSBURG, Md., May 24, 2013 — A metamaterial-based flat lens that’s easy to fabricate and that can bend and focus UV light could improve photolithography, nanoscale manipulation and manufacturing, and even high-resolution 3-D imaging, say scientists at the National...
Moon-Shaped Metamaterial Broadens Manipulatable Bandwidths
STANFORD, Calif., May 9, 2013 — A new engineered broadband material crafted from artificial atoms more than doubles the range of light wavelengths that can be manipulated by such metamaterials, a development that could lead to perfect microscope lenses or invisibility cloaks....
Spin-controlled Photonics Could Streamline Communications Components
HAIFA, Israel, May 9, 2013 — A new class of metamaterials with the potential to control the spread of light more easily could help in the design of more streamlined components for communications technology. The components used today in communications technology are bulky and...
Metamaterials Observe Photonic Spin Hall Effect
BERKELEY, Calif., March 22, 2013 — A metamaterial surface constructed of V-shaped gold nanoantennas was used to obtain the strongest signal yet of the photonic spin Hall effect — a quantum mechanical optical phenomenon that could play a prominent role in the future of computing.
Electrical Signals Dictate Optical Properties
SOUTHAMPTON, England, March 20, 2013 — A new type of metamaterial that can be controlled by electrical signals has optical properties that are three orders of magnitude faster than previous electrically reconfigurable materials.
Near-perfect optical absorber developed
CAMBRIDGE, Mass. – A tunable device coated with a film 100 times thinner than the wavelength of incident light absorbs 99.75 percent of a specific mid-infrared band on demand, potentially expanding thermal detection and energy harvesting applications. Designed by...
Material Absorbs Nearly 100% of IR Light
CAMBRIDGE, Mass., Nov. 27, 2012 — An ultrathin, tunable device developed at Harvard absorbs 99.75% of infrared light on demand and, when activated, looks like a black blob to IR cameras. The near-perfect absorber could expand the possibilities for energy harvesting and thermal...
Photonic Gel a Metamaterial with Myriad Uses
HOUSTON and CAMBRIDGE, Mass., Oct. 11, 2012 — Thin films that change color under certain conditions and are incredibly cheap to make may inform future multiband optical elements in laser-driven systems or high-contrast displays, among other applications.
System simultaneously uses loss, gain
ERLANGEN, Germany – Light absorption or loss, usually seen as a disadvantage in optical metamaterials, actually can have useful applications. Physicists at Friedrich Alexander University Erlangen-Nuremberg borrowed a concept from quantum field theory in designing a new...
Metamaterial Moves Photons in Single Direction
CAMBRIDGE, Mass., Aug. 15, 2012 — A new metamaterial can channel photons in one direction, and could point the way to more efficient and faster computer chips that use light to move data.
System Simultaneously Uses Loss, Gain
ERLANGEN, Germany, Aug. 10, 2012 — Light absorption (loss), usually seen as a disadvantage in optical metamaterials, has been shown to have useful applications.
Metamaterial Manipulates Light at Will
DURHAM, N.C., Aug. 2, 2011 — Much in the same way that electronics manipulate electrons, Duke University researchers have developed a material that allows them to manipulate light at will, a discovery that could help replace electronic components with optical technology. ...
Metamaterial Engineers Blackbody Radiation
CHESTNUT HILL, Mass., July 27, 2011 — Thermophotovoltaics may get a boost from a new designer metamaterial that can engineer emitted blackbody radiation with an efficiency beyond the natural limits imposed by the material's temperature. A blackbody object represents a theorized...
Cloaking Achieved in Visible Spectrum
KARLSRUHE, Germany, June 2, 2011 — The Karlsruhe invisibility cloak has been refined such that it is now effective in the visible spectral range. "Seeing something invisible with your own eyes is an exciting experience," say Joachim Fischer and Tolga Ergin, physicists and...
‘Space-time’ Cloak Could Hide History
LONDON, Nov. 17, 2010 — Theoretical physicists have taken the idea of creating an invisibility cloak and broadened it to include the object’s movement. Such a "space-time cloak" could be used to hide events, they suggest. Previously a team led by professor Sir John...
Flexible Smart Material Cloaks Objects
FIFE, Scotland, Nov. 5, 2010 — Using tiny atoms that can interact with light, researchers at the University of St. Andrews have developed a flexible new ‘smart’ material that could theoretically appear invisible to the naked eye. It is the first practical...
THz Semiconductor Laser Revealed
CAMBRIDGE, Mass. & LEEDS, England, Aug. 10, 2010 — Applications in terahertz science and technology may be getting a boost thanks to a new terahertz (THz) semiconductor laser that emits beams with a much smaller divergence than conventional THz laser sources. The metamaterial patterns are...
Novel Metamaterial Responds to Visible Light
PASADENA, Calif., April 27, 2010 — An artificial optical material with a three-dimensional structure has been engineered to bend light in the “wrong” direction from what normally would be expected, irrespective of the angle of the approaching light. This new type of negative-index...
Virtual Cloaking Unveiled
WASHINGTON, Nov. 16, 2009 – Researchers at Germany’s Karlsruhe Institute of Technology created a virtual visualization tool that shows what a partially or completely cloaked object would really look like. Even as an invisibility cloak hides an object, the cloak itself is...
Electronic Metamaterial Made
BASEL, Switzerland, July 17, 2009 -- Physicists and chemists in Switzerland defied the belief that electrical resistance of a material can't be adjusted by developing thin films with controllable electronic properties. The discovery could have a big impact on future applications in...
New Cloak vs. Cloak Classic
DURHAM, N.C., Jan. 15, 2009 – A new type of device that can render an object invisible in visual light has been revealed by the same research team that constructed the first prototype in 2006. The new device is significantly more sophisticated at cloaking in a broad range of...
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June 2024
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