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silicon dioxide News
Video: Nanoantennas as Photo Film Boost Optical Data Storage
URBANA, Ill., July 18, 2014 — Unique nanoantennas can be used like traditional photographic film to record light at distances smaller than its own wavelength. This could mean big things for the future of optical data storage. To make the new pillar bowtie nanoantenna (pBNA) arrays, researchers at the University of Illinois at Urbana-Champaign used gold nanoantennas on silicon dioxide pillars. These act as a multifunctional plasmonic film that can record near-field optical information. The film is used with a standard
Inexpensive Coating Cuts Glare, Boosts Efficiency in Solar Panels
LOUGHBOROUGH, England, April 15, 2014 — A coating similar to that used on eyeglasses could reduce glare and boost efficiency for photovoltaics.
Nano whispering gallery reduces semiconductor emission lifetime
PHILADELPHIA – Applying the concept of whispering galleries to nanoscale devices drastically reduces emission lifetimes, a key property of light-emitting semiconductors, and shows great potential for the development of new ultrafast photonic devices. ...
Emission Lifetime in Semiconductors Reduced
PHILADELPHIA, July 29, 2011 — Scientists at the University of Pennsylvania have reduced the emission lifetime for photovoltaic devices by applying the “whispering galleries” concept to semiconducting nanowires. In architecture, a whispering gallery is a dome or a...
Flexible Films for Photovoltaics
FREISING, Germany, June 3, 2011 — Flexible plastic films are now being used to protect solar cells from the elements, a move that could significantly reduce the production cost of manufacturing a photovoltaic module. Instead of working with individual glass plates, the solar cells...
Magnetized Nanorods Diffract Visible Light
RIVERSIDE, Calif., March 29, 2011 — By coating iron oxide nanorods with silica, scientists have found that when they apply a magnetic field, the nanorods align themselves to one another like a set of tiny flashlights, which could have potential for a wide variety of color displays. ...
Edible optical tags make a stand against counterfeit drugs
HONOLULU – The global pharmaceutical market is worth $800 billion annually, and approximately 10 percent of this is thought to be counterfeit. Most drug manufacturers employ printed codes or serial numbers, bar codes or hologram stickers on packaging to...
For better LEDs, two V’s could mean victory
Aug 1, 2010 — For light-emitting diodes, a brighter, more efficient and groovier future may be at hand. The result could be billions of dollars of annual energy savings, say researchers from the National Institute of Advanced Industrial Science and Technology...
NEMS Oscillators May Detect Toxins
ITHACA, N.Y., March 18, 2010 - By watching how energy moves across a tiny device Cornell researchers are a step closer to creating extraordinarily tiny sensors that can instantly recognize harmful substances in ...
Electrons Lured From Graphene
NEW BRUNSWICK, N.J., Oct. 21, 2009 – Rutgers researchers discovered novel electronic properties in 2-D sheets graphene that could one day be the heart of speedy and powerful electronic devices. The new findings, previously considered possible by physicists but only now being seen in...
Fabricating Photonic Quantum Circuits in Silicon
Jul 1, 2008 — The future of quantum technologies could be written in sand, according to researchers from the University of Bristol in the UK. A group at the institution demonstrated high-fidelity quantum photonic circuits using waveguides made of silicon dioxide,...
Laser Mirror Could Greatly Improve Optical Devices
BERKELEY, Calif., Feb. 13, 2007 -- Engineers have created a high-performance mirror that is thinner, operates across a wider spectrum of light and is easier to make than current high-grade mirrors. The development could overcome the hurdles stalling semiconductor laser advancement...
Silicon-on-Insulator Switch Exhibits Fast Response
Dec 1, 2003 — Planar waveguide devices based on silicon-on-insulator architecture offer the enticing possibility of miniaturization because of the high difference in refractive index between silicon and air (Δn = 2.45) or between silicon and silicon dioxide...
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April 2024
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