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Basic Science News
Theory Describes 'Molecules' of Light
COLLEGE PARK, Md., Sept. 16, 2015 — New theoretical work shows how two photons can be bound together in much the same way that atoms form molecules. If demonstrated experimentally, the phenomenon could be exploited to enhance photon detectors and enable quantum computing. "Lots of modern technologies are based on light, from communication technology to high-definition imaging," said researcher Alexey Gorshkov. "Many of them would be greatly improved if we could engineer interactions between photons." Two
Light-Sensitive Medium Drives Nanoparticle Assembly
REHOVOT, Israel, Sept. 14, 2015 — Light has long been used to trigger self-assembly of nanoparticles. A new approach may be able to achieve the same end more reliably by focusing light on the medium containing the nanoparticles instead of the nanoparticles themselves. The new...
Individual Photons Squeezed by QDs
CAMBRIDGE, England, Aug. 31, 2015 — Quantum dots can provide the control necessary to "squeeze" individual photons — a feat previously considered impossible to observe. Squeezing is quantum phenomenon that produces an extremely low-noise signal potentially useful in technology...
Spin Hall Effect Called Fundamental Property of Light
SAITAMA, Japan, June 25, 2015 — The spin of incident light determines the direction of propagation of evanescent waves along a surface, according to researchers at the Riken Center for Emergent Matter Science. The finding demonstrates that the quantum spin Hall effect, already...
Angular Acceleration Observed in Helical Light Beams
JOHANNESBURG, April 23, 2015 — The orbital angular momentum of laser light traveling along a helical path through space can accelerate and decelerate as it spins into the distance. This is the first time that angular acceleration has been observed with light, according to...
Inorganic Compound Could Replace Laser Dyes
MADRID and PRAGUE, Jan. 14, 2015 — An inorganic compound may serve as a longer-lasting replacement for laser dyes in a variety of applications. A team from the Spanish National Research Council (CSIC) and the Academy of Sciences of the Czech Republic, developed a laser whose medium...
Optical Surfaces to Supply Beam Reducers for European Research Center
KENLEY, England, Dec. 1, 2014 — Optical Surfaces Ltd. will provide six motorized beam reducers for the British Science & Technology Facilities Council’s Central Laser Facility. The beam reducers will be used for CW alignment and “on shot” diagnostics, with a...
Coating Reflects Sunlight, Radiates Heat to Cool Buildings
STANDFORD, Calif., Nov. 26, 2014 — A thin-film coating has the potential to cool buildings by simultaneously radiating heat from inside and reflecting sunlight. Developed by a team at Stanford University, the 1.8-µm-thick photonic radiative cooling film is made of seven layers...
Breaking Ground Now: Next-Gen Giant Telescopes
Nov 5, 2014 — The largest telescope on Earth is currently the Gran Telescopio Canarias in the Canary Islands of Spain, which was built in 2009 with an aperture of 10.4 m. This 10-m design will hold the record for another four to eight years, but a new crop of...
Algae Carbon Flow Controlled by Changing Light Colors
LEIPZIG, Germany, Oct. 28, 2014 — Blue and red light-sensing photoreceptors can be used to control the carbon flow in diatoms, a major group of algae that generates about one-fourth of the Earth’s oxygen and perform around a quarter of global CO2 assimilation. Researchers from...
Imaging Digs Deep to Improve Crops
ATLANTA and STATE COLLEGE, Pa., Oct. 10, 2014 — Boosting the output of important food crops such as rice and maize to meet the needs of the world’s growing population requires improvements both above and below the soil. A new imaging technique could aid these efforts. Developed by a team at...
Photons Act Like Liquid, Crystal in Experiment
PRINCETON, N.J., Sept. 10, 2014 — A system for "crystallizing" photons could help answer fundamental questions about quantum physics.
Imaging Shows Bubbles Could Make Energy-Efficient Nanoparticles
PRINCETON, N.J., Aug. 20, 2014 — High-speed cameras and UV-sensitive materials are helping advance understanding of bubbles — which could mean big things for nanoparticles. In fact, a system in which bubbles mix liquids is an energy-efficient route toward producing...
Atwater and Polman Receive the Julius Springer Prize
BERLIN, Aug. 8, 2014 — Harry Atwater and Albert Polman received the annual Julius Springer Prize for Applied Physics; they were honored for their achievements in plasmonics and nanophotonics. Atwater and Polman have pioneered the use of metallic nanostructures that...
NASA Engineer to Complete First
3-D-Printed Space Camera
GREENBELT, Md., Aug. 7, 2014 — New imaging instruments made using 3-D printing could bring the benefits of such technology to the forefront. NASA aerospace engineer Jason Budinoff is developing a 350-mm dual-channel imaging telescope and a 50-mm camera whose outer tube, baffles...
Technique Could Simplify Photonic Crystal Formation
PRINCETON, N.J., and NEW YORK, July 25, 2014 — A new method could allow scientists to custom-grow defect-free photonic crystals. A team from Princeton University and Columbia University created computer models demonstrating the technique, adding precisely sized chains of polymers to a colloidal...
Image Processing Method Offers Enhanced Underwater Views
THE HAGUE, Netherlands, July 24, 2014 — New image-enhancing software for cameras allows scientists to more easily observe life under water. A team from the Netherlands Organization for Applied Scientific Research and the Royal Netherlands Navy used the Nvidia Corp.’s CUDA (Compute...
Solar Energy Researcher wins $10,000 Award
EDISON, N.J., July 18, 2014 — Theresa McCormick has been awarded the Spring 2014 Equipment Grant Competition, along with $10,000 from Horiba Scientific (formerly Photon Technology International). McCormick is a professor at Portland State University where her research is focused...
Sensor Amplifies Molecule Signatures
HOUSTON, July 17, 2014 — A new sensing technique can accurately identify the structure and composition of individual molecules. Researchers from the Rice University Laboratory for Nanophotonics (LANP) developed the device, which they said has the ability to amplify single...
Novel Photodetector Made from Zinc Nanostructure
BEIJING, July 7, 2014 — A nanoporous structure is laying the groundwork for a new type of photodetector. A team from the State Key Laboratory of Petroleum Resources and Prospecting at the China University of Petroleum has developed the new photodetector, made for...
Molecular Movies Enhance Bioimaging, Health Research
CORVALLIS, Ore., and EDMONTON, Alberta, Canada, July 2, 2014 — While they won’t be hitting the red carpet anytime soon, bioimaging and health research are becoming molecular movie stars. A team from Oregon State University and the University of Alberta has created a biosensor imaging system that allows...
Photocatalytic Approach Produces New Drug Candidates
PRINCETON, N.J., June 25, 2014 — Light and nickel share a unique bond as chemical catalysts for potential new drugs. Princeton University chemists studying photoredox catalysis and nickel catalysis have discovered that bringing the two processes together enables reactions that...
Polariton Waveguide Could Help Photonic Circuits
TOYOHASHI, Japan, 25 June 2014 — A low-loss thin-film waveguide for surface plasmon polaritons (SPPs) could aid the development of nanoscale photonic integrated circuits on silicon. Recent research has focused on using SPPs as signal carriers in nanoscale integrated circuits to...
Funding Extended for Bio-inspired Solar Energy Research
ST. LOUIS, June 24, 2014 — The Photosynthetic Antenna Research Center (PARC) at Washington University has won a four-year, $14.4 million grant from the U.S. Department of Energy to continue research on natural and bio-inspired systems for harvesting the sun’s energy....
Career Award Funds CO2 Photocatalysis Study
HOUSTON, Texas, June 20, 2014 — Rice University professor Isabell Thomann has received a $400,000 Career Award from the National Science Foundation to study photocatalytic reactions that could reduce carbon dioxide emitted by power plants. Her five-year research project involves...
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May 2024
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