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Materials, Coatings News
Process Minimizes Contact Reflectance in Solar Cells
STANFORD, Calif., Nov. 30, 2015 — Electrical contacts take up 5 to 10 percent of the surface of conventional solar cells, reflecting sunlight and hampering power generation. A simple chemical reaction can cause those contacts to recede while exposing more of a cell's energy-harvesting semiconductor material to the light. The method could boost the efficiency of conventional silicon solar cells from 20 percent to 22 percent, according to researchers at Stanford University. "Using nanotechnology, we have developed a
Superacid Erases Thin Film Defects, Boosting Luminescence
BERKELEY, Calif., Nov. 26, 2015 — An organic superacid can smooth out defects in monolayer semiconductors, potentially making them more viable for applications such as transparent LED displays, ultrahigh-efficiency solar cells and photodetectors. The chemical treatment method...
Kirigami Helps Solar Cells Track the Sun
ANN ARBOR, Mich., Nov. 18, 2015 — Kirigami, the ancient Japanese art of paper cutting, could help create flexible solar cells that track the sun to generate more electricity than stationary panels. With help from an art professor, researchers at the University of Michigan recently...
Laser Method Would Heat Fusion Materials Faster
LONDON, Nov. 16, 2016 — Directly targeting ions with lasers could heat certain materials to 1 KeV — equivalent to more than 10 million °F — in 20 fs, or 100 times faster than previously demonstrated. The method, proposed by researchers from Imperial College...
3D Printing Firm Prodways Acquires Exceltec for Polymer Laser Sintering Materials
LES MUREAUX, France, Nov. 16, 2015 — Prodways, a subsidiary of Groupe Gorgé, has acquired Exceltec SARL of Lyon, a company specializing in the development and distribution of polymer materials for industrial 3D printing using selective laser sintering. Exceltec develops...
Lightwave Logic Testing Organic Waveguides
LONGMONT, Colo., Nov. 16, 2015 — Lightwave Logic Inc. is banking on the potential of organic polymers to compete with metallic semiconductors in optoelectronics applications. The company recently began passive testing of ridge waveguide modulators fabricated using its proprietary...
Sir Richard Friend Awarded for Plastic Electronics Contributions
WARRENDALE, Pa., Nov. 12, 2015 — Sir Richard H. Friend is the recipient of the 2015 Von Hippel Award for his pioneering research on polymeric semiconducting materials, which has helped drive advances in LED and solar cell technology. In the 1980s, Friend initiated a research...
Plasmonic Absorbers Capture Specific Wavelengths
DURHAM, N.C., Nov. 11, 2015 — An experimental fabrication technique has created perfect absorbers for small bands of the electromagnetic spectrum from visible light through the near-infrared. The technique could allow advanced thermal imaging systems to be produced more quickly...
Lotus Leaf-Based Metamaterial Capable of Near-Total Light Absorption
TOKYO, Nov. 5, 2015 — An experimental biometamaterial fabricated using a lotus leaf as a template is capable of almost total absorption of light across the entire visible spectrum. Researchers from the Tokyo and Shibaura institutes of technology in Japan hypothesized...
Changing Frequency Speeds Phosphor Light Emission
PROVIDENCE, R.I., Nov. 4, 2015 — A technique for controlling light from phosphors at very high speeds could overcome the materials' slow optical performance, potentially enabling their use in optical communications. Phosphors are common light emitters used in light bulbs, LEDs and...
Resonetics Expands Materials Processing Capabilities with Acquisition of Mound Laser
NASHUA, N.H., Nov. 4, 2015 — Resonetics LLC has acquired Mound Laser and Photonics Center Inc., a manufacturer of microscale metal components for the medical device and defense industries, for an undisclosed sum. Mound Laser is based in Kettering, Ohio. Resonetics will expand...
Flexbright Partners with NNCRM for LED Project
KANGASALA, Finland, Oct. 16, 2015 — LED lighting manufacturer Flexbright Oy has partnered with the Nanotechnologies and Nanomaterials Centre of the Republic of Mordovia (NNCRM) to develop LED foils. The foils can be coupled with sensors and controlled wirelessly. They are suited for...
Metamaterial Offers Simpler Route to Slow Light
TUSCALOOSA, Ala., Oct. 15, 2015 — Manipulating the speed of light more effectively than cold-atom methods, a metamaterial design could find use in optical networks and sensors. The "slow light" effect was demonstrated using terahertz waves, but could be applied to other wavelengths...
Food Waste Transformed into LEDs
SALT LAKE CITY, Oct. 14, 2015 — LEDs made from sugary drinks could reduce waste and replace other light sources made with toxic elements. University of Utah researchers have developed a process for turning food, beverages and even combustion exhaust into light-emitting quantum...
Nano-Engineered Film Has Refractive Index Near 1
RALEIGH, N.C., Oct. 12, 2015 — A dielectric film with a refractive index close to that of air could be used to make photonic devices more efficient and mechanically stable. Photonic devices require high contrast between their component materials, with some components having high...
Fiber Sensors Improve Robot Touch Sensitivity
PITTSBURGH, Sept. 29, 2015 — Fiber optic sensors could give robots the sensitivity needed to handle delicate objects and work safely alongside humans. A newly developed three-fingered soft robotic hand features 14 embedded fiber optic strain sensors that give it the ability to...
Optical Memory Chip Uses Phase-Change Material
KARLSRUHE, Germany, Sept. 23, 2015 — The first demonstration of a stable nanoscale optical memory chip could allow storage and retrieval of data without the latency inherent in electronic systems. The prototype, developed by researchers in Germany and England, incorporates phase-change...
Laser Ablation Boosts GaAs Terahertz Emission
OKINAWA, Japan, Sept. 18, 2015 — While there is still no cheap and efficient way to mass produce terahertz emitters, laser ablation can increase the output of GaAs, a common semiconductor used in these devices. The surface microstructure of GaAs thin films plays an important role...
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...
Zecotek Adds Robotics to Scintillator Crystal Production
SINGAPORE, Sept. 14, 2015 — A new manufacturing process that uses robots to assemble lutetium fine silicate (LFS) crystal arrays has been developed by Zecotek Photonics Inc., positioning the company and its partners for photodetector device expansion. "By introducing robotic...
'Nanosprings' Show Promise for Self-Powered Devices
ANKARA, Turkey, Sept. 11, 2015 — Self-powered nanosystems like environmental and structural integrity sensors could be enabled by coiled semiconductor nanowires that absorb light. Computational simulations by researchers at Bilkent University show that twisting straight nanowires...
Color-Changing Substance Detects Biological, Mechanical Problems
CAMBRIDGE, Mass., Sept. 9, 2015 — Responsive to a range of stimuli, a color-changing metallic substance could help detect problems as varied as mechanical strain and pollution. The material can be engineered to emit specific colors — even pure white — under different...
Common Materials Could Simplify White LED Manufacturing
PISCATAWAY, N.J., Aug. 19, 2015 — Computational models identify combinations of materials that could help reduce the costs of manufacturing white LEDs. Experiments by Rutgers University researchers suggest materials and processes for phosphor-converted white LEDs (PC-WLEDs) that...
Quantum Materials Partners With Display Manufacturer
SAN MARCOS, Texas, Aug. 3, 2015 — Quantum Materials Corp. has announced a joint development agreement with an unnamed, leading display panel manufacturer. The companies will be developing next-generation quantum dot-based display technologies. Research and development teams will be...
Intevac Receives Deposition System Order from Display Manufacturer
SANTA CLARA, Calif., July 22, 2015 — Intevac Inc. says a new Tier-1 display customer has ordered a VERTEX physical vapor deposition (PVD) system, used to provide enhanced scratch protection on mobile device displays, camera lenses and glass covers. Scheduled to ship in the fourth...
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