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Materials, Coatings News
Nanowire Optical Properties Tuned by Alloy Catalyst
BERKELEY, Calif., March 9, 2015 — A new growth catalyst gives greater control over the colors of light emitted by gallium nitride nanowires. Rather than using a single metal, researchers at Lawrence Berkeley National Laboratory used gold-nickel alloys as a catalyst. By altering the concentrations in the alloy, the researchers could precisely manipulate the orientation of the nanowires, even on the same substrate in the same batch. Depending on the growth direction chosen, different optical properties were observed
Black Phosphorus Shows Promise in Optical Circuits
MINNEAPOLIS, March 5, 2015 — With a tunable bandgap, black phosphorus could be used to make better optical communications circuits than graphene and even germanium. Researchers at the University of Minnesota used black phosphorus, a 2-D, stable crystalline form of phosphorus,...
Semrock Names Life Sciences Catalog Leader
ROCHESTER, N.Y., Feb. 25, 2015 — Semrock has named Dr. Prashant Prabhat the new business line leader for its newly formed life sciences catalog business segment. Prabhat and his team will focus on growing the catalog filter business, which supports researchers in fluorescence...
Multilayer QD Solar Cells Promising for Natcore
RED BANK, N.J., Feb. 23, 2015 — A new breed of quantum dots (QDs) could enable multilayer solar cells that capture more of the sun’s energy. Natcore Technology Inc. said scientists in the laboratories of co-founder Dr. Andrew Barron, who is also a professor at Rice...
Asia-Pacific: Manufacturing the Future
Feb 13, 2015 — The world of laser-based 3-D printing is one of endless possibilities, so much so that trying to predict its advances seems pointless. Since its emergence in the 1980s, laser-based additive manufacturing has evolved into many forms, including...
LSCM and RelA for Quantifying Microwear: A Case Study
Feb 13, 2015 — Laser scanning confocal microscopy and relative area are effective tools for surface-roughness analysis of experimental Mistassini quartzite scrapers. Laser scanning confocal microscopy (LSCM) and relative area (RelA) are effective tools for the...
Nanoimprint Lithography Enables Cost-Effective Photonics Production
Feb 13, 2015 — The ability to create wafer-scale stitching-error-free patterns of nanostructures on bowed and warped surfaces and even on topography, as well as direct patterning of 3-D structures, makes nanoimprint lithography ideally suited for the needs of a...
Film Enables Touch Displays That Respond to Bending, Heat
WURZBURG, Germany, Feb. 6, 2015 — A novel film could be used to make flexible displays that respond not only to touch but also to bending. Developed by a team from the Fraunhofer Institute for Silicate Research (ISC), the film is based on piezoelectric printing pastes that render...
Quantum Materials Begins Shipping of Cadmium-Free QDs
SAN MARCOS, Texas, Feb. 5, 2015 — Quantum Materials Corp. has begun shipping cadmium-free red and green quantum dots in evaluation and production quantities to consumer electronics manufacturers. The company said a new facility, equipment and personnel have allowed it to increase...
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Laser Machine Tools Speed Sign Cutting
Jan 27, 2015 — Interior plastic signs are ubiquitous in hotels, office buildings, hospitals and other structures. These signs may seem like simple products, but they are actually often complex assemblies of numerous pieces. Like many other manufacturers, sign...
Ultrafast Lasers Enable Improvements in Microprocessing
Jan 27, 2015 — Ultrafast lasers provide an avenue into a number of new microprocessing applications because of their capability for athermal ablation and their extremely high peak power. Many materials and applications can be susceptible to adverse heating effects...
Ultrafast Lasers Signal Batman from Magnetic Hard Drive
VILLIGEN, Switzerland, Jan. 19, 2015 — Researchers may have unintentionally summoned Batman as they work to store larger amounts of data on smaller hard drives using lasers. An international team has demonstrated sub-100-ps magnetization reversal inside a hard drive using femtosecond...
Which Way From Here?
Jan 18, 2015 — Welcome to the annual Photonics Spectra trends issue. In years past, we have explored industry direction by looking at developments in specific technologies, and by delving into societal impacts on the photonics industry and its technologies. For...
Silicon Photonics: A Field that Is Constantly Changing
Jan 16, 2015 — In this active, exciting area of development, new devices, techniques and studies are presented at every turn. Electronics and photonics have been two worlds apart for many years: Electronics had an explosion that forever changed the way consumers...
Trends in Miniaturization
Jan 16, 2015 — Exploiting the unusual optical properties of very small objects, quantum-based technologies are starting to revolutionize lasers, solar cells, communications and more. Smaller is often better, as it frequently can reduce the size and weight of gear...
Trends in New Materials
Jan 16, 2015 — Scientists are developing an entirely new generation of ultrathin materials such as graphene and germanene, whose photonic properties promise a new frontier of components and devices. Graphene is a wonder material: a sheet of pure, stable carbon in...
Trends in Sustainability
Jan 16, 2015 — The global “green revolution” is pushing the boundaries of photonics as governments, companies and citizens work to preserve our world and its resources. From individual citizens and businesses right up to entire industries and...
Diamond Defects Enhance Single-Photon Emission
WEST LAFAYETTE, Ind., Jan. 14, 2015 — Nanodiamonds containing atomic-scale defects can enhance metamaterials’ emission of single photons — an important attribute of future quantum computers. A team at Purdue University, in cooperation with Russian researchers, coupled...
Nanolaser Detects Biomolecules
YOKOHAMA, Japan, Jan. 13, 2015 — A laser biosensor has demonstrated a simpler way to identify DNA and biomarker proteins via changes in a solution’s surface charge density or pH. A team from Yokohama National University developed the GaInAsP photonic crystal nanolaser...
Delta Spins Out Optical Thin Films Business
HØRSHOLM, Denmark, Dec. 23, 2014 — Delta Danish Electronics, Light & Acoustics has spun off its optical thin films business. Following a management buyout, Delta Optical Thin Film AS will be run by Business Manager Poul Svensgaard and Development Manager Henrik Fabricius. The new...
Evatec to Grow Deposition Business with Acquisition from Oerlikon
FLUMS, Switzerland, Dec. 23, 2014 — Evatec plans to acquire Oerlikon’s advanced technologies segment to expand its thin-film deposition systems business. Applications for the segment include power devices, read/write heads for hard disks, LEDs, microelectromechanical systems...
High-Speed Line-Scan Sensors Improve Spectroscopy
Dec 12, 2014 — CMOS linear arrays allow the optical signal to be digitized directly on the chip, making the electronics design simpler, more cost-efficient and more robust. CMOS image sensors were attractive initially because of their lower overall system costs,...
Nanotube-Based Solar Cells Make More of the Sun
Dec 12, 2014 — They’re cheaper, lighter, flexible and easy to dispose – it’s little wonder that carbon nanotubes are grabbing the attention of solar cell specialists in Europe and beyond. Since they were first discovered in 1991, carbon nanotubes...
Printed Optics Usher in New Era of Manufacturing
Dec 12, 2014 — Additive manufacturing techniques are set to revolutionize fabrication and integration of optical products for a variety of applications, from lighting to imaging and beyond. Additive manufacturing techniques are creating a new awakening in optics...
Screen Saver
Dec 12, 2014 — Let’s face it: We spend a large portion of our day looking at screens. The jury is still out on whether that’s an entirely good or bad thing, but it is the reality of modern life. Our ever-evolving arsenal comprises cellphones, tablets,...
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