Gallium Nitride: A Semiconductor Almost as Durable as Diamonds
Lehigh University

Gallium Nitride: A Semiconductor Almost as Durable as Diamonds


From Lehigh University, November 2, 2016 by Kurt Pfitzer: "Four Lehigh engineers have reported a previously unknown property for GaN: Its wear resistance approaches that of diamonds and promises to open up applications in touch screens, space vehicles and radio-frequency microelectromechanical systems (RF MEMS), all of which require high-speed, high-vibration technology. Researchers performed dry sliding wear experiments on gallium nitride coatings grown epitaxially with MOCVD on single crystalline sapphire wafers. "


Source:
Lehigh University 
Image: Lehigh University


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Karslruher Institute of Technology, Germany

Bright Colors by Nanotechnology


From Karlsruhe Institute of Technology (Germany), October 19, 2016: "The very bright colors of the blue tarantula or peacock feathers do not result from pigments, but from nanostructures that cause the reflected light waves to overlap. This produces extraordinarily dynamic color effects. Scientists from Karlsruhe Institute of Technology (KIT), in cooperation with international colleagues, have now succeeded in replicating nanostructures that generate the same color irrespective of the viewing angle."


Source:Karlsruhe Institute of Technology
Image: University of Akron/Bill Hsiung


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University of Southampton, UK

New Collaboration to Lead Exploration of Novel GLS Thin Film Coatings


From the University of Southampton (UK), October 13, 2016: "The University of Southampton's Optoelectronics Research Centre (ORC) and Plasma App Ltd have announced that they are collaborating in a one-year £150k (US $184K) feasibility study exploring novel thin film coating technology and applications."


Source: University of Southampton 
Image: University of Southampton


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Lawrence Berkeley National Laboratory

Solar Cells Get Boost with Integration of Water-Splitting Catalyst onto Semiconductor


From Lawrence Berkeley National Laboratory, November 9, 2016 by Sarah Yang: "Scientists at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have found a way to engineer the atomic-scale chemical properties of a water-splitting catalyst", cobalt dihydroxide and cobalt oxide for a robust protective layer on a silicon dioxide coated silicon solar cell. The result is a big boost to the stability and efficiency of artificial photosynthesis."


Source: Lawrence Berkeley National Laboratory
Image: Lawrence Berkeley National Laboratory/Ian Sharp


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Fraunhofer ISE

30.2 Percent Efficiency --- New Record for Silicon-based Multi-junction Solar Cell


From Fraunhofer ISE, November 9, 2016: "Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with the Austrian company EV Group (EVG) have successfully manufactured a silicon-based multi-junction solar cell with two contacts and an efficiency exceeding the theoretical limit of silicon solar cells. The researchers used a "direct wafer bonding" process to transfer a few micrometers of III-V semiconductor material to silicon, a well-known process in the microelectronics industry. After plasma activation, the subcell surfaces are bonded together in vacuum by applying pressure. The atoms on the surface of the III-V subcell form bonds with the silicon atoms, creating a monolithic device. The complexity of its inner structure is not evident from its outer appearance: the cell has a simple front and rear contact just as a conventional silicon solar cell and therefore can be integrated into photovoltaic modules in the same manner."


Source: Fraunhofer ISE
Image: Fraunhofer ISE/A. Wekkeli


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National Institute for Material Science

Researchers Create 3-D Full-color Holographic Images with Nanomaterials


From Missouri University of Science and Technology, October 12, 2016 by Joe McCune: "Researchers at Missouri University of Science and Technology are creating a new approach to reconstruct 3-D full-color holographic images by using just one layer of nanoscale metallic film. This work has a huge potential to change our daily lives by equipping our cell phones with 3-D floating displays and printing 3-D security marking onto credit cards. They illustrate their approach by reproducing several full-color holographic images with nanometer-scale aluminum thin films."


Source: Missouri University of Science and Technology
Image: Missouri University of Science and Technology


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Deutsches Elektronen-Synchrotron

Novel Semiconductor Nanocomposite Material that Moves in Response to Light


From Worcester Polytechnic Institute, October 17, 2016: "A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used in a variety of applications. Researchers observed that the atomic orbitals of the molybdenum and sulfur atoms in molybdenum disulfide are arranged in a unique way that permits excitons within the conduction band to interact with what are known as the p-orbitals of the sulfur atoms. When the negatively-charged electrons move between orbitals, they leave behind positively charged voids known as holes. A pair of a bound electron and an electron hole is called an exciton. This "exciton resonance" contributes to the strong sigma bonds that give the two dimensional array of atoms in molybdenum sulfide its extraordinary strength. The strength of this resonance is also responsible for a unique effect that can generate heat within the material. It is the heat that gives rise to the material's chromatic (light-induced) mechanical response."


Source: Worcester Polytechnic Institute
Image: Worcester Polytechnic Institute


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University of Wisconsin - Madison

Engineers Reveal Fabrication Process for Revolutionary Transparent Sensors


From University of Wisconsin-Madison, October 13, 2016, by Renee Meiller: "In 2014, when University of Wisconsin-Madison engineers announced in the journal Nature Communications that they had developed transparent graphene sensors for use in imaging the brain, researchers around the world took notice. "So many research groups started asking us for these devices that we couldn't keep up," says Zhenqiang (Jack) Ma, professor in electrical and computer engineering at UW-Madison. "


Source: University of Wisconsin-Madison
Image: University of Wisconsin-Madison/Justin Williams Research Group


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Max Planck Institute for Intelligent Systems

The Nanostructured Cloak of Invisibility


From Max Planck Institute for Intelligent Systems (Germany), October 21, 2016: "Most lenses, objectives, eyeglass lenses, and lasers come with an anti-reflective coating. Unfortunately, this coating works optimally only within a narrow wavelength range. Scientists at the Max Planck Institute for Intelligent Systems in Stuttgart have now introduced an alternative technology. Instead of coating a surface, they manipulate the surface itself. By comparison with conventional procedures, this provides the desired anti-reflective effect across a wider wavelength range. But more than this, it largely increases the light transmittance through surfaces. In the future, the nanostructured surfaces may improve high-energy lasers as well as touchscreens and the output of solar modules. "


Source: Max Planck Institute for Intelligent Systems
Image: Max Planck Institute for Intelligent Systems/Zhaolu Diao


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Chalmers University of Technology

Bendable Electronic Paper Displays Whole Color Range


From Chalmers University of Technology (UK), October 14, 2016: "Less than a micrometer thin, bendable and giving all the colors that a regular LED display does, it still needs ten times less energy than a Kindle tablet. Researchers at Chalmers University of Technology have developed the basis for a new electronic "paper".


The 'paper' is similar to the Kindle tablet. It isn't lit up like a standard display, but rather reflects the external light which illuminates it. Therefore it works very well where there is bright light, such as out in the sun, in contrast to standard LED displays that work best in darkness. "


Source: Chalmers University of Technology
Image: Chalmers University of Technology


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University of California Berkeley

Major Advance in Solar Cells Made from Cheap, Easy-to-Use Perovskite


From University of California, Berkeley, November 7, 2016, by Robert Sanders: “Solar cells made from an inexpensive and increasingly popular material called perovskite can more efficiently turn sunlight into electricity using a new technique to sandwich two types of perovskite into a single photovoltaic cell. University of California, Berkeley, and Lawrence Berkeley National Laboratory scientists report a new design that already achieves an average steady-state efficiency of 18.4%, with a high of 21.7% and a peak efficiency of 26%."


Source: University of California, Berkeley
Image: University of California, Berkeley/Onur Ergen


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SVC_2017_Membership_200x300 


R&D Magazine

UV Light Improves Smartphone Cameras


From R&D Magazine, October 24, 2016, by Moscow Institute of Physics and Technology: "Photodetectors, which are used in a wide range of systems and devices from smartphones to space stations, are typically only sensitive to light within a certain narrow bandwidth. This presents numerous challenges to product developers. Together with their colleagues from China and Saudi Arabia, scientists at the Moscow Institute of Physics and Technology (MIPT) have found a way to address this.


Source: R&D Magazine
Image: MIPT Press Office


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SVC Membership

SVC Membership Offers Many Benefits


Join or renew your membership for 2017 now and enjoy the benefits of membership for the entire calendar year. Members enjoy free access to the SVC Digital Library and special discounts for many SVC products and services.


Learn More   >

TechCon Tutorial Course Offerings

Choose from TechCon Tutorial Course Offerings for Every Skill Level


The TechCon Tutorial Program increases attendees' practical knowledge of vacuum coatings and processes. Return to work with solutions to everyday vacuum coating troubles and breathe new life into your technical career.


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NCCAVS 38th Annual Equipment Exhibition

NCCAVS 38th Annual Equipment Exhibition


February 23, 2017
Holiday Inn San Jose Airport
1350 N. First Street
San Jose, Calif.


Held In conjunction with:


  • 6th Annual Student Poster Session 
  • NCCAVS Symposium/Joint User Group Meeting


For Attendee Registration, click here. For Exhibitor Registration, click here.

NCCAVS 38th Annual Equipment Exhibition

FCSE 2017 8th Symposium on Functional Coatings and Surface Engineering



June 4-7, 2017
University of Montreal
Quebec, Canada

Abstract Submission Deadline: February 17, 2017

 

Organized by: Quebec Consortium of Advanced Materials - RQMP, and St. Lawrence Chapter of the AVS Science and Technology of Materials, Interfaces; in collaboration with the Society of Vacuum Coaters, and hosted by Polytechnique Montréal and Université de Montréal.

 

Program and Schedule:

Full-Day Short Courses: June 4, 2017, Polytechnique Montreal - Main Building
Materials Science - with J.E. Greene
Plasma Processing of Materials - with A. Anders

 

Symposium Technical Program: June 5 - June 6, 2017, Pavillon Jean-Coutu
Invited lectures and contributed oral presentations, poster presentations, best poster awards, table-top exhibit by manufacturers and vendors, research facility visit, symposium reception and social networking.

 

Full-Day Hands-on Workshops: June 7, 2017:

  • Mechanical Properties of Films and Coatings 
  • Optical Characterization and Reverse Engineering - Spectroscopic Ellipsometry
  • Tribological Properties of Surface Engineered Materials


Click here for more information and to submit an abstract. 

 


SVConnections Contributing Editors:
Carl M. Lampert, SVC Technical Director
Joyce Lampert


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