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Innovation Management and the Emergence of the Nanobiotechnology Industry

Nanotech-Now - July 3, 2014 - 7:45am
The confluence of nanotechnology and biotechnology is creating opportunities and an emerging industry, nanobiotechnology, with tremendous potential for economic and social value creation. The medical...
Categories: Nanotechnology News

Harris & Harris Group Portfolio Company HZO Raises $20 Million in Growth Financing

Nanotech-Now - July 3, 2014 - 7:45am
Harris & Harris Group, Inc. (Nasdaq:TINY), an investor in transformative companies enabled by disruptive science, today announced that it has invested $2 million in portfolio company HZO, Inc.'s , $20...
Categories: Nanotechnology News

Albany NanoCollege Faculty Member Selected as Editor-in-Chief of the Prestigious Journal of Electronic Materials

Nanotech-Now - July 3, 2014 - 7:45am
Newly merged CNSE/SUNYIT Associate Professor of Nanoengineering Dr. F. (Shadi) Shahedipour-Sandvik to leverage cutting-edge experience at the NanoCollege and manage internationally recognized journal.
Categories: Nanotechnology News

Up in Flames: Evidence Confirms Combustion Theory: Berkeley Lab and University of Hawaii research outlines the story of soot, with implications for cleaner-burning fuels

Nanotech-Now - July 3, 2014 - 7:45am
Researchers at the Department of Energy's Lawrence Berkeley National Lab (Berkeley Lab) and the University of Hawaii have uncovered the first step in the process that transforms gas-phase molecules in...
Categories: Nanotechnology News

New Study Raises Possibility of Production of P-Type Solar Cells

Nanotech-Now - July 3, 2014 - 7:45am
Iranian researchers from Shahid Beheshti University produced nanoparticles in homogenous particle sizes to make possible the production of p-type pigment solar cells.
Categories: Nanotechnology News

Improved Method of Device Area Scale-up for SWNT/Silicon Hybrid Solar Cells Using Silver Nanowires

National Nanomanufacturing Network - July 2, 2014 - 5:57am
While research on silicon solar cells has progressed the development of all organic, inorganic, and hybrid materials systems to simultaneously address the diverse set of design criteria for optimal photovoltaic (PV) performance, incorporation of hybrid materials systems has proven to be an effective method to improve some of these issues. With crystalline silicon representing the standard for high efficiency in solar cell designs, cell cost and production capacity remain concerns for the growing emphasis on broad implementation of renewable energy strategies on a global basis, with solar PV being a leading competitor. With recent studies demonstrating that the approach incorporating p-type nano-Carbon with n-type silicon in a hybrid film approach provides excellent diode junction rectification properties, improved collection and transport efficiencies due to the enhanced conductivity of the nano-C film, and superior semiconductor barrier properties at the nano-C/silicon junction. While this has proven effective for small cell design of a few square millimeters, scaling the cell area has proven challenging due to the increase in sheet resistance (Rs) of the nano-C layer as area increases resulting in a reduction in cell efficiency. Recently, Li, et.al, from the Taylor group in the Chemical and Environmental Engineering Department at Yale University, reported on a approach to significantly improve the performance for scaling up cell area for hybrid single walled carbon nanotubes (SWNT)/Silicon solar cells. In this work, the authors utilized p-type SWNTs cast onto n-type silicon as a dense film approximately 15 nm in thickness. For small cell areas on the order of 1-2 mm2, cell performance was significantly improved in comparison to other hybrid approaches due to the low Rs of the SWNT film. For larger cell areas, the Rs increased substantially to kilo-ohm/square, resulting in decreased cell efficiency. While increasing the SWNT film thickness could potentially lower Rs, the trade-off would be a reduction in optical transparency for the film, which would still reduce cell efficiency during scale-up. Patterning of metal conductor traces over the SWNT film was considered as a means to reduce Rs, but the evaporation of metal over the SWNT film resulted in cell shorting as some of the metal penetrated the pores in the film to the silicon junction. Instead, a strategy of casting silver nanowires (AgNWs) from solution at medium densities was investigated as a means to lower Rs while maintaining reasonable optical transparency during cell area scale-up. Reported results showed that casting of the AgNW films over the SWNT film reduced Rs for the scaled cell structures, and that even with the slight increase in optical absorption with the additive bilayer film, the overall performance of the scaled cells was significantly improved in comparison to the SWNT/Silicon hybrid cell design. The cells exhibited improved fill-factors which were most predominant in enhancing the efficiency, even with slight reductions in open circuit voltage and short circuit current observed for the scaled cell areas. To further improve the optical absorption for the cell, the authors cast titania (TiO2) nanoparticles over the AgNW/SWNT surfaces to reduce reflection and increase forward scattering of incident solar radiation, resulting in a marginal improvement which was further increased via post process steps. This work has developed a solution-based approach to mitigate the total resistive power loss that typically hinders the area scale-up of hybrid nano-C/Si solar cells. A nearly twofold increase of photovoltaic efficiency is observed upon the coating of AgNWs onto SWNT/Si junctions, resulting from the significant reduction in the Rs enabled by the AgNW/SWNT bilayer. The SWNT thin film with high optical transparency and extremely small thickness also allows for the direct solution deposition of antireflective TiO2 nanoparticles. A final efficiency of >10% was realized in 49 mm2 cells, with implications for complete solution processed solar cell manufacturing and ultimately cell cost reduction. The work further illustrates the role and versatility that additive nanostructured films can contribute to performance improvements for cell area scale-up. References: Device Area Scale-Up and Improvement of SWNT/Si Solar Cells Using Silver Nanowires (http://onlinelibrary.wiley.com/doi/10.1002/aenm.201400186/pdf). Xiaokai Li, Yeonwoong Jung, Jin-Shun Huang, Tenghooi Goh, and André D. Taylor; Advanced Energy Materials 2014. DOI: 10.1002/aenm.201400186 (http://dx.doi.org/10.1002/aenm.201400186) Images reprinted with permission from John Wiley and Sons; Advanced Energy Materials; Device Area Scale-Up and Improvement of SWNT/Si Solar Cells Using Silver Nanowires; © 2014 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim; Xiaokai Li,Yeonwoong Jung,Jing-Shun Huang,Tenghooi Goh,André D. Taylor.

MoS2's dielectric constant is not constant

Nanotechweb - July 2, 2014 - 5:24am
Finding will be important for when it comes to designing molybdenum disulphide-based devices in the future
Categories: Nanotechnology News

FDA issues guidance on use of nanotechnology in foods

Nanotech-Now - July 1, 2014 - 11:56am
The FDA recently issued a final guidance titled, "Guidance for Industry: Assessing the Effects of Significant Manufacturing Process Changes, Including Emerging Technologies, on the Safety and Regulato...
Categories: Nanotechnology News

Iranian, Norwegian Scientists Produce Nanopaper from Bagasse

Nanotech-Now - July 1, 2014 - 7:45am
Iranian researchers from Gorgan University of Agricultural Sciences and Natural Resources in association with their Norwegian colleagues succeeded in the production of a nanopaper with resistive and t...
Categories: Nanotechnology News

Noninvasive brain control: New light-sensitive protein enables simpler, more powerful optogenetics

Nanotech-Now - July 1, 2014 - 7:45am
Optogenetics, a technology that allows scientists to control brain activity by shining light on neurons, relies on light-sensitive proteins that can suppress or stimulate electrical signals within cel...
Categories: Nanotechnology News

Researchers create quantum dots with single-atom precision

Nanotech-Now - July 1, 2014 - 7:45am
A team of physicists from the Paul-Drude-Institut für Festkörperelektronik (PDI) in Berlin, Germany, NTT Basic Research Laboratories in Atsugi, Japan, and the U.S. Naval Research Laboratory (NRL) has...
Categories: Nanotechnology News

Scientists Develop Force Sensor from Carbon Nanotubes

Nanotech-Now - July 1, 2014 - 7:45am
A group of researchers from Russia, Belarus and Spain, including MIPT professor Yury Lozovik, have developed a microscopic force sensor based on carbon nanotubes. The device is described in an article...
Categories: Nanotechnology News

Nano-coatings release almost no nano-particles: Silver in the washing machine

Nanotech-Now - July 1, 2014 - 7:45am
The antibacterial properties of silver-coated textiles are popular in the fields of sport and medicine. A team at Empa has now investigated how different silver coatings behave in the washing machine,...
Categories: Nanotechnology News

Interlayer distance in graphite oxide gradually changes when water is added

Nanotech-Now - July 1, 2014 - 7:45am
Physicists from Umeå University and Humboldt University in Berlin have solved a mystery that has puzzled scientists for half a century. They show with the help of powerful microscopes that the distanc...
Categories: Nanotechnology News

Newly Merged SUNY CNSE/SUNYIT to Share Insights into Next-Generation Semiconductor Technology Development During SEMICON West 2014 Conference

Nanotech-Now - July 1, 2014 - 7:45am
SUNY NanoCollege and corporate partners provide updates on New York State's Global 450mm Consortium, among other presentations highlighting the state's high-tech industry.
Categories: Nanotechnology News

A smashing new look at nanoribbons: Rice University lab unzips nanotubes into ribbons by shooting them at a target

Nanotech-Now - July 1, 2014 - 7:45am
Carbon nanotubes "unzipped" into graphene nanoribbons by a chemical process invented at Rice University are finding use in all kinds of projects, but Rice scientists have now found a chemical-free way...
Categories: Nanotechnology News

New insights into energy generation by heat shock protein Hsp90: Cellular team players

Nanotech-Now - July 1, 2014 - 7:45am
Many enzymes work only with a co-trainer, of sorts. Scientists at the Technische Universitaet Muenchen (TUM) and the Cluster of Excellence Nanosystems Initiative Munich (NIM) show what this kind of co...
Categories: Nanotechnology News

Artificial enzyme mimics the natural detoxification mechanism in liver cells: Molybdenum oxide particles can assume the function of the endogenous enzyme sulfite oxidase / Basis for new therapeutic application

Nanotech-Now - July 1, 2014 - 7:45am
Scientists at Johannes Gutenberg University Mainz (JGU) in Germany have discovered that molybdenum trioxide nanoparticles oxidize sulfite to sulfate in liver cells in analogy to the enzyme sulfite oxi...
Categories: Nanotechnology News

Researchers Develop Novel Way to Waterproof Materials by Adding Exterior Surface Grooves

National Nanomanufacturing Network - July 1, 2014 - 4:20am
Researchers from Kyoto University in Japan have developed a novel way to waterproof new functionalized materials involved in gas storage and separation by adding exterior surface grooves. Their study, published in the journal Angewandte Chemie, provides a blueprint for researchers to build similar materials involved in industrial applications, such as high performance gas separation and energy storage.