A research group at the University of Tokyo and Sharp Corp developed a quantum dot-type photovoltaic (PV) battery with a high efficiency. Its cell conversion efficiency is 18.7% without light condensing and 19.4% at the time of 2x light condensing.
By systematically advancing silicon-on-insulator (SOI) photonic integration technology, compact, cost-effective and power efficient components have been developed that enable photonic Tb/s capacity systems for current and new generation high-speed broadband core networks.
Imec presents a via-middle through-Si-via (TSV) approach to 3D stacking. This method is new to industry as it allows to 'reveal' TSV contacts by using a Si-etch process. The process further allows thinning down the wafers to 50um with a total thickness variation of less than 2um.
Just as a chameleon changes its color to blend in with its environment, Duke University engineers have demonstrated for the first time that they can alter the texture of plastics on demand, for example, switching back and forth between a rough surface and a smooth one.
The technique makes use of plasmonic excitation in nanocavities. In a demonstration, a rectangular nanocavity was used to detect the presence of 22nm beads. This approach may open new routes to create optical tweezers at the nanoscale, for ultra-accurate sensing, trapping, and arranging of nanoscale objects, such as biomolecules.
Imec has successfully fabricated crystalline silicon solar cells including 2D periodic photonic nanostructures made with nano-imprint lithography. The result was an improvement in energy-conversion efficiency, compared to unpatterned cells, through a better absorption of the light spectrum. The technique shows a path to further reducing the thickness of solar cells while keeping the efficiency as high as possible.
UCLA researchers from the Department of Chemistry and Biochemistry, the Department of Materials Science and Engineering, and the California NanoSystems Institute demonstrate high-performance graphene-based electrochemical capacitors that maintain excellent electrochemical attributes under high mechanical stress.
The Baskrete Initiative (Basque Country Initiative for Cement and Concrete Research), whose objective is to promote the implementation of nanotechnologies in the cement and concrete industry, organized a special seminar in San Sebastian on the 13 and 14 March where the sector's largest companies in the world, such as Cemex, Lafarge, Italcementi and the Bozzetto Group, attended.
Using the world's fastest light source -- specialized X-ray lasers -- scientists at the University of Colorado Boulder and the National Institute of Standards and Technology have revealed the secret inner life of magnets, a finding that could lead to faster and "smarter" computers.
Hydrogen fuel cells, like those found in some "green" vehicles, have a lot of promise as an alternative fuel source, but making them practical on a large scale requires them to be more efficient and cost effective. A research team from the University of Central Florida may have found a way around both hurdles.
Scientists have come up with a novel process for manufacturing transistors that combine flexibility and electron mobility and are capable of working at very high frequencies in the GHz range. The process uses a form of graphene in solution that is compatible with printing techniques. Electronic components such as these should lead to the development of high-performance electronic circuits built into everyday objects.
Ein soeben veroeffentlichtes Diskussionspapier "Nanomaterialien in REACh. Foerdert die Registrierung Innovationen fuer Nachhaltigkeit durch Nanomaterialien?" beantwortet die im Titel gestellte Frage durch eine rechtswissenschaftliche Untersuchung der REACh-Vorschriften und eine darauf aufbauende Analyse der Anreiz- und Hemmnissituation potentieller Registranten von Nanomaterialien.