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Powerful X-ray beams unlock secrets of nanoscale crystal formation

Technique allowed continuous study of cobalt nanoparticles as they grew

09-Jan-2019

High-energy X-ray beams and a clever experimental setup allowed researchers to watch a high-pressure, high-temperature chemical reaction to determine for the first time what controls formation of two different nanoscale crystalline structures in the metal cobalt. The technique allowed continuous ...

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Solving a 75-year-old mystery might provide a new source of farm fertilizer

29-Nov-2018

The solution to a 75-year-old materials mystery might one day allow farmers in developing nations to produce their own fertilizer on demand, using sunlight and nitrogen from the air. Thanks to a specialized X-ray source at Lawrence Berkeley National Laboratory, researchers at the Georgia ...

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Boron nitride separation process could facilitate higher efficiency solar cells

04-Sep-2018

A team of semiconductor researchers based in France has used a boron nitride separation layer to grow indium gallium nitride (InGaN) solar cells that were then lifted off their original sapphire substrate and placed onto a glass substrate. By combining the InGaN cells with photovoltaic (PV) cells ...

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Spooky quantum particle pairs fly like weird curveballs

07-Jun-2018

Curvy baseball pitches have surprising things in common with quantum particles described in a new physics study, though the latter fly much more weirdly. In fact, ultracold paired particles called fermions must behave even weirder than physicists previously thought, according to theoretical ...

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Pores with a Memory

Porous polymer films with shape memory

08-Feb-2018

Whether for separation processes, photovoltaics, catalysis, or electronics, porous polymer membranes are needed in many fields. Membranes with micropores that switch between different shapes and/or sizes would expand the possibilities. Scientists have introduced a process that produces porous ...

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Nanostructure boosts stability of organic thin-film transistors

16-Jan-2018

A nanostructured gate dielectric may have addressed the most significant obstacle to expanding the use of organic semiconductors for thin-film transistors. The structure, composed of a fluoropolymer layer followed by a nanolaminate made from two metal oxide materials, serves as gate dielectric ...

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Are 20 percent of materials chemistry papers wrong?

18-Dec-2017

Can companies rely on the results of one or two scientific studies to design a new industrial process or launch a new product? In at least one area of materials chemistry, the answer may be yes -- but only 80 percent of the time. The replicability of results from scientific studies has become a ...

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Paper-based supercapacitor uses metal nanoparticles to boost energy density

09-Oct-2017

Using a simple layer-by-layer coating technique, researchers from the U.S. and Korea have developed a paper-based flexible supercapacitor that could be used to help power wearable devices. The device uses metallic nanoparticles to coat cellulose fibers in the paper, creating supercapacitor ...

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Meniscus-assisted technique produces high efficiency perovskite PV films

10-Jul-2017

A new low-temperature solution printing technique allows fabrication of high-efficiency perovskite solar cells with large crystals intended to minimize current-robbing grain boundaries. The meniscus-assisted solution printing (MASP) technique boosts power conversion efficiencies to nearly 20 ...

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New 3-D printing method creates shape-shifting objects

18-Apr-2017

A team of researchers from Georgia Institute of Technology and two other institutions has developed a new 3-D printing method to create objects that can permanently transform into a range of different shapes in response to heat. The team, which included researchers from the Singapore University ...

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