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Illuminating the electronic properties of graphene

Researchers have shown that both the carrier mobility and the carrier density of graphene can be measured in a spatially resolved and non-destructive way - providing 'maps' of the electronic properties critical for the successful use of graphene in photovoltaics, electronics, spintronics and optics - using terahertz radiation and doing away with the need to fabricate devices.

Posted: Jul 24th, 2015

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Graphene - from science fundamentals to low-cost production

Keynote presentations on the third day of Graphene Week 2015 offered an eclectic mix of fundamental science and practical chemical engineering. Here we report briefly on each of the talks, beginning with an introduction to optoelectronics in 2D semiconductors and heterostructures, and concluding with an outline of a highly promising 'kitchen sink' approach to graphene production.

Posted: Jul 24th, 2015

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Nanocages offer new direction in sustainable catalyst design

Engineers have developed a new approach to structuring the catalysts used in essential reactions in the chemical and energy fields. The advance offers a pathway for industries to wean themselves off of platinum, one of the scarcest metals in the earth's crust.

Posted: Jul 23rd, 2015

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Artificial moth eyes enhance the performance of silicon solar cells

Mimicking the texture found on the highly antireflective surfaces of the compound eyes of moths, researchers use block copolymer self assembly to produce precise and tunable nanotextured designs in the range of about 20 nm across macroscopic silicon solar cells. This nanoscale texturing imparts broadband antireflection properties and significantly enhances performance compared with typical antireflection coatings.

Posted: Jul 23rd, 2015

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Qubit chemistry

Scientists show how two qubit types - atomic spins and quantum dot spins - can be combined into a workable quantum system.

Posted: Jul 22nd, 2015

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Nanocomposite window materials can control light and energy

Researchers are one step closer to delivering smart windows with a new level of energy efficiency, engineering materials that allow windows to reveal light without transferring heat and, conversely, to block light while allowing heat transmission.

Posted: Jul 22nd, 2015

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New molecular butterflies help advance energy research

Imagine a family of butterflies fluttering around in a controlled lab space. Except, the butterflies aren't really butterflies. They are molecules designed and produced as new functional materials that have a wide range of applications from molecular sensors to light-controlling devices.

Posted: Jul 22nd, 2015

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Boosting gas mileage with graphene

Researchers report the development of a material that could convert engine heat that's otherwise wasted into electrical energy to help keep a car running - and reduce the need for fuels.

Posted: Jul 22nd, 2015

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