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Light may unlock a new quantum dance for electrons in graphene

Tue, 01/16/2018 - 19:08
A team of researchers has devised a simple way to tune a hallmark quantum effect in graphene - the material formed from a single layer of carbon atoms - by bathing it in light.

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Perovskite solar cells: perfection not required

Tue, 01/16/2018 - 19:02
Experiments reveal why even inhomogeneous perovskite films are highly functional.

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X-rays reveal 'handedness' in swirling electric vortices

Tue, 01/16/2018 - 18:54
Scientists study exotic material's properties, which could make possible a new form of data storage.

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Nanofluidics - recent progress

Tue, 01/16/2018 - 18:24
Nanofluidics is the study and application of fluids in and around geometries with nanoscale characteristic dimensions. The field of nanofluidics is not brand-new. Some issues associated with nanoscale fluidics have been occasionally dealt with by researchers in membrane science, colloid science, and chemical engineering for many decades. A recent review article provides a selected overview of the recent progress, rather than a comprehensive review of the entire field.

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Slow 'hot electrons' could improve solar cell efficiency

Tue, 01/16/2018 - 17:22
Photons with energy higher than the 'band gap' of the semiconductor absorbing them give rise to what are known as hot electrons. Scientists have now found a material in which these hot electrons retain their high energy levels for much longer.

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Two zero-gravity experiments pushing the frontier of graphene's potential

Tue, 01/16/2018 - 17:16
Two recent experiments to assess, for the first time, the viability of graphene for space applications. The experiments tested the material under zero-gravity conditions specifically for light propulsion and also for thermal management applications, with very encouraging results.

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A catalyst for change in chemical nanohole etching

Tue, 01/16/2018 - 12:59
A simple, versatile and low-cost technique for etching nanoholes in silicon could underpin new filtration and nanophotonic devices.

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Nanomedicine taking a stab at microbes

Tue, 01/16/2018 - 12:55
Arrays of tiny, rigid, and sharp pillars mimic natural antimicrobial surfaces by binding and breaking bacterial cells open.

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Clever simulation scheme helps identify the most promising compositions of 2D materials

Tue, 01/16/2018 - 12:50
A high-throughput scan of possible compositions for a new class of materials known as MXenes gives researchers invaluable direction for picking the best candidate from the millions of possible material recipes.

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3D printed microfibers could provide structure for artificially grown body part

Tue, 01/16/2018 - 00:29
Much as a frame provides structural support for a house and the chassis provides strength and shape for a car, a team of engineers believe they have a way to create the structural framework for growing living tissue using an off-the-shelf 3-D printer.

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Solar fuels: better efficiency using microwires

Mon, 01/15/2018 - 19:39
Using only earth-abundant materials, researchers have developed the most efficient direct conversion method of energy from sunlight into hydrogen to date.

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Gyroscopes lead scientists to unusual state of matter in a disorganized structure

Mon, 01/15/2018 - 19:27
Using a set of gyroscopes linked together, physicists explored the behavior of a material whose structure is arranged randomly, instead of an orderly lattice.

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New center to develop next-generation computing technologies

Mon, 01/15/2018 - 17:09
A new $26 million center led by the University of Notre Dame will focus on conducting research that aims to increase the performance, efficiency and capabilities of future computing systems for both commercial and defense applications.

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Researchers measure single atoms in a graphene 'petri-dish'

Mon, 01/15/2018 - 17:04
Researchers have shown that graphene and boron nitride can be combined to create a perfect nano petri-dish. Liquid samples inside the dish can be imaged with single atom sensitivity and it is also possible to measure their elemental composition at the nanometre length scale.

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Scalable synthesis of nanoporous metal structures

Mon, 01/15/2018 - 16:42
A simple, versatile, scalable synthesis route to nanoporous metals via solid-state conversion reactions.

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Protein handshake on the nanoscale

Mon, 01/15/2018 - 16:28
A new study shows that it is possible to create hybrid protein nanofibers composed of two plasma proteins using a facile self-assembly approach supported by ethanol-induced protein denaturation.

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A serological point-of-care test for detecting Ebola

Mon, 01/15/2018 - 16:17
The new approach uses lateral flow technology, similar to that of a pregnancy test, coupled with smartphones to provide a promising alternative to lab-based testing.

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The first precise measurement of a single molecule's effective charge

Mon, 01/15/2018 - 12:01
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight could also pave the way for future medical diagnostics.

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Nanostructured gate dielectric boosts stability of organic thin-film transistors

Sat, 01/13/2018 - 19:47
The structure, composed of a fluoropolymer layer followed by a nanolaminate made from two metal oxide materials, serves as gate dielectric and simultaneously protects the organic semiconductor and enables the transistors to operate with unprecedented stability.

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Fast-moving electrons create current in organic solar cells

Sat, 01/13/2018 - 19:39
Researchers have identified the mechanism that allows organic solar cells to create a charge, solving a longstanding puzzle in physics.

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