Science

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NASA’s New Horizons Discovers Frozen Plains in the Heart of Pluto’s ‘Heart’

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In the center left of Pluto’s vast heart-shaped feature – informally named “Tombaugh Regio” - lies a vast, craterless plain that appears to be no more than 100 million years old, and is possibly still being shaped by geologic processes. This frozen region is north of Pluto’s icy mountains and has been informally named Sputnik Planum (Sputnik Plain), after Earth’s first artificial satellite. The surface appears to be divided into irregularly-shaped segments that are ringed by narrow troughs. Features that appear to be groups of mounds and fields of small pits are also visible. This image was acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as one-half mile (1 kilometer) across are visible. The blocky appearance of some features is due to compression of the image.

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Frozen Plains in the Heart of Pluto’s 'Heart'

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This annotated view of a portion of Pluto’s Sputnik Planum (Sputnik Plain), named for Earth’s first artificial satellite, shows an array of enigmatic features. The surface appears to be divided into irregularly shaped segments that are ringed by narrow troughs, some of which contain darker materials. Features that appear to be groups of mounds and fields of small pits are also visible. This image was acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as a half-mile (1 kilometer) across are visible. The blocky appearance of some features is due to compression of the image.

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U.S. Navy Researchers First to Find Spin Precession in Silicon Nanowires

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False color atomic force microscopy image of a silicon nanowire with the four contacts used in the spin measurements. The ferromagnetic metal/graphene tunnel barrier contacts used to inject and detect spin appear as blue, the gold ohmic reference contacts appear as yellow, and the green line is the silicon nanowire transport channel. The bright dot on the end of the nanowire is the gold nanoparticle used to seed the nanowire growth.

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Plantations of nanorods on carpets of graphene capture the Sun's energy

The Sun can be a better chemist, thanks to zinc oxide nanorod arrays grown on a graphene substrate and "decorated" with dots of cadmium sulphide. In the presence of solar radiation, this combination of zero and one-dimensional semiconductor structures with two-dimensional graphene is a great catalyst for many chemical reactions. The innovative photocatalytic material has been developed by a group of scientists from the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw and Fuzhou University in China.

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This is the microscopic image of the novel 3D photocatalytic material, designed by scientists from the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, Poland, and the Fuzhou University, China.

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On the way to breaking the terahertz barrier for graphene nanoelectronics: Simple thermodynamics defines the performance of ultrafast graphene transistors and photodetectors

A team of scientists at the Max Planck Institute for Polymer Research (MPI-P) discovered that electrical conduction in graphene on the picosecond timescale - a picosecond being one thousandth of one billionth of a second - is governed by the same basic laws that describe the thermal properties of gases. This much simpler thermodynamic approach to the electrical conduction in graphene will allow scientists and engineers not only to better understand but also to improve the performance of graphene-based nanoelectronic devices.

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Interaction of the terahertz field with graphene leads to efficient electron heating, which in turn strongly changes graphene conductivity.

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Molecular fuel cell catalysts hold promise for efficient energy storage

In the quest for better, less expensive ways to store and use energy, platinum and other precious metals play an important role. They serve as catalysts to propel the most efficient fuel cells, but they are costly and rare.

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A team of chemists from the University of Wisconsin-Madison has introduced a new fuel cell catalyst approach that uses a molecular catalyst system instead of solid catalysts.

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Nanomembranes Boost Efficiency in Wastewater Treatment

Iranian researchers designed a nanomembrane to purify dye and industrial wastewater in one stage with very high efficiency.

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NASA Study Finds Indian, Pacific Oceans Temporarily Hide Global Warming

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Temperature data from the global ocean (2003-2012) at four depths shows the warmest water at depths of about 330-660 feet (third panel from top) in the western Pacific and Indian Oceans.

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A tunable, highly sensitive graphene-based molecule sensor: Researchers at EPFL and ICFO have developed a reconfigurable sensor made from graphene to detect nanomolecules such as proteins and drugs; the device exploits the unique electronic and optical pr

Many areas of fundamental research are interested in graphene owing to its exceptional characteristics. It is made of one layer of carbon atoms, which makes it light and sturdy, and it is an excellent thermal and electrical conductor. Its unique features make it potentially suitable for applications in a number of areas . Scientists at EPFL's Bionanophotonic Systems Laboratory (BIOS) together with researchers from ICFO- The Institute of Photonic Sciences in Barcelona, have now harnessed graphene's unique optical and electronic properties to develop a reconfigurable highly sensitive molecule sensor. The results are described in an article appearing in the latest edition of the journal Science.

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Mid-infrared graphene molecule sensor

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NASA Missions Have Their Eyes Peeled on Pluto

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Artist conception of New Horizons Spacecraft.