Science

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NASA MESSENGER and STEREO Measurements Open New Window Into High- Energy Processes on the Sun

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A solar flare erupted on the far side of the sun on June 4, 2011, and sent solar neutrons out into space. Solar neutrons don't make it to all the way to Earth, but NASA's MESSENGER, orbiting Mercury, found strong evidence for the neutrons, offering a new technique to study these giant explosions.

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VLT Clears Up Dusty Mystery

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A group of astronomers has been able to follow stardust being made in real time — during the aftermath of a supernova explosion. For the first time they show that these cosmic dust factories make their grains in a two-stage process, starting soon after the explosion, but continuing for years afterwards. The team used ESO's Very Large Telescope (VLT) in northern Chile to analyse the light from the supernova SN2010jl as it slowly faded.

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Using Sand to Improve Battery Performance: Researchers develop low cost, environmentally friendly way to produce sand-based lithium ion batteries that outperform standard by three times

Researchers at the University of California, Riverside's Bourns College of Engineering have created a lithium ion battery that outperforms the current industry standard by three times. The key material: sand. Yes, sand.

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Schematic showing how sand is turned into pure nano-silicon.

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New Discovery in Living Cell Signaling

Berkeley Lab Researchers Help Find That What Was Believed to be Noise is an Important Signaling Factor.

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This gif of membrane-anchored Ras (red) and SOS molecules (green) shows individual SOS molecules corraled in nanofabricated patches where all the Ras molecules they activate can be trapped.

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With 'ribbons' of graphene, width matters: A narrow enough ribbon will transform a high-performance conductor into a semiconductor

Using graphene ribbons of unimaginably small widths - just several atoms across - a group of researchers at the University of Wisconsin-Milwaukee (UWM) has found a novel way to "tune" the wonder material, causing the extremely efficient conductor of electricity to act as a semiconductor.

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Yaoyi Li (foreground) and Mingxing Chen, UWM physics postdoctoral researchers, display an image of a ribbon of graphene 1 nanometer wide. In the image, achieved with a scanning-tunneling microscope, atoms are visible as "bumps."

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New Method Introduced for Synthesis of Hydroxyapatite Nanoparticles

Iranian researchers used a new method to produce hydroxyapatite powder with smaller size and lower cost.

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Newfound Frozen World Orbits in Binary Star System

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This artist's rendering shows a newly discovered planet (far right) orbiting one star (right) of a binary star system. The discovery, made by a collaboration of international research teams and led by researchers at The Ohio State University, expands astronomers' notions of where to look for planets in our galaxy. The research was funded in part by NASA.

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Making dreams come true: Making graphene from plastic?

Graphene is gaining heated attention, dubbed a "wonder material" with great conductivity, flexibility and durability. However, graphene is hard to come by due to the fact that its manufacturing process is complicated and mass production not possible. Recently, a domestic research team developed a carbon material without artificial defects commonly found during the production process of graphene while maintaining its original characteristics. The newly developed material can be used as a substitute for graphene in solar cells and semiconductor chips. Further, the developed process is based on the continuous and mass-produced process of carbon fiber, making it much easier for full-scale commercialization.

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How to manufacture transparent and conductive carbon nanosheet using PIM-1 polymer solution: (a) Quart substrate is being coated with PIM-1 polymer solution with ladder structure and conducts heating in high temperature to manufacture carbon nanosheet. Without any additional process OSC (organic solar cell) can be made directly on the sheet to manufacture solar cells. (b), (c), (d) show thickness, surface resistivity and transparency of the carbon nanosheet, respectively in relation to the concentration of PIM-1. Also, the new method easily controls the unwanted effects from the electronic and optical characteristics of carbon nanosheet, which is produced when the polymer solution is concentrated. As the high molecule solution concentration gets higher as shown in (Axis X, (b),(c)), the thicker it gets as shown in Figure (b) but, it becomes less resistant as shown in Figure (c), and the current flow better.

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New Model Presented to Study Postbuckling Behavior of Nano/Microbeams

Iranian mechanical researchers from Shiraz University studied the effects of heat on postbuckling behavior of nano/microbeams and corrected the inconsistency in the correlations.

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3D Map Shows Dusty Structure of the Milky Way

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From top to bottom: Extinction map at 3, 2 and 1 kiloparsec. The map is coloured according to how much dust lies in each direction in the northern Milky Way. The red/brown areas are dustiest directions.