Science

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Chemists make new silicon-based nanomaterials

In a paper published in the journal Nanoletters, the researchers describe methods for making nanoribbons and nanoplates from a compound called silicon telluride. The materials are pure, p-type semiconductors (positive charge carriers) that could be used in a variety of electronic and optical devices. Their layered structure can take up lithium and magnesium, meaning it could also be used to make electrodes in those types of batteries.

"Silicon-based compounds are the backbone of modern electronics processing," said Kristie Koski, assistant professor of chemistry at Brown, who led the work. "Silicon telluride is in that family of compounds, and we've shown a totally new method for using it to make layered, two-dimensional nanomaterials."

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How green tea could help improve MRIs

Green tea's popularity has grown quickly in recent years. Its fans can drink it, enjoy its flavor in their ice cream and slather it on their skin with lotions infused with it. Now, the tea could have a new, unexpected role — to improve the image quality of MRIs. Scientists report in the journal ACS Applied Materials & Interfaces that they successfully used compounds from green tea to help image cancer tumors in mice.

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Compounds from green tea could boost the quality of biomedical imaging.

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Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases

Diagnosis and drug delivery for diseases like cancer, cardiovascular and genetic ailments has always been a concern. In recent years, however, new strides and developments in the nano-medicine market have facilitated more effective diagnosis and drug delivery for diseases. Not only can these diseases now be studied better but it will also help us in making informed decisions producing better cures. The nano-medicine market is on a steady growth and with a compound annual growth rate (CAGR) of 12.5% from 2011; the market size will reach to $130.9 billion by 2016.

Nanotechnologies in Drug Delivery Congress organized by Markets and Markets Conferences is gathering industry experts from the nano-medicine market who will look at these developments and also present new ideas. Supported by the French Society for Nanomedicine, the congress will be held on 27 - 28 April 2015 in London, UK. Speaking at the congress will be AstraZeneca, Nemaura Pharma, Lloyds Register Quality Assurance, Cytoviva, World Nano Foundation, King's College London, Institute for Biological and Medical Imaging, Uppsala University and University of Oxford among others.

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First proof of isolated attosecond pulse generation at the carbon K-edge

In a recent study, "Spatiotemporal isolation of attosecond pulses in the soft X-ray water window " published in Nature Communications by the Attoscience and Ultrafast Optics Group, led by ICREA Professor at ICFO Jens Biegert, the generation of isolated attosecond pulses at the carbon K-edge at 284 eV (4.4 nm), within the water window range, was achieved.

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This image shows an attosecond emission steering with CEP phase.

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Nanodevice Invented in Iran to Detect Hydrogen Sulfide in Oil, Gas Industry

Iranian researchers from Semiconductor Devices Group of Shiraz University designed a sensor to detect hydrogen sulfide in oil drilling, oil refineries, coal mines and wells containing organic materials.

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Nanotechnology Raises Possibility to Produce Strongest Commercial Pure Aluminum Alloy

Iranian researchers from Amirkabir University of Technology in association with Spanish researchers presented a new process to obtain highly strong ultrafine grained and nanostructured materials.

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NASA’s SOFIA Finds Missing Link Between Supernovae and Planet Formation

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SOFIA data reveal warm dust (white) surviving inside a supernova remnant. The SNR Sgr A East cloud is traced in X-rays (blue). Radio emission (red) shows expanding shock waves colliding with surrounding interstellar clouds (green).

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New Tech = Faster, Better Dental Work

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The Computer Aided Design and Computer Aided Machining fabricator designs a molar for tooth restoration on Joint Base Andrews Dec. 1, 2014.

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Clean energy future: New cheap and efficient electrode for splitting water

UNSW Australia scientists have developed a highly efficient oxygen-producing electrode for splitting water that has the potential to be scaled up for industrial production of the clean energy fuel, hydrogen. The new technology is based on an inexpensive, specially coated foam material that lets the bubbles of oxygen escape quickly.

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A scanning electron microscope image shows the porous structure of the nickel foam used to make UNSW Australia's inexpensive and efficient oxygen-producing electrode. The foam has holes in it about 200 micrometers across (Scale bar is 200 micrometers)

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Data structures influence speed of quantum search in unexpected ways: Highly connected structures don't always support fastest quantum computing

Using the quantum property of superposition, quantum computers will be able to find target items within large piles of data far faster than conventional computers ever could. But the speed of the search will likely depend on the structure of the data.

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Quantum search slows unexpectedly on the highly connected data structure represented by this graph. Mathematical description: a 5-simplex with each vertex replaced with a complete graph of 5 vertices.