Science

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NIST shows ultrasonically propelled nanorods spin dizzyingly fast

Vibrate a solution of rod-shaped metal nanoparticles in water with ultrasound and they'll spin around their long axes like tiny drill bits. Why? No one yet knows exactly. But researchers at the National Institute of Standards and Technology (NIST) have clocked their speed—and it's fast. At up to 150,000 revolutions per minute, these nanomotors rotate 10 times faster than any nanoscale object submerged in liquid ever reported.

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In this image, a nanoparticle traces the microvortical flow around a nanorod rotating at up to 150,000 RPM propelled by ultrasound.

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Iranian Scientists Use Nanosensors to Achieve Best Limit for Early Cancer Diagnosis

Iranian researchers from Nanobiotechnology Department of the University of Tehran designed a nanosensor that has the highest reported value of sensitivity in the diagnosis of cancer.

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Japan’s aid guided by clear vision and priorities but should focus on countries and people most in need

Japan has increased its spending on overseas development assistance (ODA) and is showing more global leadership, but needs to pay more attention to where it is spending the money and increase its focus on results and transparency.

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Fundamental Chemistry Findings Could Help Extend Moore’s Law: A Berkeley Lab-Intel collaboration outlines the chemistry of photoresist, enabling smaller features for future generations of microprocessors

Over the years, computer chips have gotten smaller thanks to advances in materials science and manufacturing technologies. This march of progress, the doubling of transistors on a microprocessor roughly every two years, is called Moore's Law. But there's one component of the chip-making process in need of an overhaul if Moore's law is to continue: the chemical mixture called photoresist. Similar to film used in photography, photoresist, also just called resist, is used to lay down the patterns of ever-shrinking lines and features on a chip.

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When a low concentrations of crosslinker is added to resist (left), it is able to pattern smaller features and doesn’t require longer, expensive exposures as with a high concentrations of crosslinker (right).

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CIQUS researchers develop an extremely simple procedure to obtain nanosized graphenes

The prestigious journal Angewandte Chemie (link is external) has recently published a work by CiQUS researchers (University of Santiago de Compostela, Spain) in collaboration with IBM Research - Zurich (Switzerland), which describes an extremely simple method to obtain high quality nanographenes from easily available organic compounds.

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Atomic force microscopy (AFM) image of a clover-shaped nanographenes

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NASA Turns Over Next-Generation Air Traffic Management Tool to Federal Aviation Administration

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As seen in this image, Terminal Sequencing and Spacing technology enables air traffic controllers to better manage the spacing between aircraft as they save both time and fuel and reducing emissions, flying more efficient approaches into airports.

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Looking Back at the Jupiter Crash 20 Years Later

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NASA's Galileo spacecraft captured these four views of Jupiter as the last of comet Shoemaker-Levy 9's large fragments struck the planet.

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NASA Rover's Images Show Laser Flash on Martian Rock

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Adopting the euro: criteria, decision-making and the next countries in line

The euro zone could get bigger next year. After the European Commission said Lithuania was ready to adopt the common currency, the Parliament will vote on its opinion on 16 July. The final decision will be made by the Council at the end of July. Read on to find out how countries are assessed to see if they are ready to join the euro zone.

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Researchers discover boron 'buckyball'

The discovery of buckyballs — soccer-ball-shaped molecules of carbon — helped usher in the nanotechnology era. Now, Lai-Sheng Wang's research group and colleagues from China have shown that boron, carbon's neighbor on the periodic table, can form a cage-like molecule similar to the buckyball. Until now, such a boron structure had only been a theoretical speculation. The researchers dubbed their newfound nanostructure "borospherene."

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The carbon buckyball has a boron cousin. A cluster for 40 boron atoms forms a hollow cage-like molecule.

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