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Iranian Scientists Refine Wastewater of Nuclear Power Plants Using Nanoparticles

Iranian researchers from Zabol University designed and produced a type of sorbent nanoparticles to extract small amounts of uranium from wastewater.

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Simple, Biocompatible Method Developed for Production of Antibacterial Cotton Fabrics

Iranian researchers from Amirkabir University of Technology presented a simple and cost-effective method for the production of antibacterial cotton fabrics.

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Graphene layer reads optical information from nanodiamonds electronically: Possible read head for quantum computers

Nitrogen-vacancy centers in diamonds could be used to construct vital components for quantum computers. But hitherto it has been impossible to read optically written information from such systems electronically. Using a graphene layer, a team of scientists headed by Professor Alexander Holleitner of the Technische Universität München has now implemented just such a read unit.

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Vision of a future quantum computer with chips made of diamond and graphene

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Single-atom gold catalysts may offer path to low-cost production of fuel and chemicals

New catalysts designed and investigated by Tufts University School of Engineering researchers and collaborators from other university and national laboratories have the potential to greatly reduce processing costs in future fuels, such as hydrogen. The catalysts are composed of a unique structure of single gold atoms bound by oxygen to several sodium or potassium atoms and supported on non-reactive silica materials. They demonstrate comparable activity and stability with catalysts comprising precious metal nanoparticles on rare- earth and other reducible oxide supports when used in producing highly purified hydrogen.

The work, which appears in the November 27, 2014, edition of Science Express, points to new avenues for producing single-site supported gold catalysts that could produce high-grade hydrogen for cleaner energy use in fuel-cell powered devices, including vehicles.

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Production of Anticancer Drug from Nanofibers in Iran

Iranian researchers produced a new nanodrug and investigated its applications to increase the effectiveness and performance of anticancer drugs.

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Laser link offers high-speed delivery

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The gold standard for EDRS.

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The mysterious 'action at a distance' between liquid containers

For several years, it has been known that superfluid helium housed in reservoirs located next to each other acts collectively, even when the channels connecting the reservoirs are too narrow and too long to allow for substantial flow. A new theoretical model reveals that the phenomenon of mysterious communication "at a distance" between fluid reservoirs is much more common than previously thought.

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When large reservoirs are connected by very narrow and long channels, the liquid in each reservoir acts independently of the liquid in adjacent reservoirs. In the microworld, the physics is different: if the liquid filling the reservoirs complies with certain conditions (the most important of which is that the fluid is at coexistence between its two phases), even surprisingly small channels can correlate the state of the liquid in adjacent reservoirs.

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'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films

In metals such as copper or aluminium, so-called conduction electrons are able to move around freely, in the same way as particles in a gas or a liquid. If, however, impurities are implanted into the metal's crystal lattice, the electrons cluster together in a uniform pattern around the point of interference, resembling the ripples that occur when a stone is thrown into a pool of water. Scientists in Jülich have, with the help of computer simulations, now discovered a combination of materials that strengthens these Friedel oscillations and bundles them, as if with a lens, in different directions. With a range of 50 nanometers, these "giant anisotropic charge density oscillations" are many times greater than normal and open up new possibilities in the field of nanoelectronics to exchange or filter magnetic information.

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Electron density oscillations on the surface of a metallic film were made visible with the help of low temperature scanning tunneling microscopy.

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Research yields material made of single-atom layers that snap together like Legos

Physicists at the University of Kansas have fabricated an innovative substance from two different atomic sheets that interlock much like Lego toy bricks. The researchers said the new material — made of a layer of graphene and a layer of tungsten disulfide — could be used in solar cells and flexible electronics.

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NRL Scientists Discover Novel Metamaterial Properties within Hexagonal Boron Nitride

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Periodic arrays of cone-shaped hexagonal boron nitride (hBN) nanoantennas, depicted magnified image above, were used to confine hyperbolic polaritons in all three dimensions. This enabled the researchers to fundamentally probe the novel optical properties within these materials and demonstrate the highly directional, low loss hyperbolic polaritons that are confined within the volume of the antennas. These results provide the first foray into natural hyperbolic materials as building blocks for nanophotonic devices in the mid-infrared to terahertz (THz) spectral range.

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