Science

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Nanoliposomes Help Efforts to Cure Bacterial Infections

Iranian researchers from Mashhad University of Medical Sciences applied nanotechnology to treat bacterial infections.

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Carbon nanoballs can greatly contribute to sustainable energy supply

Researchers at Chalmers University of Technology have discovered that the insulation plastic used in high-voltage cables can withstand a 26 per cent higher voltage if nanometer-sized carbon balls are added. This could result in enormous efficiency gains in the power grids of the future, which are needed to achieve a sustainable energy system.

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The C60 carbon ball consists of 60 carbon atoms that are placed so that the molecule resembles a nanometer-sized football.

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Nanoparticles Increase Durability of Concrete Decorations in Cold Areas

Iranian researchers from Isfahan University of Technology studied the effect of nanoparticles on increasing the durability and lifetime of concrete decorations in cold areas.

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Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates

Iranian researchers designed and built solar cells doing well in converting solar energy into electricity, using Nano-technology.

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The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties

Theoretical physicists at Rice University are living on the edge as they study the astounding properties of graphene. In a new study, they figure out how researchers can fracture graphene nanoribbons to get the edges they need for applications.

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Graphene nanoribbons can be enticed to form favorable "reconstructed" edges by pulling them apart with the right force and at the right temperature, according to researchers at Rice University. The illustration shows the crack at the edge that begins the formation of five- and seven-atom pair under the right conditions.

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Nanosensor Used for Simultaneous Determination of Effective Tea Components

Researchers from University of Tehran used a simple, cost-effective and eco-friendly method to produce a sensor based on graphene nano-sheets with high sensitivity and simultaneously measure useful components of tea.

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Iranian Scientists Produce Graphene-Based Oxygen Sensor

Academic researchers in Iran succeeded in the production of graphene-based gas sensor, which has applications in various industries to determine oxygen.

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Rosetta Comet 'Pouring' More Water Into Space

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This animation comprises 24 montages based on images acquired by the navigation camera on the European Space Agency's Rosetta spacecraft orbiting Comet 67P/Churyumov-Gerasimenko between Nov. 19 and Dec. 3, 2014.

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New technique helps probe performance of organic solar cell materials

Bulk heterojunction (BHJ) organic solar cells are fabricated with the polymer semiconductor aligned in the plane of the film to probe charge recombination losses associated with aggregates characterized by varying degrees of local order. 100% uniaxial strain is applied on ductile poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PCBM) BHJ films and characterize the resulting morphology with ultraviolet-visible absorption spectroscopy and grazing incidence X-ray diffraction. It is found that the strained films result in strong alignment of the highly ordered polymer aggregates. Polymer aggregates with lower order and amorphous regions also align but with a much broader orientation distribution. The solar cells are then tested under linearly polarized light where the light is selectively absorbed by the appropriately oriented polymer, while maintaining a common local environment for the sweep out of photogenerated charge carriers. Results show that charge collection losses associated with a disordered BHJ film are circumvented, and the internal quantum efficiency is independent of P3HT local aggregate order near the heterojunction interface. Uniquely, this experimental approach allows for selective excitation of distinct morphological features of a conjugated polymer within a single BHJ film, providing insight into the morphological origin of recombination losses.

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In-Plane Alignment in Organic Solar Cells to Probe the Morphological Dependence of Charge Recombination.

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Helicopter Could be 'Scout' for Mars Rovers

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A proposed helicopter could triple the distances that Mars rovers can drive in a Martian day and help pinpoint interesting targets for study.

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