Science

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Novel non-stick material joins portfolio of slippery surface technologies: Infusing liquids into polymers makes long lasting, self-replenishing material that repels deadly bacterial build-up

More than 80 percent of microbial infections in the human body are caused by a build-up of bacteria, according to the National Institutes of Health. Bacteria cells gain a foothold in the body by accumulating and forming into adhesive colonies called biofilms, which help them to thrive and survive but cause infections and associated life-threatening risks to their human hosts. These biofilms commonly form on medical surfaces including those of mechanical heart valves, urinary catheters, intravenous catheters, and implants. But a new study reported in the inaugural issue of ACS Biomaterials Science and Engineering demonstrates a powerful, long-lasting repellent surface technology that can be used with medical materials to prevent infections caused by biofilms.

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Liquid–infused polymers absorb slippery lubricants like a sponge, rendering surfaces continuously slippery for long–lasting preventative effects against deadly infections caused by bacterial biofilms. In this experiment, biofilm formation on the right side of medical tubing is visible after being stained, whereas the treated section of the tubing on the left remains free of biofilms.

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Iranian Scientists Introduce Simple Method to Eliminate Nitrate, Nitrite from Water, Soil

Iranian researchers from Islamic Azad University in association with a researcher from Finland produced a magnetic nanosorbent that adsorbs 60-100% of nitrate and nitrite existing in the sample.

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Corrosion Resistance of Copper Increased by Nanocoatings

Iranian researchers from Uremia University succeeded in the production of a new type of nanocoating to increase the corrosion resistance of copper.

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Iranian Researchers Design Low-Price Nano-Method for Water Treatment

Iranian researchers designed a new cost-effective method for water purification, separating heavy metals from water using nano-technology.

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Production of New Nanocatalyst in Iran with Application in Pharmaceutical, Oil Industries

Iranian researchers from Birjand University used nanotechnology and produced a magnetic nanocatalyst that can be used many times without any reduction in its activity.

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Production of Nanocatalyst Applicable in Synthesis of Organic Compounds

Iranian researchers succeeded in the production of a new nanocatalyst which eliminates the need for application of organic solvents in the synthesis of organic compounds.

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NASA's Curiosity Analyzing Sample of Martian Mountain

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Gray cuttings from Curiosity's drilling into a target called "Mojave 2" are visible surrounding the sample-collection hole in this Jan. 31, 2015, image from the rover's MAHLI camera. This site in the "Pahrump Hills" outcrop provided the mission's second drilled sample of Mars' Mount Sharp.

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Cesium atoms shaken, not stirred, to create elusive excitation in superfluid

Scientists discovered in 1937 that liquid helium-4, when chilled to extremely low temperatures, became a superfluid that could leak through glass, overflow its containers, or eternally gush like a fountain.

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University of Chicago scientists can create an exotic, particle-like excitation called a roton in superfluids with the tabletop apparatus pictured here. Posing from left are graduate students Li-Chung Ha and Logan Clark, and physics Professor Cheng Chin.

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Cesium atoms shaken, not stirred, to create elusive excitation in superfluid

Scientists discovered in 1937 that liquid helium-4, when chilled to extremely low temperatures, became a superfluid that could leak through glass, overflow its containers, or eternally gush like a fountain.

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University of Chicago scientists can create an exotic, particle-like excitation called a roton in superfluids with the tabletop apparatus pictured here. Posing from left are graduate students Li-Chung Ha and Logan Clark, and physics Professor Cheng Chin.

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X-ray pulses uncover free nanoparticles for the first time in 3-D 'Super microscope' reveals unexpected variety of shapes

For the first time, a German-American research team has determined the three-dimensional shape of free-flying silver nanoparticles, using DESY's X-ray laser FLASH. The tiny particles, hundreds of times smaller than the width of a human hair, were found to exhibit an unexpected variety of shapes, as the physicists from the Technical University (TU) Berlin, the University of Rostock, the University of Rostock, the SLAC National Accelerator Laboratory in the United States and from DESY report. Besides this surprise, the results open up new scientific routes, such as direct observation of rapid changes in nanoparticles.

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This is a wide-angle X-ray diffraction image of a truncated twinned tetrahedra nanoparticle.