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Superslippery coating became transparent and more durable
A team of researchers led by Joanna Aizenberg of Harvard University Wyss (Wyss Institute for Biologically Inspired Engineering) improved the properties of the so-called “slippery, fluid-filled porous surfaces» (Slippery Liquid-Infused Porous Surfaces, SLIPS), she also developed in 2012. Ultragladkaya surface, which, as the scientists say, is the most slippery of all currently known synthetic surfaces, recently became transparent and more durable. New technology repellent adhesives prevents formation of ice crystals and biological films on the surfaces to which it is applied.
Instead of the lotus leaf, which became the inspiration for the creation of many superhydrophobic surfaces, SLIPS technology was borrowed from carnivorous plants with extremely slippery leaves, helping them to catch unsuspecting insects. Giving synthetic surface transparent and strength properties, scientists have substantially broadened its scope. Technology will create a shock-and scratch-resistant lenses, self-cleaning windows, solar panels and medical equipment of the new generation.
How did the new surface? Researchers placed on a smooth glass surface of polystyrene particles, and then half filled with liquid crystal. Once the material is dry, they burned the particles, receiving network crater-like honeycomb. Then craters covered a lubricant.
The scientists found that the treated this way smooth slides made strong slides, just covered SLIPS. And both are equally slippery glass and resistant to various fluids, whether it is wine, olive oil, ketchup or gasoline. Property to repel water, preventing the formation of ice crystals, making it possible to use technology to improve the protection of high-voltage lines, aircraft and cooling systems from freezing.
By making the diameter of an individual cell is less than the wavelength of visible light, researchers were clearcoat not devoid strength and slipperiness. Today, researchers are working to improve the properties of the new surface with respect to the flexible glass and transparent plastic.
The video below shows the hour glass coated SLIPS.
Meanwhile, in the laboratory of the Department of Polymer Science and Technology Zhejiang University have developed the lightest material in the world .
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Tags: SLIPS , Wyss Institute , Materials .
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