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Touch Screens Repel Fluids, Cut Glare and Still Look Good

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BARCELONA, Spain, July 17, 2014 — Touch screens with nanostructured surfaces that ward off glare, reflection and fluids could easily be mass-produced, according to researchers from the Institute of Photonic Sciences. In one study, the researchers demonstrated a highly transparent glass display screen with static contact angles of more than 170° for water and 160° for oil using a two-tier structure of 100- to 200-nm nanopillars and 10- to 30-nm branches. Previous studies were able to achieve omniphobicity at the expense of light transparency and through visibility, the researchers said. But their glass...Read full article

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    Published: July 2014
    Glossary
    glass
    A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or phosphoric oxides. Common window or bottle glass is a mixture of soda, lime and sand, melted and cast, rolled or blown to shape. Most glasses are transparent in the visible spectrum and up to about 2.5 µm in the infrared, but some are opaque such as natural obsidian; these are, nevertheless, useful as mirror blanks. Traces of some elements such as cobalt, copper and...
    hydrophobic
    Hydrophobic is a term used to describe substances or materials that repel or do not readily interact with water. The word hydrophobic comes from the Greek words "hydro," meaning water, and "phobos," meaning fear. Hydrophobic substances typically have nonpolar molecules or regions in their structure, which means there is an even distribution of charge. Water is a polar molecule, with oxygen attracting electrons more strongly than hydrogen. Hydrophobic substances are often nonpolar or have...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    reflection
    Return of radiation by a surface, without change in wavelength. The reflection may be specular, from a smooth surface; diffuse, from a rough surface or from within the specimen; or mixed, a combination of the two.
    scattering
    Change of the spatial distribution of a beam of radiation when it interacts with a surface or a heterogeneous medium, in which process there is no change of wavelength of the radiation.
    transparency
    An image affixed to a transparent photographic film or plate by photographic, printing or chemical methods. It may be viewed by transmitted light.
    BarcelonaDisplaysEuropeglareglasshydrophobiciceInstitute of Photonic Scienceslight transmissionnanoNano Lettersnanosprayreactive ion etchingreflectionResearch & Technologyscatteringself-cleaningsolar panelsSpainsurfacestouch screenstransparencywindowsomniphobiclithography-free metal dewettingcombustion chemical vapor depositionACS Applied Materials & Interfaces

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