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Nanoscale Features Used to Color Plastics

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Nanoscale structures could one day take the place of dyes in the production of colored plastics. A team from the Technical University of Denmark has found a more environmentally friendly way to produce such plastics, using the shapes of materials rather than conventional dyes and pigments. Use of these unnatural materials makes it difficult for that type of plastic to be recycled. The researchers found that aluminum can be made to appear in different colors “purely by designing their surface structures at the nanoscopic level.” The researchers chose aluminum because of...Read full article

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    Published: July 2014
    Glossary
    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.
    near-infrared
    The shortest wavelengths of the infrared region, nominally 0.75 to 3 µm.
    aluminumLEDsDanish National Advanced Technology FoundationDenmarkEuropeEuropean CommissiongoldLight SourcesMaterialsnanonanoholesnear-infraredOpticsplasticsResearch & TechnologysilverTechnical University of Denmarklocalized surface plasmon resonancesplasmonic metasurfacesnanodisksinterband absorptionDanish Agency for Science Technology and InnovationTech Pulse

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