Aluminum nanowire polarizing grids: Fabrication and analysis

  • Vincent Pelletier
    Princeton University Department of Physics, , Princeton, New Jersey 08544 and Princeton Institute for the Science and Technology of Materials, , Princeton, New Jersey 08540
  • Koji Asakawa
    Princeton University Princeton Institute for the Science and Technology of Materials, , Princeton, New Jersey 08540 and Corporate Research and Development Center, , Kawasaki, 212-8582, Japan
  • Mingshaw Wu
    Princeton University Department of Physics, , Princeton, New Jersey 08544 and Princeton Institute for the Science and Technology of Materials, , Princeton, New Jersey 08540
  • Douglas H. Adamson
    Princeton University Princeton Institute for the Science and Technology of Materials, , Princeton, New Jersey 08540
  • Richard A. Register
    Princeton University Department of Chemical Engineering, , Princeton, New Jersey 08544 and Princeton Institute for the Science and Technology of Materials, , Princeton, New Jersey 08540
  • Paul M. Chaikin
    Princeton University Department of Physics, , Princeton, New Jersey 08544; Princeton Institute for the Science and Technology of Materials, , Princeton, New Jersey 08540; Department of Physics, , New York, New York 10003; and Center for Soft Condensed Matter Research, , New York, New York 10003

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<jats:p>We have produced metal wire grids with 33nm periodicity, using a thin film of a self-assembling diblock copolymer as a template. These grids, supported on fused quartz wafers, function as transmission polarizers for visible and near-ultraviolet lights. Their polarization efficiency is measured to be near 50% in the visible. Quantitative comparison with a new theoretical analysis of such wire grids indicates that they should perform well into the far UV. This analysis also explains the reversal in polarization direction at shorter wavelengths which we observe in our specimens.</jats:p>

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