Cover Picture: Spatially Graded Nanostructured Chiral Films as Tunable Circular Polarizers (Adv. Funct. Mater. 20/2008)

Authors

  • Kathleen M. Krause,

    1. Department of Electrical and Computer Engineering, University of Alberta Edmonton, AB T6G 2V4 (Canada)
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  • Michael J. Brett

    Corresponding author
    1. Department of Electrical and Computer Engineering, University of Alberta Edmonton, AB T6G 2V4 (Canada)
    2. National Research Council, National Institute for Nanotechnology Edmonton, AB T6G 2M9 (Canada)
    • Department of Electrical and Computer Engineering, University of Alberta Edmonton, AB T6G 2V4 (Canada).
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Abstract

original image

On p. 3111, Katie Krause and Michael Brett report the creation of a spatially graded nanohelix array, fabricated from transparent titanium dixode (TiO2), with optical properties that vary across its surface. This graded film interacts with circularly polarized light, reflecting back a rainbow of polarized light across the span of the structure. Applications for this structure include photonic devices, position sensors, and scaffolding to support liquid crystals.

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