可変リンクルによる光透過-拡散のスイッチング  [in Japanese] Shape-Tunable Wrinkles for a Switchable Optical Diffuser  [in Japanese]

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Author(s)

    • 大園 拓哉 OHZONO Takuya
    • (独)産業技術総合研究所ナノシステム研究部門 Nanosystem Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST)
    • 鈴木 航祐 SUZUKI Kosuke
    • (独)産業技術総合研究所ナノシステム研究部門 Nanosystem Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST)
    • 山口 智彦 [他] YAMAGUCHI Tomohiko
    • (独)産業技術総合研究所ナノシステム研究部門 Nanosystem Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST)
    • 福田 伸子 FUKUDA Nobuko
    • (独)産業技術総合研究所フレキシブルエレクトロニクス研究センター Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST)

Abstract

高分子弾性体基板上に比較的硬い薄膜を均一に成膜し,側方圧縮応力を加えると,座屈不安定性を介し,表面がリンクルと呼ばれる規則的な凹凸構造を自己組織化する.さらにその凹凸形状は,圧縮ひずみ値によって制御できる特性を有する.この形状可変リンクルの光の透過・散乱特性について,その凹凸構造周期がサブミリメーター程度の場合で調べた.試料表面に垂直に入射された光は,ひずみ無印加の時はリンクル構造がないため,そのまま直進し,試料は透明板として振舞うのに対し,ひずみによって表面にサイン波状の凹凸構造が誘起されると,この曲面構造のために光は拡がり,散乱効果が得られる.よって,この柔軟な表面はスイッチング可能な光散乱板として応用が可能である.

Recently, spontaneously formed microwrinkles on hard coating-capped elastomer surfaces have attracted the attention of both the scientific and applied research communities, because of their simple fabrication process and potential for diverse practical applications. The depth and averaged orientation of the microwrinkle grooves can be controlled by applying strain. Here, we study the diffusion of light passed through a surface with wrinkles in the range of hundreds of microns. Without strain, the sample shows no wrinkles and is a transparent plate. With strain, the surface shows wrinkles and diffuses the light beam depending on the magnitude of applied strain. Thus, the present system can be used as a switchable optical diffuser.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 70(5), 179-184, 2013-05-25

    The Society of Polymer Science, Japan

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Codes

  • NII Article ID (NAID)
    10031174581
  • NII NACSIS-CAT ID (NCID)
    AN00085011
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03862186
  • NDL Article ID
    024676681
  • NDL Call No.
    Z17-92
  • Data Source
    CJP  NDL  J-STAGE 
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