有機-無機ハイブリッド多孔体による光散乱制御 Control of Light Scattering in Organic-inorganic Hybrid Macroporous Monoliths

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著者

    • 平尾 崇行 HIRAO Takayuki
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University
    • 村井 俊介 MURAI Shunsuke
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University
    • 藤田 晃司 [他] FUJITA Koji
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University
    • 平尾 一之 HIRAO Kazuyuki
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University

抄録

The tuning of light scattering strength has been demonstrated for organic-inorganic hybrid monoliths with well-defined through-pores in micrometer range. Macroporous gels having interconnected pores and skeletons are obtained in a system containing methyltrimethoxysilane, water, nitric acid, and methanol using an alkoxy-derived sol-gel method combined with the phase separation. The sizes of pores and skeletons can be controlled by varying molar ratios of water and methanol in the starting compositions which mostly affect the onset of polymerization-induced phase separation in the system. The mercury porosimetry shows that the resultant gels have a sharp pore size distribution, and the average pore diameter increases with increasing the amount of water and methanol. The coherent backscattering measured for the gels formed in between two slide glasses reveals that the transport mean free path of light decreases with decreasing the sizes of pores and skeletons. Pore size dependence of the scattering strength can be qualitatively explained by a Mie scattering calculation using a model in which spherical pores are randomly distributed in methylsiloxane matrix. The results indicate that the scattering strength can be tuned by controlling the sizes of the pores.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 52(10), 781-785, 2005-10-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10018283505
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    7709815
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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