Tailoring Photonic Strength in Monolithic Macroporous Silica for Random Media
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概要
- 論文の詳細を見る
A systematic method of tuning the photonic strength of disordered dielectric media has been demonstrated in monolithic silica (SiO2) with interconnected macropores prepared by the sol–gel method. Macroporous SiO2 gels are obtained in a system containing tetramethoxysilane, poly(ethylene glycol) (PEG), acetic acid, and water. The macroporous structure is formed when the transient structure of phase separation developed during the hydrolysis and polycondensation of alkoxysilane is chemically frozen-in by the sol–gel transition. The sizes of pores and skeletons, which are determined by the relative rate of phase separation to that of the sol–gel transition, can be controlled by the PEG content. The coherent backscattering measurement, together with the theoretical calculation based on the independent scattering approximation, reveals that the transport mean free path of light in the porous SiO2 can be tuned by adjusting the density and size of the pores.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-08-15
著者
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Hirao Kazuyuki
Department Of Material Chemistry Graduate School Of Engineering Kyoto University
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Murai Shunsuke
Department Of Cardiovascular Medicine Gifu Pref. Govt. Tajimi Hospital
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Fujita Koji
Department Of Applied Science For Integrated System Engineering Graduate School Of Engineering Kyush
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Nakanishi Kazuki
Department Of Chemistry Graduate School Of Science Kyoto University
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Murai Shunsuke
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Hirao Kazuyuki
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Nakanishi Kazuki
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Fujita Koji
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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