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Stepwise assembly in three dimensions: Preparation and characterization of layered gold nanoparticles in porous silica matrices

Authors

  • Dr. Hongyou Fan,

    1. Center for Micro-Engineered Materials, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
    2. Department of Chemical and Nuclear Engineering, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
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  • Dr. Yuqing Zhou,

    1. Center for Micro-Engineered Materials, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
    2. Department of Chemical and Nuclear Engineering, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
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  • Prof. Gabriel P. Lopez

    Corresponding author
    1. Center for Micro-Engineered Materials, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
    2. Department of Chemical and Nuclear Engineering, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
    • Center for Micro-Engineered Materials, 209 Farris Engineering Center The University of New Mexico Albuquerque, NM 87131 (USA)
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  • We are very grateful for the financial support from the UNM/NSF Center for Micro-Engineered Materials, NSF(CTS-9624841), NASA (NAG10-0160), ONR (N00014-95-1-0901). Dr. W. Gong, Y. Guo, Rajesh Vaidya are acknowledged for fruitful discussions and technical assistance. Transmission electron microscopy was performed at the Department of Geology, The University of New Mexico.

Abstract

Arrays of metal nanoparticles with well-defined two- or three-dimensional ordered structures in a solid matrix have many potential applications, e.g., novel optical gratings, data-storage systems, and microelectronics. A synthetic method is described for preparing multilayer composite thin films with metal nanoparticles in porous ceramic matrices through colloidal adsorption and sol-gel processing. Techniques for the control of the interparticulate distance, the number of particles in each layer, the interlayer distance, and the pore structure are outlined.

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