Colloidal Crystallization by Centrifugation

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  • SUZUKI Yoshihisa
    Department of Life System, Institute of Technology and Science, The University of Tokushima
  • SAWADA Tsutomu
    Optronic Materials Center, National Institute for Materials Science
  • MORI Atsushi
    Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima
  • TAMURA Katsuhiro
    Department of Life System, Institute of Technology and Science, The University of Tokushima

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Other Title
  • 遠心沈降法を用いたコロイド結晶の作製
  • エンシン チンコウホウ オ モチイタ コロイド ケッショウ ノ サクセイ

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Abstract

Columnar-shaped colloidal crystals (width and length of the columns —0.1-1.0 mm and 10 mm, respectively) have been grown by centrifugation of the dispersion of polystyrene particles. The crystals were re-dispersed reversibly. Close-packed colloidal crystals were obtained by drying the columnar crystals gently. The dried crystals contained no macroscopic cracks over several mm3. Some stacking disorders were observed on the cross sections of the dried crystals. The average grain size of the columnar crystals increased with decreasing centrifugal acceleration. Too fast centrifugation caused the sedimentation of randomly oriented small grains in front of the growth interfaces.<br>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 64 (3), 161-165, 2007

    The Society of Polymer Science, Japan

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