20 July 1999 Novel method to make three-dimensional arrangements of particles
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We propose a novel method to create various 3D arrangements of particles. In suspension such as an uncured polymer containing particles, the particles are aligned parallel to an imposed electric field, which are called particle chains, only on micro pillars of metal preformed at intended positions on a flat electrode due to an intensified electric field. The 2D arrangements of the 1D chains lead to the 3D arrangements of the particles. After the formation, the polymer is cured by heating in the electric field to stabilize the arrangements. According to this method, we succeed in making arrangements of glass beads with a diameter of 30 micrometers in silicone elastomer.
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Masashi Hase, Masashi Hase, Mitsuru Egashira, Mitsuru Egashira, Norio Shinya, Norio Shinya, "Novel method to make three-dimensional arrangements of particles", Proc. SPIE 3673, Smart Structures and Materials 1999: Smart Electronics and MEMS, (20 July 1999); doi: 10.1117/12.354258; https://doi.org/10.1117/12.354258

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