Micropattern of Colloidal Crystal by Using Electrophoretic Deposition Process with Three-Electrode System

Abstract:

A novel micropatterning process for a particle assembly has been performed by using an electrophoretic deposition (EPD) method with a local electric field in a colloidal suspension generated by a three-electrode system. Monodisperse silica colloidal spheres with a diameter of 300 nm were used to fabricate micropattern of colloidal crystal. An interdigitated gold-microarray electrode with a 10 μm of width and a gold plate electrode were used as the working and the counter electrodes, respectively. After optimization of the EPD processing parameters, a micropattern was constructed from silica colloidal spheres. It had a relatively close-packed structure formed onto the interdigitated microarray electrode. This micropattern showed a characteristic optical reflectance peak due to Bragg’s law.

• Periodical: Key Engineering Materials (Volume 320)
• Pages: 171-174
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.320.171
• Online since: September 2006
• Authors: Jun Ichi Hamagami, Kazuhiro Hasegawa, Kiyoshi Kanamura
• Keywords: Colloidal Crystal, Electrophoretic Deposition Process, Micropattern, Monodisperse Silica Particles, Three-Electrode System

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