Instability Phenomenon in Dip-Coating Process for Self-Assembly of Fine Particles and Design Countermeasures
Manabu Nishio, Nobuyuki Moronuki, and Arata Kaneko
Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo 181-0065, Japan
The self-assembly of fine particles is a promising process for the production of nano-structures. In this process, aqueous suspension is often used. The spreading of the suspension on the substrate is a complex phenomenon that sometimes causes problems of instability. This paper discusses the instability phenomenon and proposes countermeasures from various aspects. It was found that special attention should be paid to the pattern design of site-selective assembly. Finally, complex structures made of particles of different sizes and materials are shown to demonstrate the improved stability after repeated dip-coating.
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