Fluid Dynamics of the gas-liquid interface by controlling wettability of solid surface in water.

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To investigate wettability by using an electro wetting phenomenon in micro scale and generate the controllable interface fluctuation between gas phase and liquid phase, this study was performed. The basic knowledge has contributed to the principal to produce uniformly-sized micro bubbles in the micro scale. Then, in order to uniform the bubble size, the surface with reversibility of water contact angle was deigned. The procedure to make porous materials with high dielectric constant and several pore diameters were established.