Reversible low voltage electrowetting with SiO2 capillary window for optical imaging

This work reports the reversible low voltage electrowetting and liquid oscillation with SiO
₂
capillary window for optical imaging. The optical window with and without Grycerol liquid penetration into SiO
₂
capillaries has been demonstrated. The reversible electrowetting phenomenon has been achieved with low voltage supply of 8 V. The controlled liquid oscillation by pulse source has been observed. Additionally, the predicting response of switching speed between two states with and without liquid penetration into capillaries has been investigated by a fluidic numerical simulation.