Abstract
In this paper, we report a prism with two liquid–liquid interfaces based on electrowetting effect. The prism is filled with two immiscible liquids which form two liquid–liquid interfaces. In the device, the filling liquids from the top to the bottom are conductive liquid, oil and conductive liquid. The shape of the two liquid–liquid interfaces will be changed when different voltages are applied to the opposite sidewalls. Our device is capable of wide-angle beam steering and the function of light beam translational. Our results show that the light beam can be deflected by ∼22.3° (−11.5° to +10.8°) and the translational distance is 3.1 mm (−1.5 mm to +1.6 mm). The proposed prism has a wide application in light detection, telecommunications, light alignment and other industrial applications.
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