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Electrowetting actuated liquid prism with large steering angle based on additional gravitational effects
Author(s) -
Luo Lin,
Li Lei,
Wang JinHui,
Yuan RongYing,
Wang QiongHua
Publication year - 2018
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.673
Subject(s) - electrowetting , prism , beam steering , tilt (camera) , optics , materials science , beam (structure) , voltage , optoelectronics , dielectric , physics , mechanical engineering , engineering , quantum mechanics
In this paper, we propose a liquid prism based on electrowetting‐on‐dielectric and gravity effect. The device is filled with two immiscible liquids. The conductive liquid is filled in the upper part of the device, and the oil is filled in the bottom of the device. Different from the conventional liquid prism, the density of the conductive liquid is larger than that of the oil. The liquid–liquid interface can form a tilt shape when applied different voltages to the opposite sidewalls. The beam will be deflected when the light passes through the device. Our results show that the tilt angle of the liquid–liquid interface is ~45°, and the light beam can be deflected by 22.2° (−10.9° to +11.3°). The actuation time of the device is ~240 ms. The proposed liquid prism for light beam steering and tracking has potential application in laser directions, telecommunications, and scanners.