Abstract
In order to broaden the application range of liquid crystals, a new microfluidic drive and control method is proposed. Through a simulation model construction that links the plate motion and the liquid crystal backflow, we can study the coupling of the internal alignment and velocity fields of the liquid crystal in the model. On applying a continuous square wave electric field, the upper plate of the cell can be driven to move continuously, and the moving state can be related to the structure of the cell. When the gap between the two plates was 50 μm, the range of the change of tilt angle at the center of the cell was 6090°, and the induced backflow velocity profile was an S-shape. When the gap was 110 μm, because of the influence of the kickback effect, the range changed to 90100°, and the velocity profile was a double S-shape.
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