Publish in OALib Journal
APC: Only $99
The deformation of droplet plays a significant role in influencing focus range and image quality of liquid controllable optical devices. According to Laplace Equation, the shape model of droplet is established based on the electro-wetting effect on dielectric. In this paper, the influence of gravity on the droplet deformation is taken into account. Using numerical calculation methods, the shape of static droplet and the deformation of droplet when external voltage is applied are deduced theoretically. Deformations of droplet which are applied with different voltages are compared. Theoretical analysis shows that the focal length of droplet changes from67.2 mmto infinity as solid phase is planar. As the solid phase is conical surface, the zoom range of droplet is related to the cone angle, and the transition from the negative lens to the positive lens can be realized.