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Transient analysis of fluid-membrane interaction of multi-fluid-entrances liquid lens

The purpose of this study is to analyze the transient fluid-membrane interaction phenomenon of a micro liquid lens with the multi-fluid entrances (single and two). To understand the behavior of the lens, finite element analysis is used. Based on the results of transient analysis, the focal length of single and two entrances liquid lens is almost the same, but the two entrances design can stabilize quickly. This characteristic can shorten the response time when the liquid lens is used in high-speed focus variation system such as optical communications in micro optical electro mechanical system (MOEMS). The transient deformation measurement system of micro lens transient is not easy to be achieved; a measurement system for a 20mm diameter liquid filled lens prototype is indicated and tested for the formation of image. For the finite element analysis, finite element models constructed by the ANSYS Fluid Structure Interaction (FSI) module are employed to find the transient fluid-membrane interaction phenomenon.