將高分子金屬複合物之薄膜應用於光學變焦驅動

Abstract

離子聚合物金屬複合材料為一種電制動高分子，對電氣刺激有極高的響應，由於其具有驅動電壓低和體積小等優點而被作為制動器應用於許多光機電系統。當施予電壓時，離子聚合物金屬複合材料會因為內部離子遷移而被制動。在本文中我們發展了新製作的銀電極離子聚合物金屬複合材料。與傳統鉑電極離子聚合物金屬複合材料相比，表現電阻下降90%，而且反應速度提升兩倍，驅動電壓下降20%。本文中我們應用優化的銀電極離子聚合物金屬複合材料作為驅動器驅動微透鏡陣列。而我們所使用的微透鏡陣列僅0.1克重，曲率半徑0.26釐米，焦長577微米。同時我們利用三維列印機來製作焦率調變的模組以及彈簧穩定系統，並與離子聚合物金屬複合材料以及微透鏡陣列整合。我們也使用ANSYS Workbench模擬彈簧系統的效用，並成功的利用2.5伏特驅動離子聚合物金屬複合材料在1秒內將鏡頭組移動200微米，此外其共振頻率大約是500赫茲。

IPMC (Ionic Polymer Metallic Composite) is a kind of electroactive polymer (EAP) which can be used as an actuator due to its low driving voltage, light weight and small volume. In this paper, the Ag-IPMC with complex fabrication method can be further developed which enhance the performance of IPMC. Compared with traditional Pt-IPMC, the surface resistance of Ag-IPMC dropped 90%. Furthermore, optimized Ag-IPMC not only enhances the response speed by two times, but also decreased the driving voltage by 20%. We applied the optimized Ag-IPMC as the lens actuator for curvilinear microlens array. It weighs 0.1g and the radius of curvature of microlens is 0.26 mm with focal length of 577 μm. We used the 3D printer to make a module and spring stable system combined with Ag-IPMC and microlens array. We also used modeling software, ANSYS Workbench, to confirm the effect of spring system. Finally, we successfully drive the lens system in 200 μm stroke under 2.5V driving voltage within 0.7 second, and the resonant frequency is approximately 500 Hz.