Electroactive polymers based on poly (vinyl chloride) (PVC) gels are good candidates for the fabrication of microlens arrays (MLAs). In this study, the influences of electrode structures on the morphologies of PVC gels-based MLAs were studied. The diameters of inner zones in ring-array-patterned electrodes were set to 50 μm, 150 μm, 200 μm, and 250 μm. Each inner zone was connected to the anode, and the outer zones were connected to the cathode. After solvent evaporation from PVC gels solution under DC electric field, PVC gels accumulated on the inner zones by electrostatic forces. At constant volume of PVC gels solution (100 μL) and fixed applied voltage (50 V), the PVC gels formed either convex shape (d = 50 μm) or platform (d = 100 μm, 200 μm, and 250 μm) depending on sizes of the inner zones. By optimizing the process parameters, PVC gels-based MLAs with different apertures (d = 50 μm, 100 μm, 150 μm, 200 μm, and 250 μm) and fill factors (46.2%) were successfully fabricated. The imaging properties, focusing effects, and morphologies of the as-prepared PVC gels-based MLAs were all evaluated. In sum, the proposed methodology provided a theoretical basis for the design and fabrication of electrode structures and PVC gels-based MLAs with initial focal length.

基于聚（氯乙烯）（PVC）凝胶的电活性聚合物是制造微透镜阵列（MLA）的良好候选材料。在本研究中，研究了电极结构对 PVC 凝胶基 MLA 形貌的影响。环形阵列图案电极中的内部区域的直径设置为 50 μm、150 μm、200 μm 和 250 μm。每个内区连接到阳极，外区连接到阴极。在直流电场下溶剂从 PVC 凝胶溶液中蒸发后，PVC 凝胶通过静电力聚集在内部区域。在恒定体积的 PVC 凝胶溶液 (100 μL) 和固定外加电压 (50 V) 下，PVC 凝胶形成凸形 (d = 50 μm) 或平台 (d = 100 μm、200 μm 和 250 μm)，具体取决于内部区域的大小。通过优化工艺参数，成功制造了具有不同孔径（d = 50 μm、100 μm、150 μm、200 μm 和 250 μm）和填充因子（46.2%）的基于 PVC 凝胶的 MLA。对所制备的基于 PVC 凝胶的 MLA 的成像特性、聚焦效果和形态进行了评估。总之，所提出的方法为具有初始焦距的电极结构和基于 PVC 凝胶的 MLA 的设计和制造提供了理论基础。