Ren Hongwen, Ren Daqiu, Wu Shin-Tson
Department of Polymer Nano-Science and Engineering, Chonbuk National University, Chonju, Chonbuk, 561-756, Republic of South Korea.
Opt Express. 2009 Dec 21;17(26):24183-8. doi: 10.1364/OE.17.024183.
Conventional liquid microlens arrays are facing bottlenecks in controlling droplet size and shape, and limited aperture ratio. We report a new liquid/solvent approach to overcome these obstacles for making uniform droplet array and achieving approximately 90% aperture ratio. The droplets are very stable due to the pinning effect of the polymer walls and substrate surfaces. Using the fabricated droplet array, we demonstrate a tunable-focus microlens array based on dielectrophoretic effect. The microlens array exhibits a large dynamic range and fast response time (tens of milliseconds). Besides liquid microlens arrays, this fabrication method also opens a new door for making other tunable photonic devices.
传统的液体微透镜阵列在控制液滴大小和形状以及有限的孔径比方面面临瓶颈。我们报道了一种新的液体/溶剂方法来克服这些障碍，以制造均匀的液滴阵列并实现约90%的孔径比。由于聚合物壁和基底表面的钉扎效应，液滴非常稳定。利用制造的液滴阵列，我们展示了一种基于介电泳效应的可调焦微透镜阵列。该微透镜阵列具有大动态范围和快速响应时间（几十毫秒）。除了液体微透镜阵列，这种制造方法还为制造其他可调谐光子器件打开了一扇新的大门。
