中文摘要：

利用模板法与热压技术相结合提出了一种基于胶体晶体的大面积二维微透镜阵列的快速制备方法。采用改进的自组织方法获得了大面积的二维六角密堆胶体微球阵列,以此为模板通过热压印将表面形貌转移到聚碳酸酯（PC）表面形成微凹透镜阵列;然后以PC微凹透镜阵列为二次模板,再通过热压印制得聚甲基丙烯酸甲酯（PMMA）的微凸透镜阵列。结果表明,采用不同尺寸的胶体微球以及调节模板制备过程中退火时间可调控所得微透镜的尺寸及形状;所得的PC微凹透镜及PMMA微凸透镜具有较好的成像效果。这一技术为微透镜阵列的制备提供了新的途径。

英文摘要：

A simple and efficient templating method have been developed for fabricating large-area two-dimensional （2D） microlens arrays （MLAs）. By utilizing a modified microchannel method, a 2D large-area hexagonal close-packed （HCP） array of silica colloidal microspheres was prepared and serveed as a template in the following hot embossing treatment to create a polycarbonate （PC） microcavity array. Then, with the obtained PC microcavity structure serving as a mold, a hot embossing process was applied to finally achieve a polymethylmethacrylate （PMMA） MLA. The results showed that, the dimension and shape of the microlens can be tuned by the colloidal sphere sizes and the mold preparation annealing time. Both PC concave microcavities and PMMA convex microlenses showed good imaging performances. Such technique may provide a new avenue for fabrication ofmicrolens arrays.