Fabricating Microlens Arrays by Surface Wrinkling


  • The authors thank Steve Koback, Amy McClung, and Justin Turner of Zygo Corporation for assistance and use of their optical profiler in the characterization of the compound lens structures. We thank Andrew Smith for assisting in optical characterization of the microlens arrays and Jong-Young Lee for help with atomic force microscopy measurements. We also acknowledge NSF-MRSEC Central Facilities for use of their scanning electron microscope. Funding for this work is provided by NSF CAREER Award DMR-0349078 and 3M Non-tenured Faculty Research Award.


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A new approach to fabricating microlens arrays (see figure and cover) based on the confinement of surface wrinkles on a soft polymer surface is presented. The dimensions and the arrangement of the microlenses are controlled by the degree of lateral confinement and the material properties of the wrinkled regions. This approach allows for the nonplanar patterning of a polymer surface with a microlens array to form a biomimetic compound lens.