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Microfluidic Fabrication of a PDMS Microlens for Imaging Tunability
Zhiguang Zhang1, Fuqiang Chu1, Xin Wang2
1Key Laboratory of Green Printing & Packaging Materials and Technology in Universities of Shandong, Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China.
Abstract:
A microfluidic system was created to fabricate polydimethylsiloxane (PDMS) microspheres, whose shape, surface smoothness, and size were controlled. Resulting from their excellent optical properties and elasticity prepared by the apparatus, each PDMS microsphere could act as a microlens and separate imaging unit. The focal length of the microlens was simply tuned by the forces posed on the beads. For the microlens array (MLA) application, it was constructed simply through the assembly of the monodisperse PDMS beads.
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