Abstract
A considerable number of studies have focused on fabrication of hydrogel microstructures due to its wide applications in tissue engineering, drug delivery, and extracellular matrix construction. Here, we introduce a hydrogel printing method based on UV-induced projection via a digital micromirror device (DMD). Arbitrary microstructures could be fabricated within few seconds (<3) by modulating UV projection using DMD as digital dynamic masks instead of a physical mask, which also offers a high degree of flexibility and repeatability. Furthermore, the ability of PEGDA film to hinder cell adhesion makes it possible to control area over which cells attach.
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