Maskless Lithography and 3D Printing through photochemical C,H Insertion Crosslinking

Conference: MikroSystemTechnik Kongress 2021 - Kongress
11/08/2021 - 11/10/2021 at Stuttgart-Ludwigsburg, Deutschland

Proceedings: MikroSystemTechnik Kongress 2021

Pages: 3Language: englishTyp: PDF

Song, Dan; Rapp, Bastian E.; Rühe, Juergen (Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany & Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Freiburg, Germany)
Kotz-Helmer, Frederik (Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany)

With photocurable resins, the fabrication of microstructures has increasingly attracted interest in both industrial and scientific fields. We introduce a new material system for digital light processing (DLP) microstructuring which is based on pre-polymers allowing the local and light-induced C,H-insertion crosslinking (CHic). Compared to conventional polymeric photo-resins, such a material system avoids the use of any low molecular weight components, rendering the fabricated microstructures biologically safe and suitable for medical applications. Using this approach, microstructures with freely definable surface features can be fabricated easily.