Abstract

Two-photon polymerization (2PP) is a fabrication technique that allows the production of polymeric three-dimensional structures with a submicron resolution. It relies on non-linear two or multi-photon absorption of infrared photons in UV photopolymerizable materials, induced in the focus of a femtosecond pulsed laser beam, which triggers the photochemical polymerization reaction. By moving the beam focal spot with respect to the photoresist a complex polymeric structure can be fabricated. The unpolymerized resist is then removed with a development solution.

© 2015 IEEE