Abstract
Direct laser writing based (DLW) true 3D lithography (also known as two-photon polymerization (2PP)) is a technique offering unmatched flexibility in creating arbitrary shape free-form structures of various cross-linkable materials [1-4]. During the last decade it has covered application fields of photonics, microoptics, microfluidics, and biomedicine. Currently it is being implemented as a high-end 3D printer ensuring nanoscale resolution and wide material spectrum ranging from metals to proteins. Despite that, several photo-physical and photo-chemical mechanisms are intensively discussed and sometimes contradictory (see references for details [1-3]). The majority of the efforts was targeted towards improving structuring spatial resolution and novel materials. Up to date exists only a single report [4] related to polarization’s influence on DLW based photo-polymerization at nanoscale.
© 2015 IEEE
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