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5 March 2021 3D two-photon printing of hetero-microstructures by in-situ alignment of liquid-crystal elastomers
Alexander Münchinger, Eva Blasco, Vincent Hahn, Dominik Beutel, Simon Woska, Joël Monti, Carsten Rockstuhl, Martin Wegener
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Proceedings Volume 11677, Laser 3D Manufacturing VIII; 116770I (2021) https://doi.org/10.1117/12.2578120
Event: SPIE LASE, 2021, Online Only
Abstract
We present a novel two-photon 3D printing approach based on a dedicated resist chamber in which we apply a quasi-static electric field with variable orientation and amplitude during the 3D printing process. This allows aligning the director of not yet polymerized liquid-crystal elastomer resist. After two-photon exposure, the alignment is “frozen” in the polymerized voxel. For the next voxel, the electric field vector can be changed, etc. In this manner, we can 3D print hetero-microstructures of liquid-crystal elastomers. We envision applications under ambient conditions where mechanical actuation is induced by temperature variation or by focused light.
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Alexander Münchinger, Eva Blasco, Vincent Hahn, Dominik Beutel, Simon Woska, Joël Monti, Carsten Rockstuhl, and Martin Wegener "3D two-photon printing of hetero-microstructures by in-situ alignment of liquid-crystal elastomers", Proc. SPIE 11677, Laser 3D Manufacturing VIII, 116770I (5 March 2021); https://doi.org/10.1117/12.2578120
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KEYWORDS
3D printing
Liquid crystals
Printing
Polymers
Microscopes
Nanostructures
Objectives
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