A Facile Approach for 4D Microprinting of Multi-Photoresponsive Actuators [data]

DOI

For microscale 4D photoresponsive actuators, light is crucial in two ways. First, the underlying additive manufacturing techniques rely on photopolymerization processes triggered by the absorption of light. Second, the absorption of light serves as the actuation stimulus. The two absorptions can be conflicting. While the microstructure requires strong absorption at the actuation wavelength(s), this absorption should not interfere with that of the manufacturing process. Herein, we propose a simple strategy to overcome these limitations and allow for the fabrication of multi-photoresponsive 3D microstructures that can be actuated at different wavelengths of light. Two-photon 3D laser printing is selected as the fabrication technique and liquid crystalline (LC) elastomers as the functional materials. In a first step, 3D microstructures are fabricated using an aligned LC ink formulation. Thereafter, up to five different dyes exhibiting absorptions that extend over the entire visible regime (400 - 700 nm) are successfully incorporated into the LC microstructures by an exchange process enabling a programmable actuation by irradiating with the suitable wavelength. Furthermore, by combining dyes exhibiting orthogonal absorptions, wavelength-selective actuations are demonstrated.

Identifier
DOI https://doi.org/10.11588/data/MR5H4A
Related Identifier https://doi.org/10.1002/admt.202200801
Metadata Access https://heidata.uni-heidelberg.de/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=doi:10.11588/data/MR5H4A
Provenance
Creator Hsu, Li-Yun; Mainik, Philipp; Münchinger, Alexander; Lindenthal, Sebastian; Spratte, Tobias; Welle, Alexander; Zaumseil, Jana; Selhuber-Unkel, Christine; Wegener, Martin; Blasco, Eva
Publisher heiDATA
Contributor Hsu, Li-Yun
Publication Year 2022
Funding Reference Deutsche Forschungsgemeinschaft (DFG) via the Excellence Cluster “3D Matter Made to Order” EXC-2082/1-390761711 ; Carl Zeiss Foundation Carl-Zeiss-Foundation-Focus@HEiKA
Rights CC BY 4.0; info:eu-repo/semantics/openAccess; http://creativecommons.org/licenses/by/4.0
OpenAccess true
Contact Hsu, Li-Yun (Organic Chemistry Institute Heidelberg University 69120 Heidelberg, Germany)
Representation
Resource Type Dataset
Format application/zip
Size 134809000
Version 1.0
Discipline Chemistry; Natural Sciences