Persistent Identifier
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doi:10.11588/data/MR5H4A |
Publication Date
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2022-11-02 |
Title
| A Facile Approach for 4D Microprinting of Multi-Photoresponsive Actuators [data] |
Author
| Hsu, Li-Yun (Organic Chemistry Institute Heidelberg University, 69120 Heidelberg, Germany)
Mainik, Philipp (Organic Chemistry Institute Heidelberg University, 69120 Heidelberg, Germany)
Münchinger, Alexander (Institute of Applied Physics Karlsruhe Institute of Technology (KIT) 76128 Karlsruhe, Germany)
Lindenthal, Sebastian (Institute for Physical Chemistry, Heidelberg University 69120 Heidelberg, Germany)
Spratte, Tobias (Institute for Molecular Systems and Engineering and Advanced Materials (IMSEAM) Heidelberg University 69120 Heidelberg, Germany)
Welle, Alexander (Institute of Functional Interfaces (IFG) and Karlsruhe Nano Micro Facility (KNMFi) Karlsruhe Institute of Technology (KIT) 76344 Eggenstein-Leopoldshafen, Germany)
Zaumseil, Jana (Institute for Physical Chemistry Heidelberg University 69120 Heidelberg, Germany)
Selhuber-Unkel, Christine (Institute for Molecular Systems and Engineering and Advanced Materials (IMSEAM) Heidelberg University 69120 Heidelberg, Germany)
Wegener, Martin (Institute of Applied Physics Karlsruhe Institute of Technology (KIT) 76128 Karlsruhe, Germany)
Blasco, Eva (Organic Chemistry Institute Heidelberg University 69120 Heidelberg, Germany) |
Point of Contact
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Hsu, Li-Yun (Organic Chemistry Institute Heidelberg University 69120 Heidelberg, Germany) |
Description
| 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. (2022-08-23) |
Subject
| Chemistry |
Keyword
| stimuli responsive polymers
liquid crystal elastomers
two-photon laser printing
photo-switches
4D microprinting |
Related Publication
| A Facile Approach for 4D Microprinting of Multi-photoresponsive Actuators, L.-Y. Hsu, P. Mainik, A. Münchinger, S. Lindenthal, T. Spratte, A. Welle, J. Zaumseil, C. Selhuber-Unkel, M. Wegener, E. Blasco, Adv. Mater. Technol. 2022 doi: 10.1002/admt.202200801 https://doi.org/10.1002/admt.202200801 |
Language
| English |
Funding Information
| Deutsche Forschungsgemeinschaft (DFG) via the Excellence Cluster “3D Matter Made to Order”: EXC-2082/1-390761711
Carl Zeiss Foundation: Carl-Zeiss-Foundation-Focus@HEiKA |