Journal
ACS NANO
Volume 14, Issue 8, Pages 9832-9839Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c02481
Keywords
direct laser writing; two-photon polymerization; cholesteric liquid crystal networks; photonic photoresist; dynamic structural color; four-dimensional photonic microactuators
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Funding
- Netherlands Organisation for Scientific Research (NWO)
- Dutch Ministry of Economic Affairs and Climate Policy
- European Research Council (ERC) Starting Grant [802929-ChemLife]
- Science Foundation Ireland (SFI)
- European Regional Development Fund (ERDF) [12/RC/2278_P2]
- SFI
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With the advent of direct laser writing using two-photon polymerization, the generation of high-resolution three-dimensional microstructures has increased dramatically. However, the development of stimuli-responsive photoresists to create four-dimensional (4D) microstructures remains a challenge. Herein, we present a supramolecular cholesteric liquid crystalline photonic photoresist for the fabrication of 4D photonic microactuators, such as pillars, flowers, and butterflies, with submicron resolution. These micron-sized features display structural color and shape changes triggered by a variation of humidity or temperature. These findings serve as a roadmap for the design and creation of high-resolution 4D photonic microactuators.
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