Direct Ink Writing of 4D Structural Colors

Jeroen A. H. P. Sol; Luc G. Smits; Albert P. H. J. SchenningMichael G. Debije

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Direct Ink Writing of 4D Structural Colors

机译：Direct Ink Writing of 4D Structural Colors

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Additive manufacturing with stimuli-responsive materials—4D printing—isa rapidly growing field, with direct ink writing allowing deposition of awide variety of materials. The synthesis of a humidity-sensitive cholestericliquid crystal oligomer ink is reported. With the responsive cholesteric ink,demonstrator devices exhibiting the ink’s “four dimensionality” are printedin disparate fashions: as a structural color change or as a preprogrammeddeformation mode. After printing, the photonic ink changes color in responseto atmospheric humidity, demonstrated as a hydrochromic coating preciselydeposited atop a 3D-printed beetle. After activation in aqueous acid, thebeetle exhibits vibrant color shifts across the visible spectrum. Alternatively, ascallop-inspired actuator with a 3D-programmed structural color is selectivelytreated with acid, to allow reversible “opening” and “closing” when exposedto humid and dry air, respectively. The ink enables additive manufacturingof both monolithic and multimaterial stimuli-responsive, shape-changing,structurally colored objects, toward broad application of cholesterics in future“smart,” 4D structurally colored devices.

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《Advanced functional materials》 |2022年第30期|2201766.1-2201766.11|共11页
作者
Jeroen A. H. P. Sol; Luc G. Smits; Albert P. H. J. SchenningMichael G. Debije;
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作者单位

Stimuli-Responsive Functional Materials and Devices (SFD)Department of Chemical Engineering and ChemistryEindhoven University of Technology (TU/e)Groene Loper 3, 5612 AE Eindhoven, The Netherlands;

Stimuli-Responsive Functional Materials and Devices (SFD)Department of Chemical Engineering and ChemistryEindhoven University of Technology (TU/e)Groene Loper 3, 5612 AE Eindhoven, The Netherlands,Institute for Complex Molecular Systems (ICMS)Eindhoven Un;

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原文格式 PDF
正文语种英语
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actuators; additive manufacturing; bioinspired; humidity responsive; liquid crystals; multimaterial printing; responsive optics;

Direct Ink Writing of 4D Structural Colors

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