Liquid‐Crystal‐Elastomer‐Based Dissipative Structures by Digital Light Processing 3D Printing

Traugutt, Nicholas A.; Mistry, Devesh; Luo, Chaoqian; Yu, Kai; Ge, Qi; Yakacki, Christopher M.

doi:10.1002/adma.202000797

Liquid‐Crystal‐Elastomer‐Based Dissipative Structures by Digital Light Processing 3D Printing

Journal Article · Mon Jun 08 00:00:00 EDT 2020 · Advanced Materials

DOI:https://doi.org/10.1002/adma.202000797· OSTI ID:1632242

^[1]; ^[1]; Luo, Chaoqian ^[1]; ^[1]; ^[2]; ^[1]

University of Colorado Denver 1200 Larimer Street, Campus Box 112 Denver CO 80217 USA
Department of Mechanical and Energy Engineering Southern University of Science and Technology 1088 Xueyuan Avenue Shenzhen 518055 P. R. China

Abstract

Digital Light Processing (DLP) 3D printing enables the creation of hierarchical complex structures with specific micro‐ and macroscopic architectures that are impossible to achieve through traditional manufacturing methods. Here, this hierarchy is extended to the mesoscopic length scale for optimized devices that dissipate mechanical energy. A photocurable, thus DLP‐printable main‐chain liquid crystal elastomer (LCE) resin is reported and used to print a variety of complex, high‐resolution energy‐dissipative devices. Using compressive mechanical testing, the stress–strain responses of 3D‐printed LCE lattice structures are shown to have 12 times greater rate‐dependence and up to 27 times greater strain–energy dissipation compared to those printed from a commercially available photocurable elastomer resin. The reported behaviors of these structures provide further insight into the much‐overlooked energy‐dissipation properties of LCEs and can inspire the development of high‐energy‐absorbing device applications.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

Grant/Contract Number:: NA0003525

OSTI ID:: 1632242

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 28 Vol. 32; ISSN 0935-9648

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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