Campus Units

Materials Science and Engineering

Document Type

Article

Publication Version

Published Version

Publication Date

2018

Journal or Book Title

Scientific Reports

Volume

8

First Page

3378

DOI

10.1038/s41598-018-21479-7

Abstract

Inspired by the art of paper cutting, kirigami provides intriguing tools to create materials with unconventional mechanical and morphological responses. This behavior is appealing in multiple applications such as stretchable electronics and soft robotics and presents a tractable platform to study structure-property relationships in material systems. However, mechanical response is typically controlled through a single or fractal cut type patterned across an entire kirigami sheet, limiting deformation modes and tunability. Here we show how hybrid patterns of major and minor cuts creates new opportunities to introduce boundary conditions and non-prismatic beams to enable highly tunable mechanical responses. This hybrid approach reduces stiffness by a factor of ~30 while increasing ultimate strain by a factor of 2 (up to 750% strain) relative to single incision patterns. We present analytical models and generate general design criteria that is in excellent agreement with experimental data from nanoscopic to macroscopic systems. These hybrid kirigami materials create new opportunities for multifunctional materials and structures, which we demonstrate with stretchable kirigami conductors with nearly constant electrical resistance up to >400% strain and magnetoactive actuators with extremely rapid response (>10,000% strain s−1) and high, repeatable elongation (>300% strain).

Comments

This article is published as Hwang, D. G., & Bartlett, M. D. (2018). Tunable Mechanical Metamaterials through Hybrid Kirigami Structures. Scientific Reports, 8(1), 3378. DOI: 10.1038/s41598-018-21479-7.; Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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