A bio-inspired 3D metamaterials with chirality and anti-chirality topology fabricated by 4D printing

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2022-09-14 DOI:10.1080/19475411.2022.2120110

Wei Zhao, Jie Zhu, Liwu Liu, J. Leng, Yanju Liu

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引用次数: 3

Abstract

ABSTRACT Artificial architected metamaterials equipped with unique mechanical and physical properties that are naturally inaccessible can be obtained by rational design. In this work, the innovative three-dimensional (3D) chiral and anti-chiral metamaterials are developed referring to the face-rotating polyhedral (FRP) structure present in the virus. Through assembling planar triangular units into the regular octahedron cells, several typical forms of chiral and anti-chiral metamaterials can be obtained by different assembly methods. By changing the topology parameters, the Poisson’s ratio can be adjusted between [0, 2.8]. The metamaterials are fabricated by 3D printing utilizing shape memory polymer, and the mechanical properties are analyzed via Finite Element Analysis (FEA) and experiments, including Young’s modulus, Poisson’s ratio, and tension-twist coupling behavior. In addition, target metamaterial with specific local deformation behavior is obtained by programmatic calculations and distributions to meet special requirements or achieve unique applications. The shape memory property endows the mechanical metamaterials with more potential applications. GRAPHICAL ABSTRACT

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采用4D打印技术制备具有手性和反手性拓扑结构的仿生三维超材料

摘要：通过合理的设计，可以获得具有天然无法获得的独特机械和物理性能的人工建筑超材料。在这项工作中，参考病毒中存在的面旋转多面体（FRP）结构，开发了创新的三维（3D）手性和反手性超材料。通过将平面三角形单元组装到正八面体单元中，可以通过不同的组装方法获得几种典型形式的手性和反手性超材料。通过改变拓扑参数，泊松比可以在[0，2.8]之间调整。超材料是利用形状记忆聚合物通过3D打印制造的，并通过有限元分析（FEA）和实验分析其力学性能，包括杨氏模量、泊松比和拉伸-扭转耦合行为。此外，通过程序计算和分布获得具有特定局部变形行为的目标超材料，以满足特殊要求或实现独特应用。形状记忆特性赋予了机械超材料更多潜在的应用。图形摘要

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.