3D polycatenated architected materials

• 成果类型: Article
• 署名作者: Zhou, Wenjie; Nadarajah, Sujeeka; Li, Liuchi; Izard, Anna Guell; Yan, Hujie; Prachet, Aashutosh K.; Patel, Payal; Xia, Xiaoxing; Daraio, Chiara
• 署名单位: California Institute of Technology; Princeton University; Johns Hopkins University; United States Department of Energy (DOE); Lawrence Livermore National Laboratory
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-13595
• DOI: 10.1126/science.adr9713
• 发表日期: 2025-01-17
• 页码: 269-277
• 关键词: mechanical-properties; shape; metamaterials

摘要

Architected materials derive their properties from the geometric arrangement of their internal structural elements. Their designs rely on continuous networks of members to control the global mechanical behavior of the bulk. In this study, we introduce a class of materials that consist of discrete concatenated rings or cage particles interlocked in three-dimensional networks, forming polycatenated architected materials (PAMs). We propose a general design framework that translates arbitrary crystalline networks into particle concatenations and geometries. In response to small external loads, PAMs behave like non-Newtonian fluids, showing both shear-thinning and shear-thickening responses, which can be controlled by their catenation topologies. At larger strains, PAMs behave like lattices and foams, with a nonlinear stress-strain relation. At microscale, we demonstrate that PAMs can change their shapes in response to applied electrostatic charges. The distinctive properties of PAMs pave the path for developing stimuli-responsive materials, energy-absorbing systems, and morphing architectures.