Compliant rolling-contact architected materials for shape reconfigurability

Journal Article · 01 November 2018 · Nature Communications

DOI: https://doi.org/10.1038/s41467-018-07073-5 · OSTI ID:1624122

Shaw, Lucas A. ^[1]; Chizari, Samira ^[2]; Dotson, Matthew  ^[2]; Song, Yuanping  ^[2]; Hopkins, Jonathan B.  ^[2]

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1. Univ. of California, Los Angeles, CA (United States). Mechanical and Aerospace Engineering; DOE/OSTI
2. Univ. of California, Los Angeles, CA (United States). Mechanical and Aerospace Engineering

Architected materials can achieve impressive shape-changing capabilities according to how their microarchitecture is engineered. Here we introduce an approach for dramatically advancing such capabilities by utilizing wrapped flexure straps to guide the rolling motions of tightly packed micro-cams that constitute the material’s microarchitecture. This approach enables high shape-morphing versatility and extreme ranges of deformation without accruing appreciable increases in strain energy or internal stress. Two-dimensional and three dimensional macroscale prototypes are demonstrated, and the analytical theory necessary to design the proposed materials is provided and packaged as a software tool. An approach that combines two-photon stereolithography and scanning holographic optical tweezers is demonstrated to enable the fabrication of the proposed materials at their intended microscale.

• Research Organization: Univ. of California, Los Angeles, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
• Grant/Contract Number: FG02-00ER41132
• OSTI ID: 1624122
• Journal Information: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 9; ISSN 2041-1723
• Publisher: Nature Publishing GroupCopyright Statement
• Country of Publication: United States
• Language: English