Multiscale integral synchronous assembly of cuttlebone-inspired structural materials by predesigned hydrogels

Huai-Bin Yang, Yi-Xing Lu, Xin Yue, Zhao-Xiang Liu, Wen-Bin Sun, Wen-Pei Zheng, Qing-Fang Guan () and Shu-Hong Yu ()
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Huai-Bin Yang: University of Science and Technology of China
Yi-Xing Lu: University of Science and Technology of China
Xin Yue: University of Science and Technology of China
Zhao-Xiang Liu: University of Science and Technology of China
Wen-Bin Sun: University of Science and Technology of China
Wen-Pei Zheng: University of Science and Technology of China
Qing-Fang Guan: University of Science and Technology of China
Shu-Hong Yu: University of Science and Technology of China

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract The overall structural integrity plays a vital role in the unique performance of living organisms, but the integral synchronous preparation of different multiscale architectures remains challenging. Inspired by the cuttlebone’s rigid cavity-wall structure with excellent energy absorption, we develop a robust hierarchical predesigned hydrogel assembly strategy to integrally synchronously assemble multiple organic and inorganic micro-nano building blocks to different structures. The two types of predesigned hydrogels, combined with hydrogen, covalent bonding, and electrostatic interactions, are layer-by-layer assembled into brick-and-mortar structures and close-packed rigid micro hollow structures in a cuttlebone-inspired structural material, respectively. The cuttlebone-inspired structural materials gain crack growth resistance, high strength, and energy absorption characteristics beyond typical energy-absorbing materials with similar densities. This hierarchical hydrogel integral synchronous assembly strategy is promising for the integrated fabrication guidance of bioinspired structural materials with multiple different micro-nano architectures.

Date: 2025
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DOI: 10.1038/s41467-024-55344-1

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