Hybrid epoxy–acrylate resins for wavelength-selective multimaterial 3D printing

IF 38.5 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nature Materials Pub Date : 2025-06-30 DOI:10.1038/s41563-025-02249-z

Ji-Won Kim, Marshall J. Allen, Elizabeth A. Recker, Lynn M. Stevens, Henry L. Cater, Ain Uddin, Ang Gao, Wyatt Eckstrom, Anthony J. Arrowood, Gabriel E. Sanoja, Michael A. Cullinan, Benny D. Freeman, Zachariah A. Page

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引用次数: 0

Abstract

Structures in nature combine hard and soft materials in precise three-dimensional (3D) arrangements, imbuing bulk properties and functionalities that remain elusive to mimic synthetically. However, the potential for biomimetic analogues to seamlessly interface hard materials with soft interfaces has driven the demand for innovative chemistries and manufacturing approaches. Here, we report a liquid resin for rapid, high-resolution digital light processing (DLP) 3D printing of multimaterial objects with an unprecedented combination of strength, elasticity and resistance to ageing. A covalently bound hybrid epoxy–acrylate monomer precludes plasticization of soft domains, while a wavelength-selective photosensitizer accelerates cationic curing of hard domains. Using dual projection for multicolour DLP 3D printing, bioinspired metamaterial structures are fabricated, including hard springs embedded in a soft cylinder to adjust compressive behaviour and a detailed knee joint featuring ‘bones’ and ‘ligaments’ for smooth motion. Finally, a proof-of-concept device demonstrates selective stretching for electronics. A hybrid epoxy–acrylate resin is reported for the digital light processing 3D printing of bioinspired metamaterial structures with precisely patterned hard and soft domains.

Abstract Image

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用于波长选择性多材料3D打印的环氧-丙烯酸酯复合树脂

自然界中的结构以精确的三维（3D）排列将硬材料和软材料结合在一起，赋予了难以模仿的整体特性和功能。然而，仿生类似物将硬材料与软材料无缝连接的潜力推动了对创新化学和制造方法的需求。在这里，我们报告了一种液体树脂，用于快速，高分辨率数字光处理（DLP） 3D打印多材料物体，具有前所未有的强度，弹性和抗老化性。共价结合的杂化环氧-丙烯酸酯单体阻碍了软畴的塑化，而波长选择性光敏剂加速了硬畴的阳离子固化。使用双投影进行多色DLP 3D打印，制造了仿生超材料结构，包括嵌入软圆柱体中的硬弹簧，以调整压缩行为，以及具有“骨骼”和“韧带”的详细膝关节，以实现平滑运动。最后，一个概念验证装置演示了电子产品的选择性拉伸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Materials 工程技术-材料科学：综合

CiteScore

62.20

自引率

0.70%

发文量

221

审稿时长

3.2 months

期刊介绍： Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. It covers all applied and fundamental aspects of the synthesis/processing, structure/composition, properties, and performance of materials. The journal recognizes that materials research has an increasing impact on classical disciplines such as physics, chemistry, and biology. Additionally, Nature Materials provides a forum for the development of a common identity among materials scientists and encourages interdisciplinary collaboration. It takes an integrated and balanced approach to all areas of materials research, fostering the exchange of ideas between scientists involved in different disciplines. Nature Materials is an invaluable resource for scientists in academia and industry who are active in discovering and developing materials and materials-related concepts. It offers engaging and informative papers of exceptional significance and quality, with the aim of influencing the development of society in the future.