形状记忆聚合物
数字光处理
制作
材料科学
丙烯酸酯
形状记忆合金
聚合物
计算机科学
航空航天
维数(图论)
集合(抽象数据类型)
纳米技术
计算机图形学(图像)
3D打印
投影机
人工智能
工程类
复合材料
航空航天工程
单体
纯数学
替代医学
程序设计语言
病理
医学
数学
作者
Yongrong Shi,Guangqiang Fang,Zhengli Cao,Feizhou Shi,Qian Zhao,Zizheng Fang,Tao Xie
标识
DOI:10.1016/j.cej.2021.131306
摘要
Reversible shape memory polymers (SMPs) have received extensive attention because of their unique deformation mechanisms and diverse shape-changing behaviors. However, the traditional methods of fabricating reversible SMPs usually result in the limitation of the accessible shapes and the corresponding shape-shifting behaviors. Herein, a reversible SMP with two crystalline phases is digital light-cured via thiol-acrylate chemistry with the assist of a digital light processing (DLP) technology. Thus, a set of special geometric patterns can be obtained by digitally defined exposure regions with a specified time, allowing the achievement of the 3D kirigami or origami reversible actuation. In addition, this strategy can be extended to the emerging advanced 3D or 4D printing technologies by introducing z-axis dimension or time gradient, facilitating the fabrication of sophisticated reprogrammable reversible shape memory devices, including 4D printed grabber and 3D printed movable cartoon character. Our approach based on DLP enables the rapid and precise manipulation of shape-changing materials, which can extend the possibilities for future development in aerospace and other potential applications.
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