Zhao Zeang, Wu Jiangtao, Mu Xiaoming, Chen Haosen, Qi H Jerry, Fang Daining
The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
College of Engineering, Peking University, Beijing, 100871, P. R. China.
Macromol Rapid Commun. 2017 Jul;38(13). doi: 10.1002/marc.201600625. Epub 2016 Dec 22.
Self-folding origami is of great interest in current research on functional materials and structures, but there is still a challenge to develop a simple method to create freestanding, reversible, and complex origami structures. This communication provides a feasible solution to this challenge by developing a method based on the digit light processing technique and desolvation-induced self-folding. In this new method, flat polymer sheets can be cured by a light field from a commercial projector with varying intensity, and the self-folding process is triggered by desolvation in water. Folded origami structures can be recovered once immersed in the swelling medium. The self-folding process is investigated both experimentally and theoretically. Diverse 3D origami shapes are demonstrated. This method can be used for responsive actuators and the fabrication of 3D electronic devices.
自折叠折纸在当前功能材料和结构的研究中备受关注，但开发一种创建独立、可逆且复杂折纸结构的简单方法仍面临挑战。本通讯通过开发一种基于数字光处理技术和去溶剂化诱导自折叠的方法，为这一挑战提供了可行的解决方案。在这种新方法中，扁平聚合物片材可以通过商用投影仪发出的强度可变的光场进行固化，自折叠过程由在水中的去溶剂化触发。一旦浸入膨胀介质中，折叠的折纸结构就能恢复。对自折叠过程进行了实验和理论研究。展示了各种三维折纸形状。该方法可用于响应式致动器和三维电子器件的制造。
