Lee Yonghee, Lee Hyeok, Hwang Taesoon, Lee Jong-Gu, Cho Maenghyo
WCU Multiscale Mechanical Design Division, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 151-144, Korea.
Sci Rep. 2015 Nov 12;5:16544. doi: 10.1038/srep16544.
A pre-strained polystyrene (PS) polymer sheet is deformed when it approaches the glass transition state as a result of light absorption. By controlling the light absorption of the polymer sheet, non-contact sequential folding can be accomplished. Line patterns of different transparencies and shapes are used to control the light absorption. The line pattern shape is closely related to the folding angle and folding start time. The relation between the line pattern design and folding performance was evaluated experimentally to develop a technique for folding PS sheets. The results show that sequential folding of PS sheets can be accomplished by changing the degree of transparency of the line pattern. Using the technique developed in this study, self-folding origami structures with complicated shapes can be designed and manufactured.
预拉伸的聚苯乙烯(PS)聚合物片材在接近玻璃化转变状态时,由于光吸收而发生变形。通过控制聚合物片材的光吸收,可以实现非接触式连续折叠。使用不同透明度和形状的线条图案来控制光吸收。线条图案形状与折叠角度和折叠开始时间密切相关。通过实验评估了线条图案设计与折叠性能之间的关系,以开发一种折叠PS片材的技术。结果表明,通过改变线条图案的透明度,可以实现PS片材的连续折叠。利用本研究开发的技术,可以设计和制造具有复杂形状的自折叠折纸结构。