Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 38, Issue 13, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201600625
Keywords
active structures; polymer films; origami; photopolymerization; self-folding
Categories
Funding
- NSF [CMMI-1462894, CMMI-1462895, EFRI-1435452]
- AFOSR [15RT0885]
- Chinese Scholarship Council [201506010219]
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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.
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