Direct‐Ink Written Shape‐Morphing Film with Rapid and Programmable Multimotion. Issue 2 (14th January 2020)

• Record Type: Journal Article
• Authors: Mao, Zhengyi; Zhu, Kunkun; Pan, Lulu; Liu, Guo; Tang, Tao; He, Yunhu; Huang, Jianpan; Hu, Jinlian; Chan, Kannie W. Y.; Lu, Jian
• Is Part Of: Advanced materials technologies. Volume 5:Issue 2(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-01-14
• Subjects: complex deformation -- fast actuation -- multimotion -- shape‐morphing actuator; Materials science -- Periodicals; Technological innovations -- Periodicals; Materials science; Technological innovations; Periodicals; 620.1105
• DOI: 10.1002/admt.201900974
• Languages: English
• ISSNs: 2365-709X

Abstract

Abstract: Shape‐morphing structures are appealing in the material community to inspire a myriad of applications across domains, including soft robots, tissue engineering, and consumer products. However, it is a challenge to create fast response/recovery actuators with complicated and robust deformation due to the slow diffusion speed of water in hydrogel and small modulus of hydrogel. Herein, a facile strategy is proposed to fabricate a versatile patterned film configuration using chitin and poly(dimethylsiloxane) (PDMS). The direct‐ink writing (DIW) technique is leveraged to build simple, flat, patterned films, which can be morphed into complicated multidimensional architectures. Additionally, computational simulations are conducted to predict the deformation behaviors of the actuator. The sequential response structure can be precisely manipulated by the actuation speed of different structures. Moreover, an assembling method is proposed to create multifunction actuators. Abstract : Designed PDMS stripe patterns are printed on the high elastic modulus chitin film by direct‐ink writing technique (DIW). Rapid and sequential deformation is obtained by adjusting fabrication parameters. An assembling method is used to crate multifunction actuators. This paper paves a new way to fabricate rapid, robust, and complex hydrophilic/hydrophobic shape‐morphing structures.