标题: Electrical Writing to Three-Dimensional Pattern Dynamic Polysaccharide Hydrogel for Programmable Shape Deformation

作者: Zhu, XY (Zhu, Xinyi); Wu, S (Wu, Si); Yang, C (Yang, Chen); Deng, HB (Deng, Hongbing); Du, YM (Du, Yumin); Shi, XW (Shi, Xiaowen)

来源出版物: MACROMOLECULAR RAPID COMMUNICATIONS 文献号: 2000342 DOI: 10.1002/marc.202000342 提前访问日期: AUG 2020

摘要: The ability to pattern and actuate hydrogels is essential for biomimetics, soft robotics, and biosensors. Here an electrical writing technique with the capability to create both surface and across thickness patterns in dynamic chitosan-H+/agarose hydrogel by electronically generated pH gradient is introduced. The diffusible pH cues deprotonate and re-assemble chitosan chains by hydrogen bonds, changing the electrical writing domains from original loose structure to a dense layer and resulting in different mechanical stress and swell ability that causes the hydrogel to deform. The deformable trend can be modulated by writing depth and selective writing area on the surface, and significantly enhanced by temperature increment. Finally, a dual electrical writing process to create three-dimensional patterns and demonstrate programmable shape transition by differing patterns is performed.

入藏号: WOS:000559972900001

文献类型: Article; Early Access

作者关键词: agarose; chitosan; electrical writing; hydrogel; shape deformation

地址: [Zhu, Xinyi; Wu, Si; Yang, Chen; Deng, Hongbing; Du, Yumin; Shi, Xiaowen] Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Hubei Engn Ctr Nat Polymers Based Med Mat,Hubei B, Wuhan 430079, Peoples R China.

通讯作者地址: Shi, XW (corresponding author)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Hubei Engn Ctr Nat Polymers Based Med Mat,Hubei B, Wuhan 430079, Peoples R China.

电子邮件地址: shixw@whu.edu.cn

影响因子：4.886