Kinetics-Induced Morphing of Three-Dimensional-Printed Gel Structures Based on Geometric Asymmetry

Li, Qi1,2; Xu, Zhao2; Ji, Suchun1; Lv, Pengyu1; Li, Xiying1; Hong, Wei2,3; Duan, Huiling1

2020-07

10.1115/1.4046920

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME   影响因子和分区

0021-8936

1528-9036

Emerging three-dimensional (3D) printing techniques for soft active materials have demonstrated fascinating applications in various areas including programmable and reconfigurable structures, tissue engineering, and soft robotics. For example, polymeric gels, which consist of polymer networks swollen with solvent molecules, are capable of deforming and swelling/deswelling in response to external stimuli. Although polymeric gels are used to print structures, little attention has been paid to the effect of printing parameters on the cross-sectional shape of 3D-printed gel filaments or further to the dynamic responses of the printed structures. Due to the flow of the precursor solution before fully cured, the cross section of a printed gel filament is usually asymmetric. When immersed in water, the asymmetry in the cross section causes the printed filament to bend, and the interdiffusion of the two solvents leads to the alternation in bending direction. The bending curvature and response rate can be adjusted by turning printing parameters. As applications of this mechanism, we demonstrated various types of gel structures, capable of deforming from 1D strips to 2D spiral or sinusoidal shapes, warping from 2D flat sheet to 3D cylindrical helix when swollen, or wrapping and manipulating objects under external stimuli.

asymmetry kinetics-induced morphing soft actuator 3D printing

SCI ; EI

英语

通讯

National Natural Science Foundation of China[91848201][11872004]

Mechanics

Mechanics

WOS:000554446700008

ASME

20203809210636

Tissue engineering ; 3D printers ; Swelling ; Deformation

Biomedical Engineering:461.1 ; Printing Equipment:745.1.1 ; Colloid Chemistry:801.3 ; Chemical Products Generally:804 ; Materials Science:951

ENGINEERING

Web of Science

1.Peking Univ, Coll Engn, Dept Mech & Engn Sci, BIC ESAT,State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Hokkaido Univ, Global Inst Collaborat Res & Educ, Global Stn Soft Matter, Sapporo, Hokkaido, Japan

Li, Qi,Xu, Zhao,Ji, Suchun,et al. Kinetics-Induced Morphing of Three-Dimensional-Printed Gel Structures Based on Geometric Asymmetry[J]. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,2020,87(7).

Li, Qi.,Xu, Zhao.,Ji, Suchun.,Lv, Pengyu.,Li, Xiying.,...&Duan, Huiling.(2020).Kinetics-Induced Morphing of Three-Dimensional-Printed Gel Structures Based on Geometric Asymmetry.JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,87(7).

Li, Qi,et al."Kinetics-Induced Morphing of Three-Dimensional-Printed Gel Structures Based on Geometric Asymmetry".JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME 87.7(2020).