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

    Source: Journal of Applied Mechanics:;2020:;volume( 087 ):;issue: 007
    Author:
    Li, Qi
    ,
    Xu, Zhao
    ,
    Ji, Suchun
    ,
    Lv, Pengyu
    ,
    Li, Xiying
    ,
    Hong, Wei
    ,
    Duan, Huiling
    DOI: 10.1115/1.4046920
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: 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.
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      Kinetics-Induced Morphing of Three-Dimensional-Printed Gel Structures Based on Geometric Asymmetry

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4273329
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    contributor authorLi, Qi
    contributor authorXu, Zhao
    contributor authorJi, Suchun
    contributor authorLv, Pengyu
    contributor authorLi, Xiying
    contributor authorHong, Wei
    contributor authorDuan, Huiling
    date accessioned2022-02-04T14:16:38Z
    date available2022-02-04T14:16:38Z
    date copyright2020/05/06/
    date issued2020
    identifier issn0021-8936
    identifier otherjam_87_7_071008.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4273329
    description abstractEmerging 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.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleKinetics-Induced Morphing of Three-Dimensional-Printed Gel Structures Based on Geometric Asymmetry
    typeJournal Paper
    journal volume87
    journal issue7
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.4046920
    page71008
    treeJournal of Applied Mechanics:;2020:;volume( 087 ):;issue: 007
    contenttypeFulltext
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