Directed Motility of Hygroresponsive Biomimetic Actuators

Lidong Zhang, Stanislav Chizhik, Yunze Wen, Pance Naumov

    Research output: Contribution to journalArticle

    Abstract

    The capability of cellulose microfibrils to elicit directionality by anisotropically restricting the deformation of amorphous biogenic matrices is central to the motility of many plants as motoric and shape-restoring elements. Herein, an approach is described to control directionality of artificial composite actuators that mimic the hygroinduced motion of composite plant tissues such as the opening of seed pods, winding of plant tendrils, and burial of seed awns. The actuators are designed as bilayer structures where single or double networks of buried parallel glass fibers reinforce the composite. By anisotropically restricting the expansion along certain directions they also effectively direct the mechanical reconfiguration, thereby determining the mechanical effect. A mathematical model is developed to quantify the kinematic response of fiber-reinforced actuators. Within a broader context, the results of this study provide means for control over mechanical deformation of artificial dynamic elements that mimic the oriented fibrous architectures in biogenic motoric elements. A simple, yet universal approach to the design of composite thermoresponsive and hygroresponsive actuators with directional motion that mimics the motility of bilayer architectures in plants is reported. An overarching mathematical model is also developed to quantify the kinematic response of fiber-reinforced actuators in artificial dynamic elements.

    Original languageEnglish (US)
    Pages (from-to)1040-1053
    Number of pages14
    JournalAdvanced Functional Materials
    Volume26
    Issue number7
    DOIs
    StatePublished - Feb 16 2016

    Fingerprint

    locomotion
    biomimetics
    Biomimetics
    Actuators
    actuators
    composite materials
    Composite materials
    Seed
    seeds
    mathematical models
    Kinematics
    kinematics
    Mathematical models
    fibers
    Fibers
    glass fibers
    cellulose
    Cellulose
    Glass fibers
    Tissue

    Keywords

    • actuators
    • hydrogels
    • polymer chemistry
    • smart films
    • smart materials

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biomaterials
    • Condensed Matter Physics
    • Electrochemistry

    Cite this

    Directed Motility of Hygroresponsive Biomimetic Actuators. / Zhang, Lidong; Chizhik, Stanislav; Wen, Yunze; Naumov, Pance.

    In: Advanced Functional Materials, Vol. 26, No. 7, 16.02.2016, p. 1040-1053.

    Research output: Contribution to journalArticle

    Zhang, L, Chizhik, S, Wen, Y & Naumov, P 2016, 'Directed Motility of Hygroresponsive Biomimetic Actuators', Advanced Functional Materials, vol. 26, no. 7, pp. 1040-1053. https://doi.org/10.1002/adfm.201503922
    Zhang, Lidong ; Chizhik, Stanislav ; Wen, Yunze ; Naumov, Pance. / Directed Motility of Hygroresponsive Biomimetic Actuators. In: Advanced Functional Materials. 2016 ; Vol. 26, No. 7. pp. 1040-1053.
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