A compact electroactive polymer actuator suitable for refreshable Braille display

Kailiang Ren, Sheng Liu, Minren Lin, Yong Wang, Qiming Zhang

    Research output: Contribution to journalArticle

    85 Citations (Scopus)

    Abstract

    The large strain, high elastic modulus, and easy processing of poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) electrostrictive terpolymer make it very attractive to replace low strain piezoceramics and piezopolymers in many applications with much improved performance. In this paper, a compact polymer actuator is developed utilizing the electrostrictive terpolymer, which is suitable for full page Braille display and graphic display. Key issues related to the reliability of electroactive polymers used in the compact actuators and for the mass fabrication of these polymer actuators are investigated. Making use of a recently developed conductive polymer, a screen printing deposition method was developed which enables direct deposition of very thin conductive polymer electrode layer (<0.1 μm) with strong bonding to the terpolymer surface and short fabrication time. It was observed that the thin conductive polymer electrodes lead to the self-healing of the polymer after electric breakdown. An electroactive polymer (EAP) compact Braille actuator was designed and fabricated with these terpolymer films wound on a spring core. The test results demonstrate that the EAP Braille actuator meets all the functional requirements of actuators for refreshable full Braille display, which offers compact size, reduced cost and weight.

    Original languageEnglish (US)
    Pages (from-to)335-342
    Number of pages8
    JournalSensors and Actuators, A: Physical
    Volume143
    Issue number2
    DOIs
    StatePublished - May 16 2008

    Fingerprint

    braille
    Electroactive polymer actuators
    electroactive polymers
    Polymers
    actuators
    Display devices
    polymers
    Terpolymers
    Actuators
    fabrication
    electrodes
    healing
    vinylidene
    printing
    fluorides
    Fabrication
    modulus of elasticity
    Electrodes
    Screen printing
    breakdown

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Instrumentation
    • Condensed Matter Physics
    • Surfaces, Coatings and Films
    • Metals and Alloys
    • Electrical and Electronic Engineering

    Cite this

    Ren, Kailiang ; Liu, Sheng ; Lin, Minren ; Wang, Yong ; Zhang, Qiming. / A compact electroactive polymer actuator suitable for refreshable Braille display. In: Sensors and Actuators, A: Physical. 2008 ; Vol. 143, No. 2. pp. 335-342.
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    A compact electroactive polymer actuator suitable for refreshable Braille display. / Ren, Kailiang; Liu, Sheng; Lin, Minren; Wang, Yong; Zhang, Qiming.

    In: Sensors and Actuators, A: Physical, Vol. 143, No. 2, 16.05.2008, p. 335-342.

    Research output: Contribution to journalArticle

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