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Simulation studies of internal mechanisms in the static deflection of a cellulose electroactive paper actuator

J. Appl. Phys. 103, 064912 (2008); doi:10.1063/1.2891676

Published 28 March 2008

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R. P. Joshi and F. Mbaye
Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529, USA

P. Basappa
Department of Electronics Engineering, Norfolk State University, Norfolk, Virginia 23504, USA

S. D. Jang and J. Kim
Department of Mechanical Engineering, Inha University, Incheon 402-751, Korea

J. C. Hall
Department of Chemistry, Norfolk State University, Norfolk, Virginia 23529, USA
Studies of voltage-induced deflections in electroactive paper (EAPap) have been carried out. On the experimental side, measurements of bias-dependent deflections and strain, water absorption as a function of time, and relative humidity were obtained for the cellulose EAPap actuator. In addition, model simulations have also been carried out to probe and quantify the role of the various internal mechanisms responsible for the deflection. Our simulation predictions yield good agreement with the measured deflection data for the EAPap. The modeling suggests that internal ion content and its migration, water absorption leading to a nonuniform permittivity, random variations in the transverse piezoelectric-coupling coefficient d31,i, and the modulus of elasticity all collectively contribute to the EAPap deflection electrophysics. It also appears that higher sensitivity, with a minimal bias dependence, could be achieved by deliberately adding ions during EAPap processing. ©2008 American Institute of Physics
History: Received 22 August 2007; accepted 10 January 2008; published 28 March 2008
Permalink: http://link.aip.org/link/?JAPIAU/103/064912/1
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KEYWORDS and PACS

Keywords
PACS
  • 81.05.Lg
    Organic materials and polymers: fabrication, treatment, testing and analysis
  • 77.84.Jd
    Dielectric, piezoelectric, and ferroelectric polymers; organic compounds
  • 77.65.Bn
    Piezoelectric and electrostrictive constants
  • 77.22.Ch
    Permittivity (dielectric function)
  • 81.40.Jj
    Elasticity and anelasticity, stress-strain relations
  • 62.20.de
    Elastic moduli of solids
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
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