Nonlinear pressure-dependent conductivity of magnetorheological elastomers

The nonlinear pressure-dependent conductivity of magnetorheological elastomers (MREs) is presented in this note. The effective cross-sectional area of current flowing through two adjacent particles is taken as a key parameter to analyze the electric field assisted tunnel current and the conduction c...

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Published inSmart materials and structures Vol. 19; no. 11; p. 117001
Main Authors Zhu, Xuli, Meng, Yonggang, Tian, Yu
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2010
Institute of Physics
Subjects
Applied sciences
Compressing
Compression tests
Compressive properties
Cross sections
Elastomers
Electric fields
Exact sciences and technology
Industrial polymers. Preparations
Magnetic fields
Nonlinearity
Polymer industry, paints, wood
Technology of polymers
Pressure effect
Magnetorheology
Magnetic material
Elastomer
Conductivity
Non linear effect
Experimental study
Electric current
Modeling
Smart materials
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Summary:The nonlinear pressure-dependent conductivity of magnetorheological elastomers (MREs) is presented in this note. The effective cross-sectional area of current flowing through two adjacent particles is taken as a key parameter to analyze the electric field assisted tunnel current and the conduction current. The theory predicts the nonlinear dependence of conductivity of MREs on electric field intensity and compressive stress. The MRE samples were prepared at low particle fractions and low magnetic fields. The conductances of the MRE samples under different electric fields and compressions have been measured, and the experimental results have shown a good agreement with the theoretical predictions.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/19/11/117001