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Static dielectric constant assessment from capacitance over a wide range of electrode separations
Published in Elsevier B.V.
2017
Volume: 87
   
Pages: 19 - 25
Abstract
Static dielectric constant extraction from two-electrode capacitance measurement over a wide range of electrode separations and dielectric constants involves careful assessment of fringe fields. Finite-element method has been employed to compute capacitance and quantify fringe fields for parallel electrode capacitor of (finite thickness, radii r, electrode separation d), with a homogeneous dielectric medium extending up to the geometric limits of the electrodes. Two distinct regimes, in the fringe field contributions are seen. A procedure to extract the static dielectric constant has been proposed for the first regime and a validation has been provided for the same. © 2017 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Electrostatics
PublisherData powered by TypesetElsevier B.V.
ISSN03043886
Open AccessNo
Concepts (14)
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    Capacitance
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    Capacitance measurement
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    Finite element method
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    Permittivity
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    Separation
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    Circular discs
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    Electrode separation
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    FINITE THICKNESS
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    Fringing fields
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    HOMOGENEOUS DIELECTRICS
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    PARALLEL ELECTRODES
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    STATIC DIELECTRIC CONSTANTS
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    Two electrodes
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    Electrodes