Document Type

Article

Publication Version

Published Version

Publication Date

2014

Journal or Book Title

Applied Physics Letters

Volume

104

Issue

3

First Page

032901-1

Last Page

032901-4

DOI

10.1063/1.4862434

Abstract

This Letter presents an analytical expression for the capacitance of a curved patch capacitor whose electrodes conform to the curvature of a long, homogeneous, cylindrical dielectric rod. The capacitor is composed of two infinitely long curved electrodes, symmetrically placed about a diameter of the cylinder cross-section. The resulting capacitance per unit length depends on both the dielectric properties of the material under test and the capacitor configuration. A practical capacitance measurement is also presented, with appropriately guarded finite electrodes. Very good agreement between measured and theoretically predicted capacitances were observed, to within 2.4 percent. The analytical result presented in this Letter can be applied for extremely rapid evaluation of rod permittivity from measured capacitance.

Comments

The following article appeared in Applied Physics Letters 104 (2014): 032901, and may be found at doi:10.1063/1.4862434.

Rights

Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Copyright Owner

AIP Publishing

Language

en

File Format

application/pdf

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