(a) Open structure with square probe array and code indicating the investigated contact configuration. (b) Bordered square with quarter-circle corner contacts and code indicating the investigated contact configuration.
Picture for the configuration of the current lines (full white lines) and adjoint current density (dashed white lines), which are symmetric to the horizontal line . The equipotentials are perpendicular to the current lines. The values of the dot product of are given in gray. The white areas have a negligible contribution to the integral and the very dark areas contribute strongly to the integral.
Geometry correction factors and ratios for the open structure with square array probe vs .
The geometry correction factors and ratios for the square sample with corner contacts vs .
spectra obtained from a square carbon sample with .
Approximations for and at and around the contacts in and .
Summary of analytical expressions for the open and bordered square structures.
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