A Simple and Precise Way to Determine Electrical Resistivity of Isotropic Conductors: Simplifying the Four-Probe Method

TL;DR

This paper introduces an analytical method that simplifies and improves the precision of measuring electrical resistivity in isotropic conductors, replacing the traditional four-probe technique through simulation insights.

Contribution

It presents a new analytical approach based on COMSOL simulations that enhances the simplicity and accuracy of resistivity measurements for isotropic conductors.

Findings

Simulation accurately models electric potential and field.

Analytical method matches or exceeds four-probe accuracy.

Simplifies resistivity measurement process.

Abstract

COMSOL Multiphysics software is used to describe the behavior of the electrical resistivity of several samples with rectangular shape typically used in the Montgomery method. The simulation data obtained using four isotropic conductors allowed us to understand in detail the behavior of the electric potential and electric field of the samples. The results provide an analytical method which can substitute the four-probe method with much more simplicity and precision.