About the collinear four-point probe technique´s inability to measure the resistivity of anisotropic electroconductive fabrics

The sheet resistance of electrically conducting screen-printed surfaces can be measured with different techniques such as Van Der Pauw or four-point probe. As electroconductive textile materials show anisotropic behaviour we investigate the possibility of using the four-point probe method to measure the anisotropic properties of the electric conductivity. It was proved both theoretically and experimentally that no anisotropy can be detected with the collinear contacts of the four-point probe.