Surface resistance

Surface resistance, also known as surface impedance, refers to the electrical resistance that is specific to the surface of a material. It is measured by defining a square test area across which a current flows. In other words, it represents the resistance that an electric current must overcome when it flows across the surface of an object.

This resistance is usually measured in ohms. The length of the electrodes that transfer the current to the test area corresponds to the distance between them. By measuring the surface resistance, important information about the electrical properties of a material can be obtained, which is particularly important in areas such as electronics, materials science and the manufacture of electrical devices.