SHEET CONDUCTANCE/RESISTANCE MEASUREMENT SYSTEM

摘要

An apparatus for testing of electrical or physical properties of a material include a single coil sensor (4) mounted adjacent to a sample (6) of the material. Sheet conductance of a wide variety of materials may be measured using the single coil (4) to determine if the material conforms to generally accepted standards for the use to which the material will be put. In some examples, the material is a semiconductor wafer or flat panel, In other examples, the material is the body tissue of a patient. A non-invasive technique is disclosed for monitoring the health of patient tissue such as musculature, and/or to determine whether healthy circulation is present, by measuring the conductance of the patient tissue (6) in response to a magnetic field applied by the single coil (4). The single coil (4) maybe hand held, or it may be movable using an automated positioning system (26, 35, 44) under computer control (46).