Pyrolytic Carbon: Applications of Diamagnetic Levitation in Metrology

This paper presents some current or potential applications in metrology implementing the diamagnetic property of pyrolytic carbon (PyC). The magnetic repulsion force acting between a piece of PyC placed in a magnetic flux density can be used as magnetic spring either to control the position of the sensitive sensor part or to detect change of a physical quantity to be measured. Several examples of PyC-based sensors are presented.