Application of a semiconductor tip to capacitance microscopy

A semiconductor tip has been applied to the scanning capacitance microscopy (SCM). Local electrostatic fields are measured through depletion of carriers at the tip end. A Si microcantilever with the sharp end is employed. This SCM technique has been used in a capacitance observation of a dielectric/electrode sample. Potentiometry using this technique is demonstrated in an experiment of charge injection recording on a polymer film.