Cylindrical geometry electroquasistatic dielectrometry sensors

Semi-analytical models are used to simulate the response of cylindrical geometry electroquasistatic dielectrometry sensors. Fourier-Bessel series methods in combination with collocation point numerical techniques are used to generate accurate sensor simulations. The validity of the model is confirmed experimentally, where the combined response of two circularly symmetric dielectric sensors with different depths of penetration is used to simultaneously measure the permittivity and liftoff of a dielectric from the sensor surface.