“…Planar interdigital geometry [1], non-destructive testing capability, single side access to the test sample [2], control of signal strength, fringing field penetration depth control, miniature size [3], simplified modeling [4], and low fabrication cost are a few advantages for this type of sensors. These characteristics have attracted the attention of device designers to design, simulate and develop sensing systems based on these sensors for numerous applications; especially, biological [5]- [7], product quality estimation, [2], [8]- [10] and chemical sensing applications [11], [12]. The principle of operation of PID sensors is technically the same as conventional parallel plate or coaxial cylinder dielectric sensor where the capacitance and conductance between the electrodes is a function of the dielectric nature of the test sample and electrode geometry [13].…”