Diseño y simulación electrostática de electrodos interdigitales para determinación de capacidad usando varios dieléctricos

Abstract

In the simulator we choose a new model where the 2D space dimension was selected, and the chosen physics is electrostatics where the study is stationary. It was possible to design and simulate the interdigital electrodes by means of geometries centered in the coordinates XW=0 and YW=0 using a Multiphysics software for the determination of the capacity using several dielectrics and to know applications in capacitive sensors. Material libraries were used for the choice of materials for the base, the electrodes, the material under test and the cube. The union of the materials in each geometry resulted in different values in the Maxwell capacity, being the water with the highest relative permittivity showing more effectively the red color referring to the positive of the electric field. It was possible to analyze the electric field pattern where the flux lines go with greater precision starting from the positive pole to the negative pole not only by means of jumps between the electrodes but also directly where the positive charge of the electrodes is reflected with greater intensity. interdigital electrodes; therefore, it was distinguished that performing the six tests, the result of Maxwell's capacities varied according to the change of materials, both in the base and in the material under test; and, the most outstanding of the test was: Mica, Gold and Water, obtaining the highest relative permittivity and/or dielectric constant.