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Updated: Mar 31, 2026
Finite Element Modelling of a Cellular Electric Microenvironment
Published on: May 18, 2021
Study of interdigitated electrode arrays using experiments and finite element models for the evaluation of
Jan Oberländer1,2, Zaid B Jildeh3, Patrick Kirchner4
1Institute of Nano- and Biotechnologies (INB), FH Aachen University of Applied Sciences, Heinrich-Mussmann-Str. 1, Jülich 52428, Germany. oberlaender@fh-aachen.de.
Abstract:
In this work, a sensor to evaluate sterilization processes with hydrogen peroxide vapor has been characterized. Experimental, analytical and numerical methods were applied to evaluate and study the sensor behavior. The sensor set-up is based on planar interdigitated electrodes. The interdigitated electrode structure consists of 614 electrode fingers spanning over a total sensing area of 20 mm². Sensor measurements were conducted with and without microbiological spores as well as after an industrial sterilization protocol. The measurements were verified using an analytical expression based on a first-order elliptical integral. A model based on the finite element method with periodic boundary conditions in two dimensions was developed and utilized to validate the experimental findings.
