I built a model for the electric field in thin-films with interdigitated electrodes.
An interactive demo is hosted at Streamlit, while the source is hosted on Github.
The model is presented in A unified approach for the calculation of in-plane dielectric constant of films with interdigitated electrodes.
This work builds upon a knowledge base of a a series of works detailing how to accurately characterize in-plane ferroelectric properties of thin films, started in the group of Paul Muralt at EPFL, with works such as 1 2 and 3.