A direct domain-decomposition of linear complexity for time-domain finite-element based analysis of multiscale structures and materials in integrated circuits

In this work, a direct domain-decomposition of linear complexity is developed to overcome the challenge of simulating a wide range of geometrical scales spanning at least 10000:1 present in an integrated circuit system. This method is developed in the framework of a time-domain finite-element method. It allows for the use of different meshes in different domains. Numerical experiments have validated the proposed method.