Wave Mechanics of Microwave Absorption Films: Part 1 - Insights and Review

Abstract

Abstract Based on transmission line theory, it has been established that the mechanism governing microwave absorption in films differs from that observed in their constituent materials. This fundamental distinction, though straightforward, remains a point of contention within the research community. The prevailing argument posits that microwaves become entrapped through successive reflections within the film, subsequently being absorbed along a zigzag trajectory within the material. As a result, some researchers argue against any distinction between film and material. Their stance is underpinned by their conviction that the existing microwave absorption theory garners robust support from experimental data. However, Part 1 of this study endeavors to demonstrate that these empirical observations can be reinterpreted with greater accuracy by recognizing the pivotal role of the film. This role will receive further exploration from a fresh perspective in Part 2, where disparities between films and their constituent materials will be examined, and in Part 3, dedicated to the design of multilayer films. The key features of the novel wave mechanics theory, which unveil new principles in film physics, have been examined.