Complex materials
2006-01-01 -> 2008-12-31
Projektbeskrivning
More and more complex materials are introduced in electronic equipments today. Usually these materials have an intricate microstructure which makes the response of an electromagnetic field complicated. The materials have to be characterized as anisotropic materials, or in some cases even as chiral materials. For simple, e.g. isotropic, non-magnetic, materials the modeling of the electromagnetic response is well established and reliable. This is done in terms of the permittivity and the permeability of the material, and there exist accurate models for the determination of these quantities from experiments made in waveguide or cavity geometries. There is lack of accurate general methods for the determination of material parameters in more complex materials that show e.g. anisotropy. Without a priori knowledge of the microstructure and its symmetries the number of useful methods is quite limited. This project aims at addressing these unsolved questions of determining the material parameters for complex materials. The project consists of both a theoretical and an experimental part. The theoretical part solves the modeling of the material due to the response of an electromagnetic wave. These results are then utilized to extract the information of the material parameters from the experimental results.