CLASSICAL WAVE-PROPAGATION IN PERIODIC STRUCTURES - CERMET VERSUS NETWORK TOPOLOGY

We have investigated classical waves propagating in periodic binary composites. For electromagnetic waves the network topology, in which the low-velocity material forms a continuous network, is more favorable for the appearance of gaps. In contrast, for scalar and elastic waves the cermet topology, in which the low-velocity material consists of isolated inclusions surrounded by the high-velocity host material, is more favorable.