Acoustic Cloaking

Application ID: 3867

This example demonstrates how to use a background field in a sound scattering problem. The application is an acoustic invisibility cloak made of a metamaterial. Two different types of metamaterials are used, one using an anisotropic acoustic material with varying properties and one using two layered materials with varying properties. Thanks to its space-dependent material properties and layered structure, both types of metamaterials are almost transparent to an incident plane pressure wave.

This model example illustrates applications of this type that would nominally be built using the following products: