Note on Availability

Infinite elements and perfectly matched layers are available only for some physics and when COMSOL Multiphysics is used together with certain add-on modules. If you have not added any physics that is compatible with infinite elements or perfectly matched layers under the available licenses, you cannot add such features to the model.

Further, after turning a domain into a PML or infinite element, that domain is not allowed in the active selection of physics interfaces and individual nodes that are not compatible with these special domain types. This means that the scaled domains are either not selectable at all or display as Not applicable in the selection list.