After selecting the Add option the following panel will be shown on the right side of the window:
Add Material panel
This option allows the user to create a new material. The following options are available
- Material Attributes-Name. The user may want to provide a name for this material for future reference.
- Material Attributes-Color. For more information, see APPENDIX A: Color Selection
- Material Definition - Material defined by geometry: Used to define a material according to its physical properties. After clicking on the Set Parameters button, two different options are available in the Material defined by Geometry window:
Material defined by geometry
o Constant: Selecting this option sets the epsilon (e’ - permittivity) and mu (µ’ - permeability) properties immutable. The user will need to specify both real and imaginary components of both properties or loss tangent and relative permittivity. Common real values for epsilon and mu are greater of equal to 1.0. If the imaginary part is negative, the material is considered to have losses; otherwise, it’s considered to be a material with gain.
o Anisotropic: This option allows the user to set the material properties depending on the volumetric subdomain direction (i.e. the dielectric coefficient may change depending on the direction of the subdomains). The epsilon parameter consists of a 3x3 matrix where all Cartesian combinations can be modified. The materials using this option are only designed to be applied to volumes.
· Material Definition - Material defined by reflection coefficient: Used to define a material according to its reflection coefficient. After clicking on the Set Parameters button, a window appears to define the reflection coefficient:
Material defined by reflection coefficient