=== Defining Dielectric Objects ===
[[File:FDTD4.png|thumb|250px|[[MoM3D Module]]'s Dielectric dialog]]
Of the two simulation engines of EM.Cube's [[MoM3D Module]] only the Surface MoM solver can handle dielectric objects as dielectric materials cannot be modeled by wireframe structures. Dielectric objects are created under the '''Dielectric''' node in the '''Physical Structure''' section of the Navigation Tree. They are grouped together by their color and material properties. You can insert different dielectric groups with different colors and different permittivity e<sub>r</sub> and electric conductivity s. Note that a PEC object is the limiting cases of a lossy dielectric material when σ → ∞.
* You may also choose from a list of preloaded material types. Click the button labeled '''Material''' to open EM.Cube's Materials dialog. Select the desired material from the list or type the first letter of a material to find it. For example, typing '''V''' selects '''Vacuum''' in the list. Once you close the dialog by clicking '''OK''', the selected material properties fill the parameter fields automatically.
* Click the '''OK''' button of the dielectric material dialog to accept the changes and close it.
[[File:FDTD4.png]]
Figure 1: [[MoM3D Module]]'s Dielectric dialog.
[[File:FDTD5.png]]
Figure 2: EM.Cube's material list.
=== Moving Objects Between Groups & Modules ===