Your physical structure in EM.Tempo can be made up of several geometric objects with different material compositions. EM.Tempo groups your geometric objects in the project workspace based on their material type. All the objects belonging to the same material group share the same color and same material properties. EM.Tempo's material types are divided into seven categories:
* '''[[Defining_Materials_in_EMGlossary of EM.Cube's Materials & Physical Object Types#Perfect_Electric_Conductors_.26_Metal_Traces |Perfect Electric Conductor (PEC) Objects]]'''* '''[[Defining_Materials_in_EMGlossary of EM.Cube's Materials & Physical Object Types#Thin_Wires |Thin Wires]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Perfect_Magnetic_Conductors_.26_Slot_Traces |Perfect Magnetic Conductor (PMC) Planes]]'''* '''[[Defining_Materials_in_EMGlossary of EM.Cube's Materials & Physical Object Types#Defining_Dielectric_Materials |Dielectric Materials]]'''* '''[[Defining_Materials_in_EMGlossary of EM.Cube's Materials & Physical Object Types#Anisotropic_Materials |Anisotropic Materials]]'''* '''[[Defining_Materials_in_EMGlossary of EM.Cube's Materials & Physical Object Types#Dispersive_Materials |Dispersive Materials]]'''* '''[[Defining_Materials_in_EMGlossary of EM.Cube's Materials & Physical Object Types#Inhomogeneous_Materials |Inhomogeneous Materials]]'''* '''[[Defining_Materials_in_EM.Cube#Thin_Wires |Thin Wires]]'''
Under each material node in the navigation tree, you can create new material groups of the same type but with different properties such as color, texture, or electric and magnetic constitutive parameters. These material groups are used to organize both the geometric objects you draw in the project workspace and those you import from external CAD model files.