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:
* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Perfect_Electric_Conductors_.26_Metal_Traces Perfect Electric Conductor (PEC) |Perfect Electric Conductor (PEC) Objects]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Thin_Wires Thin Wire |Thin Wires]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Perfect_Magnetic_Conductors_.26_Slot_Traces Perfect Magnetic Conductor (PMC) |Perfect Magnetic Conductor (PMC) Planes]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Defining_Dielectric_Materials Dielectric Material |Dielectric Materials]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Anisotropic_Materials Anisotropic Material |Anisotropic Materials]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Dispersive_Materials Dispersive Material |Dispersive Materials]]'''* '''[[Glossary of EM.Cube's Materials & Physical Object Types#Inhomogeneous_Materials Voxel Database |Inhomogeneous MaterialsVoxel Databases]]'''
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.