How Can I Set Charge Boundary Conditions?

Date	Category
2025-06-30 21:10:35	Charge

Boundary conditions for heat simulations are defined using the HeatChargeBoundarySpec class, which has two required fields: condition and placement.

• condition: Specifies the boundary condition to impose. It accepts one of the following types:

  • VoltageBC

  • CurrentBC

  • InsulatingBC

• placement: Specifies where the boundary condition should be applied. Available options include:

  • StructureBoundary
    The boundary of a structure. Only the portion of the boundary not covered by subsequent structures is considered.

  • StructureStructureInterface
    The interface between two structures. Specifically, this refers to the boundary of the succeeding structure that lies within the preceding structure.

  • MediumMediumInterface
    The interface between two media.

  • SimulationBoundary
    The boundary of the heat simulation domain. You can specify particular surfaces using the surfaces field. By default, all surfaces are selected.

  • StructureSimulationBoundary
    The portion of the heat simulation domain boundary that is covered by a structure. As with StructureBoundary, only regions not covered by subsequent structures are included.

You can check out this Carrier injection based Mach-Zehnder modulator notebook for an example of how to use it in practice.