Metal Contact
The Metal Contact node is used for modeling what happens when a plasma is in contact with a metal surface. The Metal Contact can only be applied on boundaries adjacent to the Plasma Model feature. This feature is available when using The Plasma Interface, The Inductively Coupled Plasma Interface, and The Microwave Plasma Interface.
Terminal
Specify the terminal properties. To indicate which boundaries belong to the same terminal, enter the same name in the Terminal name field.
Select a Terminal type — Voltage (the default), Current or Circuit. Select:
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Voltage to enter an electric potential V0.
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Current to enter the Terminal current I0. This ensures that the total current arriving on the boundary is equal to the specified value. The current arriving on the boundary is the sum of the displacement current due to the time varying electric potential and conduction current due to the fact that ions an electrons may be incident on the surface.
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Circuit to specify a terminal connected to an external circuit. The Terminal node provides a current-voltage characteristic to the circuit element.
If the finite element discretization is employed and when using the Current or Circuit options (see below), then the Weak constraints option in Constraint could be activated in the Constraint Settings section to make the problem easier to solve.
Circuit Settings
This section is available when Voltage is selected as the Terminal type. Select a Circuit type — None (the default), Ballast resistor, Blocking capacitor, Series RC circuit, or Parallel C with ballast resistor.
Constraint Settings
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog.