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Constant values and variables

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Hello!
Under the component-plasma-metal contact node, I want to set a voltage on the metal contact boundary. I tried to set a constant value that can be calculated normally. Now I want to set the voltage to a sinusoidal scan voltage. How should I set it? The methods I have tried cannot be calculated normally. 
thank you for reading! I look forward to your guidance.

0 Replies Last Post Jun 23, 2020, 10:41 p.m. EDT
COMSOL Moderator

Hello Coco

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