How to see the relative permittivity of a material

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For example, I choose the material Ag and add it in my model. However, in material settings I can only see the index of refraction such as nr(real) and ni(imag). I know the relative permittivity is the square of refraction index. How can I get the relative permittivity in terms of frequency and draw the curve.

Thank you for your answer.


0 Replies Last Post Sep 14, 2024, 4:23 a.m. EDT
COMSOL Moderator

Hello 厚琦 艾

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