The permittivity of Ag is characterized by the Drude model:
epsilon_{m}=epsilon_{infty}-omega_{p}^{2}/(omega^{2}+i*omega*gamma)
epsilon_{infty}=3.7
omega_{p}=9.1 eV
gamma=0.018 eV
How can import and use this model in Comsol Multiphysics?
Hi Eh San
If you are using "Electromagnetic wave, frequency domain" module, go to "wave equation, Electric" settings, under "Electric displacement field" choose "Drude-Lorentz dispersion model" and enter the values for the parameters.
Be careful about the units. Also the formula for Drude-Lorentz model in Comsol is a bit different from what you find in most literature.
Hi Eh San
If you are using "Electromagnetic wave, frequency domain" module, go to "wave equation, Electric" settings, under "Electric displacement field" choose "Drude-Lorentz dispersion model" and enter the values for the parameters.
Be careful about the units. Also the formula for Drude-Lorentz model in Comsol is a bit different from what you find in most literature.
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