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Can I simulate thin metal film's optical effects in ewfd module?

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Hi All,

I want to simulate the reflectance and transmittance spectra when a light incident on a thin metal film (100nm) on a sapphire.

I looked through the application on COMSOL website: Anti-Reflective Coating with Multiple Layers. The physics they were used is gop, and the thin layer specified by a attribute called "thin dielectric film". However, I want to model a thin metal which is not a dielectric material.
So I tried ewfd module by creating a thin layer in geometry and put in metal material.

Since there is no attribute called "thin metal/dielectric film" in ewfd, can I use this module to simulate thin film effect?

Thanks,
;)

1 Reply Last Post 6 giu 2017, 12:15 GMT-4
Walter Frei COMSOL Employee

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Posted: 7 years ago 6 giu 2017, 12:15 GMT-4
Hello,

With regards to modeling thin films of metal in electromagnetics, you may want to look to the Transition boundary condition.
See this example:
www.comsol.com/model/beam-splitter-14691
As well as this blog:
www.comsol.com/blogs/modeling-metallic-objects-in-wave-electromagnetics-problems/

As an alternative to the above, you may also find this interesting:
www.comsol.com/blogs/how-to-model-the-optical-properties-of-rough-surfaces/

Best Regards,
Hello, With regards to modeling thin films of metal in electromagnetics, you may want to look to the Transition boundary condition. See this example: https://www.comsol.com/model/beam-splitter-14691 As well as this blog: https://www.comsol.com/blogs/modeling-metallic-objects-in-wave-electromagnetics-problems/ As an alternative to the above, you may also find this interesting: https://www.comsol.com/blogs/how-to-model-the-optical-properties-of-rough-surfaces/ Best Regards,

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