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Thin metal film microwave heating.

Posted Oct 7, 2024, 2:24 p.m. EDT Electromagnetics, RF & Microwave Engineering, Physics Interfaces 1 Reply

Sujeong Lee
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Hello. I want to simulate microwave heating of metal/dielectric/metal structure

  1. Comsol makes error when I shrink the dielectric or metal size down to micrometer or nanometer scale. Why it happens? How can i adjust?

  2. Two metals are 50nm and they are shorter than skin depth. Although there was negligible power absorption in metal with cm scales, I think power absorbed in metal would rapidly increase when its thickness become close to skin depth.

Is my assumption right? What physics model I should add to take into account this situation?

I appreciate any help.

1 Reply Last Post Oct 9, 2024, 1:04 p.m. EDT
David Greve
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Posted: 6 months ago Oct 9, 2024, 1:04 p.m. EDT

By "error" I think you mean difficulty in meshing?

A thin layer is best dealt with using a swept mesh (after meshing one of the faces) or by using the transition boundary condition.

By "error" I think you mean difficulty in meshing? A thin layer is best dealt with using a swept mesh (after meshing one of the faces) or by using the transition boundary condition.

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