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Calculate Resistance of a material surrounded by a metal
Posted Jul 7, 2017, 9:12 a.m. EDT 1 Reply
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I have some doubts.
>> If we have a material (suppose ZnO) and both sides metal (suppose Al). So how can i calculate the resistance for that material. When i have tried i found some problems like for ZnO (Tangent coefficient of thermal expansion, isotropic tangent coefficient of thermal expansion, electrical conductivity, relative permittivity).
>> and can we see the 2D plot of that calculated resistance with temperature (Like 0degC to 80degC).
I have taken help from following link, but it didn't help me for my model wizard. (www.comsol.co.in/model/computing-the-resistance-of-a-wire-12697)
I have attached a simple 3d structure of my model.
Please help me to perform this task.
>> If we have a material (suppose ZnO) and both sides metal (suppose Al). So how can i calculate the resistance for that material. When i have tried i found some problems like for ZnO (Tangent coefficient of thermal expansion, isotropic tangent coefficient of thermal expansion, electrical conductivity, relative permittivity).
>> and can we see the 2D plot of that calculated resistance with temperature (Like 0degC to 80degC).
I have taken help from following link, but it didn't help me for my model wizard. (www.comsol.co.in/model/computing-the-resistance-of-a-wire-12697)
I have attached a simple 3d structure of my model.
Please help me to perform this task.
Attachments:
1 Reply Last Post Jul 7, 2017, 10:35 a.m. EDT
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Posted:
7 years ago
If you enter the electrical resistivity and permittivity the model will run.
If you DON'T know these- well, you will have to get them from measurement or from the literature.
COMSOL has a great many material parameters included but not all. ZnO will be particularly complicated because (1) it is a semiconductor and (2) it is usually polycrystalline making its bulk properties dependent on grain size and (3) it might have defects that depend on processing.
D.W. Greve
DWGreve Consulting
If you DON'T know these- well, you will have to get them from measurement or from the literature.
COMSOL has a great many material parameters included but not all. ZnO will be particularly complicated because (1) it is a semiconductor and (2) it is usually polycrystalline making its bulk properties dependent on grain size and (3) it might have defects that depend on processing.
D.W. Greve
DWGreve Consulting