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Does anyone know an equation/approximation/model or other to estimate the capacitance between two coplanar (adjacent) plates?

I know that for parallel plates: C = E0*Er*(A/d). I also know that the capacitance decrease as the plates move from a parallel to a coplanar geometry as the electric field becomes non-uniform.

I have been modelling parallel plates using a Boundary Element Method - I was wondering whether such a method would hold for a coplaner geometry?

Any help or thoughts would be much appreciated!

Regards

Tom

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# Capacitance of coplaner (adjacent) plates

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