I know this formula. This formula is a flat capacitor.
А flat capacitor contains two electrodes.
( areaCap metal1 1.4e-4 )
1 electrode - metal1
2 electrode - ?
This formula is valid if the relative dielectric constant
of the medium between the electrodes - is constant.
How to calculate the capacitance of the structure:
metal1 -- silicon oxide- - silicon nitride -- metal2, etc?
How fab foundry have derived and measured such coefficient (areaCap)?