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Accessing capacitance data

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I'm sure this is a silly question, but I haven't found a good answer. Absent of the AC/DC or MEMS module, using just electrostatics, is there a way to calculate the capacitance of an interdigitated capacitor? I have the model made and solved, I just can't figure out how to switch from showing electric potentials to outputting a number for the capacitance of the sensor. Everything I've read relies on the MEMS module and C11_emes. I could reformat the model for that module, but I was just curious if there was a way to do it with basic electrostatics.
Thanks

1 Reply Last Post 2010年11月15日 GMT-5 01:45
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 2010年11月15日 GMT-5 01:45
Hi

A capacitance is a geometrical driven feature (except for material "er") so once you have a geometry well defined you should be able to integrate it out from your model.
The capacitance changes will be more model and physics dependent though

--
Good luck
Ivar
Hi A capacitance is a geometrical driven feature (except for material "er") so once you have a geometry well defined you should be able to integrate it out from your model. The capacitance changes will be more model and physics dependent though -- Good luck Ivar

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