I am trying to calculate the forces in a system with a mix of conductive + dielectric components upon application of an AC potential. Frequencies are low enough that I need not consider magnetic field effects. I can solve equations to obtain the electric field, but at am a loss for force calculations. I am familiar with calculating the Maxwell stress tensor in purely capacitative systems. It is unclear to me whether I should be somehow incorporating conductivity as part of a complex dielectric constant and using this in the Maxwell stress tensor calculation or I should just use the regular dielectric constant.(adsbygoogle = window.adsbygoogle || []).push({});

If someone could suggest how I would go about this, even for a parallel plate system filled with a material with uniform conductivity and permittivity, I am sure I could carry it forward. I have looked through a number of basic textbooks, but find nothing to help me, but if anyone can refer me to one which answers my query I would be equally glad.

Many thanks,

Martin

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# Electrostatic force calculations

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