Nothing prevents you from defining a sphere of whatever dimension you need (I guess you are talking about FastCap2). As a matter of fact, FastCap2 does not need you to specify the units, since capacitance scales linearly with the dimension.
However, please consider the limits of FastCap2: it calculates a quasistatic solution of the Maxwell equations, so no quantistic effects, no finite speed of light (interactions are assumed istantaneous).
Best Regards,
Enrico
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nanocrystal design ?
Posted - Jan 07 2010 : 12:29:22
