I've been studying the changes in capacitance (presumably due to fringe capacitance) as a parallel plate capacitor discharges.
The data is entirely as I would expect, excluding the last few data points, which were taken at voltages less than two mV. The capacitance shows exponential decay until the roughly 2 mV point is reached; after this point, the capacitance increases rapidly.
V = V(initial)*e^(t/RC)
The Attempt at a Solution
My primary speculation is that this anomaly is related to the resistor (5G ohm) and the low voltage.
Any suggestions would be appreciated.