As plastic moves by wool (or similar electron donor) it collects electrons. When the plastic nano bead randomly passes by metal conductor, it causes electricity since the electrons move to ground. This electricity can be captured in a capacitor. The capacitor is not mandatory as the device could simply produce a spark to ground. The capacitor is shown in order to see how electricity would be trapped over time for use later.
Since the nano magnets in the fluid are affected by brownian motion, they transfer vibrations to attractive magnets isolate in a separate enclosure, which are plastic coated and electrostatic drag occurs (random charges are generated) due to the wool (electron donor). Wool need not be used if another material is more convenient or gives up electrons easier. Wool is simply used as a familiar example of an electron donor.
To prevent the nano magnets from clumping together, one can place spacer beats between which are pure plastic, not magnetic.
"Though wise men at their end know dark is right, Because their words had forked no lightning they Do not go gentle into that good night." --Dylan Thomas