Please click somewhere. As the migration grows, charge profile
changes. It seems as if the anode moves inside the resin towards the cathode.
Some might say that the positive charges are 'injected' from the anode.
But there is an experimental evidence that the area was full of copper. Thus we
think that the area near the anode must have been very conductive. The phenomena
here were rather different from 'charge injection and transport' in academic