• Should be cataphoresis (the movement of suspended particles through a fluid or gel under the action of an electromotive force applied to electrodes in contact with the suspension).
    But you should rather have started a new line instead of asking irrelevant questions in this one.
    Firstly, you greatly diminish your chances to get an answer because many people ignore threads with plenty of replies.
    Secondly, you make it harder for us all to search in this Forum.

    Anyway, I hope my reply helps.