Electricity-induced switchable wettability and controllable water permeation based on 3D copper foam

A novel and simple method to realize the switch between superhydrophobicity and superhydrophilicity on a (N-dodecyltrimethoxysilane)-modified 3D copper foam by electrode processes is reported. Such electricity-induced switchable wettability with rapid responsiveness and wide-range variation can be applicable in controllable water permeation and other relevant areas.