Process for selective formation and differential growth of a new solid phase by electrochemical means. Application to image point matrices.

摘要

P The invention relates to a process for the selective formation and differential growth of a new solid phase in a selected fraction of the cells of a system comprising a multiplicity of electrolysis cells, in each of which one of the electrochemical reactions produced by the passage of an electric current in one of the directions implies the formation of said new phase, in which a voltage pulse known as a sensitization pulse greater than the electrolysis voltage threshold is applied to the selected cells, and subsequently, the same electrolysis voltage to all of the sensitized and non-sensitized cells the process allowing the formation and growth of the new phase in the only cells selected in the system and vice versa, the absence of formation and development of the new phase in cells not selected in the system. /P