The invention provides a miniaturized multi-
electrode spray head structure and a control method, and relates to the technical field of electrohydrodynamic printing. By introducing a multi-
electrode printing
electrode group consisting of a focusing electrode, an accelerating electrode and a deflecting electrode, independent and fine regulation and control on formation, acceleration and deflection of ink droplets are realized.
Constant voltage is applied to the focusing electrode, ink can be promoted to stably form a
Taylor cone at an outlet of the
nozzle, and the problem that the
Taylor cone is formed unstably due to uneven
electric field distribution of an existing single-electrode
nozzle is solved. The accelerating electrode applies a preset
pulse electric field, liquid at the tip of the
Taylor cone can be stretched into
jet flow and broken into submicron liquid drops,
kinetic energy is provided for the liquid drops at the same time, and the submicron printing resolution is achieved. The deflection electrode applies a transverse electrostatic field, the spraying direction of the liquid drops can be independently changed, and the problems that an existing single-electrode
sprayer is single in
electric field control means, the deposition track of the liquid drops cannot be independently regulated and controlled, and consequently the
flight track of the liquid drops is unstable and the positioning error is large are solved.