AEROSOL PRINTER WITH CHARGING AND ELECTROSTATIC FOCUSING OF OPTIMIZED PARTICLES Russian patent published in 2025 - IPC B03C3/00 

FIELD: printing.

SUBSTANCE: aerosol printer with charging and electrostatic focusing of optimized particles. Device is based on synthesis of particles by spark ablation, their optimization (sintering) in a tubular furnace or in a laser-optical sintering device, unipolar charging in corona discharge and electrostatic focusing in non-uniform field through centres of holes in focusing electrode. When the carrier gas is supplied to the input of the spark discharge generator at the moment of spark occurrence, the electrode material is ablated, which leads to the formation of agglomerates of particles, which are supplied to the optimizer, which is realized in the form of a tubular furnace or a laser optimizer, as a result of which they are transformed into spherical particles. Further, particles are supplied to the input of the charger, inside which they pass through the corona discharge region and receive an electric charge. After that, particles are supplied to printing chamber, in which they are trapped by electric field created by three electrodes: guiding, focusing and attracting. Geometry of the field is formed so that charged particles pass through the centres of the holes in the focusing electrode and are deposited on the attracting electrode (substrate). Proposed device enables to achieve high printing speed due to high efficiency of the generator, to obtain structures from separate particles with a controlled average size. Different 2D/3D patterns can be achieved by moving the substrate on the coordinate table. Device is realized by making a test bench consisting of a spark discharge generator, an optimizer, a charging device and a printing chamber, as well as by providing practical results of the device operation.

EFFECT: aerosol printer can be used to produce micro- and nanostructures with high resolution and high aspect ratio, such reduction of width is necessary for creation of arrays of grids of electrodes for LED-panels, optical metamaterials, optoelectronic devices, transparent heaters and 3D-interconnections.

3 cl, 4 dwg