Patent ID: 8689726
Filing Date: 2014-04-08
Classification: B01D,B05D,D06M,Y10T

Abstract:
1. Apparatus for layer-by-layer film deposition on a charged surface of a substrate, comprising: a first reservoir configured to contain a first solution and in fluid communication with a first nozzle; a second reservoir configured to contain a second solution and in fluid communication with a second nozzle; a third reservoir configured to contain a rinsing fluid and in fluid communication with a third nozzle; and a vacuum pump configured to apply a vacuum behind the substrate and provide a forced pathway for droplets ejected from the first, second, and third nozzles, wherein: the first nozzle is configured to spray the first solution on said charged surface, thereby forming on said surface a first layer having a charge opposite the charge on said charged surface; the second nozzle is configured to spray the second solution on said first layer, thereby forming on said first layer a second layer having a charge opposite the charge of the first layer; the third nozzle is configured to spray the rinsing fluid toward said charged surface; and a source of gas is configured to pressurize the first reservoir, second reservoir, and third reservoir, wherein the source of gas is configured to affect the droplet size and flow rate emerging from the first, second, and third nozzles, and wherein the first solution comprises polyelectrolytes and the second solution comprises nanoparticles, and wherein the apparatus is configured to conformally coat the substrate.