Patent ID: 8431344
Filing Date: 2013-04-30
Classification: B01J,B82Y,H01L

Abstract:
1. A method of manufacture by micrometer and nanometer scale spatially selective deposition of chemical substances on a substrate, the method including the steps of: (a) defining at least one region on the substrate by forming an electrostatic charge on that region which is different from the electrostatic charge on other regions of the substrate, (b) applying an emulsion to the substrate, the emulsion including an electrically insulative non-aqueous continuous phase and an electrically charged discontinuous phase and a component to be selectively deposited carried in the discontinuous phase, the emulsion comprising a surfactant, the surfactant having a first part which is compatible with the non-aqueous continuous phase and a second part which is compatible with the discontinuous phase, the surfactant being selected to not significantly reduce the volume resistivity of the non-aqueous continuous phase, wherein the emulsion protects from both water and air, and (c) directing the discontinuous phase of the emulsion to the at least one region by attraction to or repulsion from the electrostatic charge on the region,