CAPILLARITY-ASSISTED, MASK-LESS, NANO-/MICRO-SCALE SPRAY DEPOSITION OF PARTICLE BASED FUNCTIONAL 0D TO 3D MICRO- AND NANOSTRUCTURES ON FLAT OR CURVED SUBSTRATES WITH OR WITHOUT ADDED ELECTROCAPILLARITY EFFECT

摘要

The invention pertains to a method for the production of ID, 2D and/or 3D depositions (37, 38) from a nano-particle loaded liquid (34, 35) by means of a capillary (2) for holding the liquid with a backside section (16) and a smaller diameter tip section (15) located below said backside section (16), wherein the inner diameter the essentially cylindrical tubular part of the tip section (15) is in the range of 50nm - lμm, wherein the capillary (2) is provided with an outer electrode (5) on the outside of or integrated into the wall of the capillary (2) but isolated with respect of the liquid in the capillary (2) and wherein there is a counter electrode (1) in or on a substrate, including the steps of: i) keeping the outer electrode (5) and the counter electrode (6) on an essentially equal potential; ii) establishing a potential difference between the outer electrode (5) and the counter electrode (6) leading to the ejection of a drop (13) or stream from the tip (3) of the tip section (15) of the capillary (2); iii) movement of the opening (32) of the tip section (15) along a pathway as a function of time, wherein said nano-particles are non-charged.