Patent ID: 11932929
Assignee: nan
Field: Surface technology, coating (Chemistry)
Classification: CPC C  D | IPC C

Claim 4:
5. A method for deposition of patterns on surfaces by directed energy deposition of carbon, comprising the steps of:
selecting a pattern for deposition on a surface of a solid substrate;
providing a reaction mixture comprised of a deposit precursor, a directed electromagnetic radiation apparatus, said solid substrate, and a reaction vessel;
placing the substrate and reaction mixture in the form of a gas or liquid, which is absorbed or adsorbed to the substrate, into the reaction vessel;
selectively sending directed electromagnetic radiation towards the adsorbed or absorbed reaction mixture in the reaction vessel with the directed energy emission apparatus; and
causing a polymerization and/or decomposition reaction within the reaction mixture adjacent to a point of incidence of the directed energy emission on the surface of the substrate to produce a nonhomogeneous or nonuniform deposit layer having the selected pattern,
wherein directed energy is either a focused or collimated beam or a laser beam,
wherein the reaction mixture is comprised of a deposit precursor, which can be decomposed to form a deposit of carbon, and
further wherein the deposit precursor is a carbon-based polymerizable monomer or wherein said deposit precursor is a compound that can be decomposed in situ into said carbon based polymerizable monomer, wherein said carbon-based polymerizable monomer is induced to polymerize into an immobile deposit under the influence of directed energy and can be decomposed to carbon by continued application of directed energy or general heating, said carbon-based polymerizable monomer selected from:
(a) a group consisting of 1,1-dichloroethylene, its isomers, and its analogues, wherein said analogues comprising disubstituted ethylenes, wherein said disubstituted ethylenes further having an empirical formula of HCX, and further wherein X is a halide, hydroxide, or alkoxide, or
(b) said carbon-based polymerizable monomer generated in situ from 1,1,1-trichloroethane or hexachlorocyclohexane,
and further wherein either prior to or concomitant with the selectively sending directed electromagnetic radiation step said 1,1,1-trichloroethane or said hexachlorocyclohexane is converted into said carbon-based polymerizable monomer.