METHOD FOR THE CREATION OF PLANAR VARIATIONS IN SIZE OR DISTANCE IN NANOSTRUCTURE PATTERNS ON SURFACES
First Claim
1. A method for variation of sizes or distances in patterns of nanostructures on a substrate, comprisinga) contacting a substrate with a liquid phase that contains micelles of an organic two-block- or multi-block copolymer, said micelles being charged with an inorganic metal compound, by immersion into the liquid phase, during which chemically different polymer domains comprising metal compounds enclosed in micelles are deposited on the substrate;
- b) withdrawing of the substrate from the liquid phase at a predetermined withdrawing speed, which withdrawing speed is varied continuously or gradually, so that a Igradient of a lateral separation length of the polymer domains is produced on a substrate surface;
c) conversion of the metal compounds in the deposited polymer domains by an oxidation- or reduction treatment into inorganic nanoparticles and optionally complete or partial removal of the organic copolymer by a plasma treatment, wherein positions and a lateral separation length of the nanoparticles obtained are determined by positions and a lateral separation length of the deposited polymer domains.
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Abstract
A method for creating extensive variations in size or distance in nanostructure patterns on surfaces preferably includes: a) contacting a substrate with a liquid phase containing organic two-block or multi-block copolymer micelles, which are charged with an inorganic metal compound, by immersion into this liquid phase, during which chemically different polymer domains including inorganic metal compounds enclosed in micelles are deposited on the substrate; b) withdrawing the substrate from the liquid phase at a predetermined withdrawing speed, which is varied continuously or gradually, so that a gradient of the lateral separation length of the polymer domains is produced on the substrate surface; c) converting the deposited inorganic metal compounds by an oxidation- or reduction treatment into inorganic nanoparticles and optionally complete or partial removal of the organic polymer by a plasma treatment, wherein positions and lateral separation length of the nanoparticles obtained are determined by those of deposited polymer domains.
22 Citations
23 Claims
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1. A method for variation of sizes or distances in patterns of nanostructures on a substrate, comprising
a) contacting a substrate with a liquid phase that contains micelles of an organic two-block- or multi-block copolymer, said micelles being charged with an inorganic metal compound, by immersion into the liquid phase, during which chemically different polymer domains comprising metal compounds enclosed in micelles are deposited on the substrate; -
b) withdrawing of the substrate from the liquid phase at a predetermined withdrawing speed, which withdrawing speed is varied continuously or gradually, so that a Igradient of a lateral separation length of the polymer domains is produced on a substrate surface; c) conversion of the metal compounds in the deposited polymer domains by an oxidation- or reduction treatment into inorganic nanoparticles and optionally complete or partial removal of the organic copolymer by a plasma treatment, wherein positions and a lateral separation length of the nanoparticles obtained are determined by positions and a lateral separation length of the deposited polymer domains. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19, 20, 21, 22, 23)
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- 12. A method for producing nanoparticles with a laterally variable size on a substrate surface, wherein a polymer film containing at least one inorganic metal compound is deposited on a substrate surface and is then irradiated with a light field laterally intensity-modulated in an extensive area, as a result of which the metal compound is reduced and converted into nanoparticles and the size of the nanoparticles at a certain position of the substrate surface is a function of an intensity of the light field at the position.
Specification