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US 9,057,639 B2Granted
Reduced graphene oxide film
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJeremy T. Robinson, Eric S Snow
Life of this patent
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Abstract
Spin coating a mixture of graphene oxide platelets, water, and an organic solvent by placing a drop of the mixture on a spinning substrate while blowing a drying gas onto the substrate and allowing the water and the organic solvent on the substrate to evaporate; and repeating the spin coating one or more times to form a graphene oxide film in contact with the substrate. An about 1-100 nm thick film of overlapping platelets of reduced graphene oxide.
Claims20
A method comprising:
- centrifuging a suspension of graphene oxide platelets and water to form a liquid and wet solids;
- removing the wet solids from the liquid;
- suspending the wet solids in an organic solvent to form a mixture;
- spin coating the mixture by placing a drop of the mixture on a spinning substrate while blowing a drying gas onto the substrate and allowing the water and the organic solvent on the substrate to evaporate;
- and
- repeating the spin coating one or more times to form a graphene oxide film in contact with the substrate.
3 more elements
A method comprising:
- providing a mixture of graphene oxide platelets, water, and an organic solvent;
- spin coating the mixture by placing a drop of the mixture on a spinning substrate while blowing a drying gas onto the substrate and allowing the water and the organic solvent on the substrate to evaporate;
- and
- repeating the spin coating one or more times to form a graphene oxide film in contact with the substrate;
- at least partially reducing the graphene oxide film;
- releasing the reduced graphene oxide film from the substrate;
- and
- placing the released film on a second contoured substrate such that portions of the film are suspended above the contoured substrate.
5 more elements
Dependencies are inferred from the claim text.