Nanoporous graphene membrane
AssigneeOstia Technologies Limited
InventorKa Wai Wong
Life of this patent
Estimating the term…
Abstract
A nanoporous graphene membrane fabrication method is formed using an array of sacrificial nanopillars of removable materials are printed onto a substrate, and subsequent growth of graphene. After serial deposition of overlayers of even dissimilar nature, the sacrificial nanostructures are dissolved, leaving nanoporous graphene membrane with nanopores, channels and cavities of nanoscale dimension and geometry designed and controlled, enabling untapped and unique functions in different technological areas such as filtration, electronics, and molecular sensors.
Claims14
A method for fabrication of a nanoporous graphene membrane, comprising:
- printing nanopillars of a removable material on a substrate;
- growing a graphene layer on the substrate to surround and contact side surfaces of the nanopillars, an uppermost surface of the graphene layer being at a lower level than uppermost surfaces of the nanopillars and a lowermost surface of the graphene layer being at a same level as lowermost surfaces of the nanopillars;
- and
- removing the nanopillars and the substrate to produce the nanoporous graphene membrane,
- wherein the nanopillars have a diameter in a range from 1 nm to 1000 nm, and a height in a range from 100 nm to 10,000 nm, and
- wherein the nanopillars have at least one of a cylindrical shape and a conical shape.
Dependencies are inferred from the claim text.