US 2021/0229046 A1 · ULTRA-THIN, HIGH-POROSITY, TRACK-ETCHED MEMBRANES

Abstract

Systems and methods described herein may produce a modified substrate. A process for producing a modified substrate may include providing a substrate that is 5 microns or less in thickness, ion tracking the substrate, and etching the tracked substrate with an etchant to produce a plurality of pores in the substrate. In some implementations, the substrate may be a polymer. In some implementations, the ion tracking may include controlling a flux of ions passing through the substrate to achieve a desired pore density. In some implementations, the track-etching of the substrate may create a 10% or more porosity in the substrate. In some implementations, the process may further include using the track-etched substrate as a support substrate for at least one of a single-layer graphene film, multi-layer graphene film, stack of graphene films, nanostructure of graphene flakes, or nanostructure of graphene platelets.

Claims20

Dependent claims

A method for producing a modified substrate, comprising:

providing a polymer substrate that is 5 microns or less in thickness;
ion tracking the substrate, the ion tracking including controlling a flux of ions passing through the substrate to achieve a desired pore density;
etching the tracked substrate with an etchant to produce a plurality of pores in the substrate, the etching including controlling properties of the etching to achieve a desired pore size;
and
using the track-edged substrate as a support substrate for at least one of a single-layer graphene film, a multi-layer graphene film, a stack of graphene films, a nanostructure of graphene flakes, or a nanostructure of graphene platelets;
wherein the track-etching of the substrate creates a 10% or more porosity in the substrate.

3 more elements

Dependencies are inferred from the claim text.

Ultra-thin, high-porosity, track-etched membranes

Life of this patent

Ultra-thin, high-porosity, track-etched membranes

Life of this patent

Abstract

Claims20