Porous graphene composite material supported by micropore and preparation method of material

Abstract

The invention discloses a preparation method of a graphene nano-hole which is supported by a micropore, belonging to the fields of application of heavy ion beams and processing of films. A porous graphene composite material supported by the micropore is mainly characterized by comprising monolayer graphene, wherein the monolayer graphene is arranged on a polymer film; a nanoscale hole is formed in the graphene, overlapped and communicated with a cone-shaped hole of the polymer film. Through the preparation method, a graphene/polymer film composite structure is irradiated by using high-energy heavy ions; a hole with the diameter being several nanometers is formed in the graphene by using irradiation damage effect of the heavy ions; meanwhile, a columnar damage area is formed in the polymer film; then an irradiated area of a polymer is etched to form a cone-shaped nano-hole by using a chemical etching method; since the position of the graphene hole is overlapped and communicated with the position of the cone-shaped hole of the polymer, the graphene nano-hole which is supported by the micropore can be obtained. Due to the support effect of the polymer micropore, the graphene nano-hole is wide in application prospet in rectification of the ions, filtration and screening of the ions and detection of biological molecules.

Description

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AI Technical Summary

Benefits of technology

This invention relates to methods that use specific materials called nanopores or microparticles to filter out certain substances like water vapor (H2O) at very low concentrations compared to other gases such as oxygen gas (O2). These filters are useful because they allow smaller particles to go deeper into their own cells without being blocked up too much. Additionally, these techniques provide precise control over how many times each particle needs to hit another cell's surface before blocking off any harmful compounds.

Problems solved by technology

This patented technical problem addressed in this patent relates to improving the efficiency at detecting tiny objects (such as minute charged drops) or other substances within nanoelectronics devices called field effect transistor (FET). Current techniques require expensive equipment like scanning tunneling microscopy and atomic force microscopes. However, these techniques may result in damage caused during transferring the object onto another surface due to their own weight. Therefore, new ways to create better quality graphene materials would improve electronic device manufacturing processes while reducing costs associated with existing technologies.

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