▎ 摘　　要

NOVELTY - The method comprises forming a graphene layer on a substrate (5) to be measured, forming a liquid crystal layer on the formed graphene layer, and measuring the optical properties of the formed liquid crystal layer so as to visualize the domains and domain boundaries of graphene (10). The substrate includes glass, polymer and semiconductor materials. The graphene layer formation step comprises heat-treating the layer of the graphene to remove impurities at a temperature of 200-600 degrees C for 1-60 minutes after forming the layer of the graphene on the substrate. USE - The method is useful for visualizing optical domains of graphene (claimed). ADVANTAGE - The method can optically visualize the domains and domain boundaries of graphene in a simple, a time-saving, an inexpensive and an easy manner. DETAILED DESCRIPTION - The method comprises forming a graphene layer on a substrate (5) to be measured, forming a liquid crystal layer on the formed graphene layer, and measuring the optical properties of the formed liquid crystal layer so as to visualize the domains and domain boundaries of graphene (10). The substrate includes glass, polymer and semiconductor materials. The graphene layer formation step comprises heat-treating the layer of the graphene to remove impurities at a temperature of 200-600 degrees C for 1-60 minutes after forming the layer of the graphene on the substrate. The liquid crystal layer has a thickness of 300 nm to 100 mu m and optical properties measured using polarized light. The step of forming the liquid crystal layer step includes a drop-coating method, a spin-coating method, a low-temperature vapor deposition method, a method of injecting a liquid crystal into a sandwich cell, a doctor blade method, a paint brushing method, a spray-coating method, and a dip coating method. The liquid crystal layer is formed epitaxially rearranging liquid crystal molecules on a surface of the graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a method for optical visualization of graphene domains. Substrate (5) Graphene (10) Liquid crystals . (15)