▎ 摘　　要

NOVELTY - The method involves alternately dipping substrate into the solution with positive electric polymer and the graphene oxide solution under the ultrasonic bath environment, and the polymer dielectric layer and the magnesium oxide layer are alternately deposited by electrostatic self-assembly. USE - Method for water bath ultrasonic in graphene ultra-material film layer by layer self-assembly. ADVANTAGE - The method uses ultrasonic water bath to prevent the GO nano sheet from gathering on the surface of the base plate in the solution, in addition, after each 3-10 times of coating period, GO solution is processed by high power ultrasonic rod for ultrasonic treatment. In this way, the thickness of each layer and the flatness of the surface can be controlled well. Therefore, the quality of coating graphene super-material film can be greatly improved, suitable for wide application, especially optical application. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the Method for water bath ultrasonic in graphene ultra-material film layer by layer self-assembly.