▎ 摘　　要

NOVELTY - Epitaxial structure (S1) comprises: an epitaxial layer (104) defining a patterned surface; and a graphene layer (102) on the patterned surface of the epitaxial layer. USE - Used as epitaxial structure. ADVANTAGE - The epitaxial structure utilizes patterned graphene layer which is formed in a simple and cost manner and does not pollute the substrate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an epitaxial structure (S2) comprising: a first epitaxial layer defining a first surface and a second surface opposite to the first surface, where the first surface is a patterned surface; a first patterned graphene layer embedded on the first surface of the first epitaxial layer; a second epitaxial layer on the second surface of the first epitaxial layer; and a second patterned graphene layer sandwiched between the first epitaxial layer and the second epitaxial layer. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of process of growing the epitaxial layer on a substrate. Graphene layer (102) Epitaxial layer (104) Apertures (105) Groove (1043) Epitaxial film (1044)