FIGURE 3.

(A) Schematic of metal‐assisted exfoliation of graphene directly from the SiC surface with an adhesive‐strained Ni layer. (B) Schematic of the method for removing double‐layer stripes from the exfoliated graphene with a second adhesive‐strained Au layer. Reproduced with permission.^{[ 84 ]} Copyright 2013, American Association for the Advancement of Science. (C) Schematic of the layer‐engineered large‐area graphene exfoliation technique. (D) Schematic of the spalling path depending on different metal films. (E) Height profile of the graphene edges prepared by the layer‐engineered exfoliation method with different metals. Reproduced with permission.^{[ 85 ]} Copyright 2020, American Association for the Advancement of Science