Extended Data Fig. 5: Optical contrast of multilayer graphene. | Nature Nanotechnology

Extended Data Fig. 5: Optical contrast of multilayer graphene.

From: Layer-controlled single-crystalline graphene film with stacking order via Cu–Si alloy formation

Extended Data Fig. 5

a–d, Optical images of monolayer, bilayer, trilayer, and tetralayer graphene islands on SiO2/Si. The inset in each image depicts the optical contrast profile across the dashed line. e, Contrast difference of different graphene layers. The optical contrast difference increases linearly from panels (a)(d), with the number of graphene layers.

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