Atomically thin mica flakes and their application as ultrathin insulating substrates for graphene

Abstract

We show that it is possible to deposit, by mechanical exfoliation on SiO2/Si wafers, atomically thin mica flakes down to a single monolayer thickness. The optical contrast of these mica flakes on top of a SiO2/Si substrate, which depends on their thickness, the illumination wavelength and the SiO2 substrate thickness, can be quantitatively accounted for by a Fresnel law based model. The preparation of atomically thin insulating crystalline sheets will enable the fabrication of ultrathin defect-free insulating substrates, dielectric barriers or planar electron tunneling junctions. Additionally, we show that few-layer graphene flakes can be deposited on top of a previously transferred mica flake. Our transfer method relies on viscoelastic stamps, as those used for soft lithography. A Raman spectroscopy study shows that such an all-dry deposition technique yields cleaner and higher quality flakes than conventional wet-transfer procedures based on lithographic resists.

11 pages, 5 figures, 1 graphical abstract

References in corpus (15)

• Electric Field Effect in Atomically Thin Carbon Films
• Two Dimensional Atomic Crystals
• Boron nitride substrates for high-quality graphene electronics
• The structure of suspended graphene sheets
• Anomalous Lattice Vibrations of Single and Few-Layer MoS2
• Making graphene visible
• Hunting for Monolayer Boron Nitride: Optical and Raman Signatures
• Rayleigh Imaging of Graphene and Graphene Layers
• Anomalies in thickness measurements of graphene and few layer graphite crystals by tapping mode atomic force microscopy
• Visibility of dichalcogenide nanolayers
• Intrinsic and extrinsic corrugation of monolayer graphene deposited on SiO2
• Optical identification of atomically thin dichalcogenide crystals
• Colors Of Graphite On Silicon Dioxide
• The environment of graphene probed by electrostatic force microscopy
• Evidence for Strain-Induced Local Conductance Modulations in Single-Layer Graphene on SiO2

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