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Graphene as a transparent conductive support for studying biological molecules by transmission electron microscopy
R. R. Nair, P. Blake, J. R. Blake +8
We demonstrate the application of graphene as a support for imaging individual biological molecules in transmission electron microscope (TEM). A simple procedure to produce free-st…
Hunting for Monolayer Boron Nitride: Optical and Raman Signatures
R. V. Gorbachev, I. Riaz, R. R. Nair +9
We describe the identification of single- and few- layer boron nitride. Its optical contrast is much smaller than that of graphene but even monolayers are discernable by optimizing…
From One Electron to One Hole: Quasiparticle Counting in Graphene Quantum Dots Determined by Electrochemical and Plasma Etching
S. Neubeck, L. A. Ponomarenko, F. Freitag +6
Graphene is considered to be a promising material for future electronics. The envisaged transistor applications often rely on precision cutting of graphene sheets with nanometer ac…
Fluorographene: Two Dimensional Counterpart of Teflon
R. R. Nair, W. C. Ren, R. Jalil +16
We report a stoichiometric derivative of graphene with a fluorine atom attached to each carbon. Raman, optical, structural, micromechanical and transport studies show that the mate…
Density of states and zero Landau level probed through capacitance of graphene
L. A. Ponomarenko, R. Yang, R. V. Gorbachev +4
We report capacitors in which a finite electronic compressibility of graphene dominates the electrostatics, resulting in pronounced changes in capacitance as a function of magnetic…
Spectroscopic ellipsometry of graphene and an exciton-shifted van Hove peak in absorption
V. G. Kravets, A. N. Grigorenko, R. R. Nair +4
We demonstrate that optical transparency of any two-dimensional system with a symmetric electronic spectrum is governed by the fine structure constant and suggest a simple formula…