Fig. 3From: Quantum-Chemical Calculation and Visualization of the Vibrational Modes of Graphene in Different Points of the Brillouin ZoneRaman spectrum of single-layer graphene on a substrate of copper foil (D-mode = 1314 cm−1, G-mode = 1581 cm−1, 2D-mode = 2621 cm−1, 2D′-mode = 3232 cm−1). Mode at 621, 521, 216, and 147 cm−1 corresponds to a copper foil substrate (100 % power laser 10 mW excitation at wavelength 0.63 microns)Back to article page