Fig. 2
From: Modifying graphene’s lattice dynamics by hot-electron injection from single gold nanoparticles
Mode frequency in the vicinity of a gold nanoparticle. a and b maps of the Raman shifts of the G and 2D Raman modes close to a spherical gold nanoparticle, respectively. The laser wavelength of 633 nm is in-resonance with the localized surface-plasmon absorption of the gold nanoparticle. The maps correspond to the intensity maps shown previously. The G mode exhibits a blue-shift, whereas the 2D mode exhibits a red-shift when approaching the gold nanoparticle position. c The profiles of the position-dependent Raman shift along the dashed lines of the two maps are depicted on the right. The size of the error bars corresponds to the standard error of the Lorentzian fit function applied to the corresponding Raman line. Note that the error bars are smaller than the symbol size
