Influence of tip geometry on the spatial resolution of tip enhanced Raman mapping

Zhang Chao¹, Chen Bao-Qin², Li Zhi-Yuan^{1, †,}

The dependence of the scanning resolution on the tip apex radius and the molecule height considering the molecule self-interaction, where the molecular polarizability β = 1–10 β₀. (a) The molecule locates at height r_z = 1 nm. (b) The tip apex radius is 10 nm.