Figure 4
(a) TEM image of a WS2 nanotube. (b) Electron diffraction pattern from the tube presented in (a) and the splitting scheme of its diffraction spots. The top enlarged image shows cone series of the 110 reflection (Δ∊c ≃ 0.7°); the bottom enlarged image presents the splitting of the basal 003 reflection (cone semi-apex angle ∊b ≃ 0.2°). |