Figure 4

Top views of charge density distributions of (a) HOMO and (b) LUMO of inner ZnO nanowires, (c) HOMO and (d) LUMO of complex ZnO@(9, 9) CNT structure.

Top views of charge density distributions of (a) HOMO and (b) LUMO of inner ZnO nanowires, (c) HOMO and (d) LUMO of complex ZnO@(9, 9) CNT structure.