Construction of 3D Arrays of Cylindrically Hierarchical Structures with ZnO Nanorods Hydrothermally Synthesized on Optical Fiber Cores

Figure 2

The 3D arrays of cylindrically hierarchical structures with different layers and nominal pitches. (a) Two layers, nominal pitch 250 μm. (b) Two layers, nominal pitch 375 μm. (c) Three layers, nominal pitch 250 μm. (d) Three layers, nominal pitch 375 μm.

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