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Figure 2 | Nanoscale Research Letters

Figure 2

From: Tapered ZnO Whiskers: {hkil}-Specific Mosaic Twinning VLS Growth from a Partially Molten Bottom Source

Figure 2

Optical micrographs of Zn/W-ZnO samples via PLA deposition and/or annealing:a as-deposited on glass showing irregular-shaped Zn plumes and micron-sized Zn particulates (opaque) overlaid with hardly resolved W-ZnO nanocondensates (cf. SEM image in Fig. 3a);b further annealed sample showing significantly coarsened Zn particulates with blurred outline due to tapered W-ZnO whiskers (arrow) radiating from them (cf. SEM image in Fig. 3b);c blank Zn plate annealed without forming W-ZnO whiskers;d Zn plate with Zn/W-ZnO deposit via PLA and further annealed, showing W-ZnO whiskers (arrow) were developed from Zn particulates overlaid with W-ZnO condensates. Note:a andb were taken under transmission plane polarized light, whereasc andd under reflective light

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