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Patterned growth of ZnO nanorods by micromolding of sol-gel-derived seed layer
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic illustration of the experimental procedure. (b) Scanning electron microscope (SEM) image of patterned ZnO seed layer [initial thickness ] over a large area after annealing at for . (c) SEM image of line-patterned seed layer. The inset is a magnified image of the spherelike seed particle. (d) SEM image of the patterned ZnO nanorods grown on the patterned seed layer with inset for the top-view FESEM image of the hexagonal facets of the resultant ZnO nanorods.

Image of FIG. 2.
FIG. 2.

(a) Schematic illustration of the micromolding of the sol-gel-derived seed layer during the drying process. (b) Relationship between the effective number density of the seed particles confined in the mold, , and the radius of the seed particles, , with different values of before sol-gel transition. When is smaller than the critical value of the radius , is equal to .

Image of FIG. 3.
FIG. 3.

(a) SEM image of the patterned ZnO nanorods on the micromolded seed layer after hydrothermal process at for . Magnified images are shown in (b) and (c). (d) Lattice-shape patterned nanorods of of defined pattern with regular square spacing of . (e) TEM image of an individual ZnO nanorod showing growth orientation along [0002] direction ( axis) with its SAED pattern (Inset). (f) XRD pattern of the patterned ZnO nanorods.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Patterned growth of ZnO nanorods by micromolding of sol-gel-derived seed layer