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Interfacial mixing during annealing of zinc oxide nanoparticle junctions
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View: Figures


Image of FIG. 1.
FIG. 1.

Calculated melting temperature of ZnO NPs as a function of particle size. The dashed line is the computed bulk melting point.

Image of FIG. 2.
FIG. 2.

(a) Left: schematic of two NPs in contact; middle: contact radius determination based on the projection of atoms–in-contact on the interfacial plane; right: interface width determination from the left and right gyration distance. Color code: yellow and cyan: Zn, blue and red: O. For black and white print, large light circles: Zn, small dark: O. (b) Enhancement ratio of the contact radius and interface width for different sets of ZnO NPs annealed in liquid tetradecane. Filled symbols refer to the contact radius; open symbols indicate the interface width. ▲, △ 1.6/3.0 nm particle pair with same orientation; ◻, ◼ 1.6/3.0 nm particle pair with the small particle rotated 90° along the y-direction; ◆, ◇ apply to the 3.0/3.0 nm pair.

Image of FIG. 3.
FIG. 3.

Crystallized configurations of joined ZnO NPs heated in liquid tetradecane at the indicated heat pulse powers. Each structure is shown in the [0001] projection. The arrows indicate the close-packed plane of the HCP structure. [(a)–(d)]: pair;, [(e)–(h)]: pair. Pulse power (in mW): (a) 0, (b) 0.28, (c) 0.56, (d) 0.97, (e) 0, (f) 1.67, (g) 2.22, (h) 3.61. Same color code as Fig. 2.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interfacial mixing during annealing of zinc oxide nanoparticle junctions