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Field emission microscopy study of zinc oxide nanowires on tungsten tip
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10.1116/1.3079650
/content/avs/journal/jvstb/27/2/10.1116/1.3079650
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/27/2/10.1116/1.3079650
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Figures

Image of FIG. 1.
FIG. 1.

SEM images of the ZnO nanowires on W tips. (a) The ZnO nanowires with hexagonal end facets (the inset shows the existence of small tips on the end facets); (b) the electron diffraction pattern; (c) the nanowires after heating. (The scale bars in (a), (c), and the inset of (a) are 10, 1, and , respectively.)

Image of FIG. 2.
FIG. 2.

FEM patterns from the ZnO nanowires on a W tip. [(a), (c), and (d)] The W tip was tilted to the left; (the voltages were 1.05, 1.01, and , respectively). (e) the W tip was tilted to the right; (the voltage was ). [(b) and (f)] The relative position of the W tip to the screen. (The size of the W tip compared to the screen has been greatly exaggerated.)

Image of FIG. 3.
FIG. 3.

Normalized electric fields around the (0001) facet of a ZnO nanowire by simulation.

Image of FIG. 4.
FIG. 4.

behaviors of the ZnO nanowires on a W tip. Curves 1, 2, and 3 were obtained before any heat treatment, after the first heat treatment and after the second heat treatment, respectively. (a) the behavior; (b) the FN plots.

Image of FIG. 5.
FIG. 5.

FEM patterns respectively obtained before and after the new heat treatment. (a) Before any heat treatment (the voltage was .); [(b)–(g)] after the first heat treatment (The voltages were 0.96, 1.04, 1.07, 1.10, 1.11, and , respectively); (h) after the second heat treatment (the voltage was ).

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/content/avs/journal/jvstb/27/2/10.1116/1.3079650
2009-03-27
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Field emission microscopy study of zinc oxide nanowires on tungsten tip
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/27/2/10.1116/1.3079650
10.1116/1.3079650
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