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Effect of MgO coating on field emission of a stand-alone carbon nanotube
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10.1116/1.2770740
/content/avs/journal/jvstb/25/5/10.1116/1.2770740
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/25/5/10.1116/1.2770740
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic configuration of FEM apparatus.

Image of FIG. 2.
FIG. 2.

SEM images of a CNT attached on a tungsten tip (a) before and (b) after MgO coating.

Image of FIG. 3.
FIG. 3.

Voltage-current curves of field emission from the CNT with and without MgO coating, respectively. The arrows show the turn-on and turn-off directions of the current during a voltage scanning cycle.

Image of FIG. 4.
FIG. 4.

Model of the simulation using finite element method.

Image of FIG. 5.
FIG. 5.

Distributions of the electric field and potential on the CNT before and after MgO coating calculated by a finite element method.

Image of FIG. 6.
FIG. 6.

FEM images of the emission patterns for the CNT (a) before and (b) after MgO coating.

Image of FIG. 7.
FIG. 7.

Fluctuations of emission current for the CNT before and after MgO coating at the emission level of (a) and (b) , respectively.

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/content/avs/journal/jvstb/25/5/10.1116/1.2770740
2007-08-15
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of MgO coating on field emission of a stand-alone carbon nanotube
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/25/5/10.1116/1.2770740
10.1116/1.2770740
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