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IrO 2

IrO 2

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Field emission J-E curve of <strong>IrO</strong> 2 nanorods (II)<br />

For <strong>IrO</strong> 2 nanorods,<br />

the lowest field<br />

to drive the emission<br />

(E thr ) at 0.7 V/μm<br />

The best values of<br />

carbon nanotube<br />

E thr = 0.6 ~ 0.8 V/μm,<br />

N-doped diamond film<br />

E thr ~ 0.5 V/μm<br />

amorphous carbon film<br />

E thr = 3 ~ 5 V/μm

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