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Emission current density vs field characteristics for different laser treatments.
FN plot of CNT emitters treated by different methods.
Emission patterns with (a) no laser treatment and (b) laser treatment at with an applied electric field of .
SEM images of CNT powders with (a) no laser treatment and laser treatment at (b) , (c) , and (d) plus annealing at in air for .
Turn-on electric field stability for no laser treatment and laser treated samples at 45 and .
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