Figure 3.

Field emission properties of silicon tips. (a) Current density-electrical field curves of silicon tips. Inset shows the SEM image of the nanotip array during field emission measurement. The top electrode is tungsten probe. (b) Fowler-Nordheim plot of silicon tips.

Wu et al. Nanoscale Research Letters 2012 7:120   doi:10.1186/1556-276X-7-120
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