Figure 1.

SEM images and schematic diagram. SEM images for (a) P-silicon nanotip [P-SiNT] arrays, (b) tungsten [W]-probe anode and a single P-SiNT emitter, and (c) W-plate anode and P-SiNT emitters' array, forming a field emission [FE] nanodiode. Schematic diagram for (d) FE microdiodes, (e) FE nanodiode with W-probe anode, and (f) FE nanodiodes with W-plate anode.

Cheng et al. Nanoscale Research Letters 2012 7:125   doi:10.1186/1556-276X-7-125
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