Table 1

Field emission parameters and morphological sizes of the synthesized In 2O3 nanostructures
Characteristics r (nm) d (μm) β s
In2O3 nanoneedles 25 300 3,695 0.307
In2O3 nanohooks 50 300 1,770 0.295
In2O3 nanorods 62.5 300 1,374 0.286
In2O3 nanotowers 150 300 458 0.229

r, average radius of curvature at the tip; d, cathode–anode distance; β, field enhancement factor; s, factor evaluating the screening effect that derived from Equation 5.

Wang et al.

Wang et al. Nanoscale Research Letters 2014 9:111   doi:10.1186/1556-276X-9-111

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