Figure 4.

a Field emission I-E curve of the ITO-coated VANA measured under a vacuum of 1.59 × 10−5 torr. b Corresponding F–N curve obtained from I-E curve. c Field emission current stability of ITO-coated VANA at 1.59 × 10−5 torr

Lee et al. Nanoscale Research Letters 2010 5:1128-1131   doi:10.1007/s11671-010-9613-2