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Electric potential of a metallic nanowall between cathode and anode planes

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3 Author(s)
Qin, Xizhou ; State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China ; Wang, Weiliang ; Li, Zhibing

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The electric field around a nanowall that is vertically mounted on a planar cathode is studied. The system is designed as a cold field electron emitter or an electron tunneling line scanner. Exact expressions for the electric potential and the edge field enhancement factor are obtained for arbitrary cathode-anode distances. It is found that the finite distance correction is significant for the cathode-anode distances less than twice the height of the nanowall. The angle-dependent transmission probability implies that the forward emission is dominant.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:29 ,  Issue: 3 )