Tungsten Nanotip Cathode

Low turn-on in vacuum nanogaps

This tungsten nanotip cathode exhibits exceptionally low turn-on electric fields in vacuum nanogaps, far below those reported for larger gaps.

Li, Yimeng · Fuzhi, Zhan · Jia, Tang · Cheng, Yonghong · Meng, Guodong

2023

Specifications

in nm gap

{'zh': '4', 'en': '4'} V/nm

in nm gap

{'zh': '5', 'en': '5'} V/nm

in nm gap

{'zh': '8', 'en': '8'} V/nm

Advantages

Field enhancement factor less than 1 when R>>d