DocumentCode :
230744
Title :
Thermal field forming of spindt cathode arrays
Author :
Spindt, Capp ; Holland, Christopher ; Schwoebel, Paul
Author_Institution :
Sensor Syst. Lab., SRI Int., Menlo Park, CA, USA
fYear :
2014
fDate :
6-10 July 2014
Firstpage :
149
Lastpage :
150
Abstract :
This paper describes observed changes in the emission from a 100-tip Spindt cathode array operated at peak emission levels that produced Joule heating and temperatures sufficient to cause surface self-diffusion at the tips. This well-known thermal field forming effect can produce blunting or sharpening of the emitter tips, depending on whether the thermal self-diffusion, or the field-assisted thermal diffusion dominates. A Fowler/Nordheim analysis of the emission produced the unexpected result that tip sharpening had occurred.
Keywords :
cathodes; electron field emission; self-diffusion; thermal diffusion; 100-tip Spindt cathode array; Fowler-Nordheim analysis; Joule heating; Joule temperatures; emitter tip blunting; emitter tip sharpening; field-assisted thermal diffusion; peak emission levels; surface self-diffusion; thermal field forming; thermal self-diffusion; Cathodes; Spindt cathode; field emission arrays; thermal field forming;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2014 27th International
Conference_Location :
Engelberg
Print_ISBN :
978-1-4799-5306-6
Type :
conf
DOI :
10.1109/IVNC.2014.6894822
Filename :
6894822
Link To Document :
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