Computational modeling of field enhancement in an individual carbon nanotube field emitter system

Author

Niemann, Darrell L. ; Ribaya, Bryan P. ; Gunther, Norman ; Leung, Joseph ; Rahman, Mahmud ; Nguyen, Cattien V.

Author_Institution

Dept. of Electr. Eng., Santa Clara Univ., Santa Clara, CA, USA

fYear

2009

fDate

28-30 April 2009

Firstpage

509

Lastpage

510

Abstract

In this work we investigate the effect of various structural geometry on the field enhancement factor of an individual carbon nanotube (CNT) field emitter. We employ a computational model, that has been experimentally verified, to investigate the influence of system component geometry. Our results show that, in certain cases, the influences of support length and anode-cathode separation distance are of comparable magnitude. Additionally, the effect of CNT radius dominates the system electrostatics as compared to other structural geometries, such as anode-cathode distance, the cathode structure supporting the CNT emitter and the length of the emitter.

Keywords

carbon nanotubes; field emission; CNT radius; anode-cathode separation distance; carbon nanotube field emitter system; field enhancement; system electrostatics; Carbon nanotubes; Computational geometry; Computational modeling; Electron emission; Electron guns; Electrostatics; Laboratories; NASA; Scanning electron microscopy; Solid modeling; CNTs; Carbon Nanotubes; Field Emission; MEMS; Microelectromechanical Systems; Modeling; Simulation; Single Emitter;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2009. IVEC '09. IEEE International

Conference_Location

Rome

Print_ISBN

978-1-4244-3500-5

Electronic_ISBN

978-1-4244-3501-2

Type

conf

DOI

10.1109/IVELEC.2009.5193443

Filename

5193443