Title :
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
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;
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
DOI :
10.1109/IVELEC.2009.5193443
