Computer simulation of electric field analysis for vertically aligned carbon nanotubes (2): electric field on the nanotube apex

Hiroshi Shimoyama; Hidekazu Murata; Toshimi Ohye

doi:10.1117/12.451276

21 December 2001 Computer simulation of electric field analysis for vertically aligned carbon nanotubes: II. Electric field on the nanotube apex

Hiroshi Shimoyama, Hidekazu Murata, Toshimi Ohye

Author Affiliations +

Proceedings Volume 4510, Charged Particle Detection, Diagnostics, and Imaging; (2001) https://doi.org/10.1117/12.451276
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Vertically-aligned carbon nanotubes (VA-CNT) are extremely attractive for use as field emission sources. The field emission characteristics of VA-CNTs are determined by the electric field strength on the CNT apexes, and therefore depend strongly on the geometrical parameters such as radius of curvature of the CNT apex, an average density of CNTs and non-uniformity of CNT lengths. This paper describes a computer simulation of electric field analysis for VA-CNTs by means of an improved 3D boundary charge method, where the VA-CNTs are modeled by 9X9 CNTs standing vertically on the cathode substrate. We have calculated the electric field strength on the CNT apex for various geometrical parameters of VA-CNTs. It has been found that the electric field on the CNT apex is inversely proportional to the radius of curvature of the CNT apex, and significantly decrease when the CNT density exceeds 10⁰/cm².

Citation Download Citation

Hiroshi Shimoyama, Hidekazu Murata, and Toshimi Ohye "Computer simulation of electric field analysis for vertically aligned carbon nanotubes: II. Electric field on the nanotube apex", Proc. SPIE 4510, Charged Particle Detection, Diagnostics, and Imaging, (21 December 2001); https://doi.org/10.1117/12.451276

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available