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Paper Abstract and Keywords
Presentation 2017-10-27 09:30
Ab initio calculations of field emission from carbon emitters on the basis of time-dependent density functional theory (Ⅲ)
Toshiharu Higuchi, Masahiro Sasaki, Yoichi Yamada (Univ. of Tsukuba) ED2017-44 Link to ES Tech. Rep. Archives: ED2017-44
Abstract (in Japanese) (See Japanese page) 
(in English) To clarify the origin of the superior field emission characteristics of carbon emitters, we have estimated the emission current by ab initio simulations. We adopted the time-dependent density functional theory (TD-DFT) method for calculating the field emission from carbon nanotubes (CNTs) and hydrogen-terminated carbon nanotubes (H-CNTs).
We found that a calculated emission current was affected by the ramp-up time of the trapezoidal electric field. And this phenomenon was confirmed to be related to an electric dipole moment. This dipole moment grows larger so as to shorten the ramp-up time. It is important that the ramp-up time should be long to calculate more correct emission current.
Keyword (in Japanese) (See Japanese page) 
(in English) Field Emission / Work Function / ab initio Simulation / First Principle Calculation / Time-Dependent Density Functional Theory / Carbon Emitter / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 267, ED2017-44, pp. 35-38, Oct. 2017.
Paper # ED2017-44 
Date of Issue 2017-10-19 (ED) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF ED2017-44 Link to ES Tech. Rep. Archives: ED2017-44

Conference Information
Committee ED  
Conference Date 2017-10-26 - 2017-10-27 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To ED 
Conference Code 2017-10-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Ab initio calculations of field emission from carbon emitters on the basis of time-dependent density functional theory (Ⅲ) 
Sub Title (in English)  
Keyword(1) Field Emission  
Keyword(2) Work Function  
Keyword(3) ab initio Simulation  
Keyword(4) First Principle Calculation  
Keyword(5) Time-Dependent Density Functional Theory  
Keyword(6) Carbon Emitter  
1st Author's Name Toshiharu Higuchi  
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2nd Author's Name Masahiro Sasaki  
2nd Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
3rd Author's Name Yoichi Yamada  
3rd Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
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Date Time 2017-10-27 09:30:00 
Presentation Time 25 
Registration for ED 
Paper # IEICE-ED2017-44 
Volume (vol) IEICE-117 
Number (no) no.267 
Page pp.35-38 
#Pages IEICE-4 
Date of Issue IEICE-ED-2017-10-19 

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