| Presentation | 2017-10-27 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, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Field Emission / Work Function / ab initio Simulation / First Principle Calculation / Time-Dependent Density Functional Theory / Carbon Emitter |
| Paper # | ED2017-44 |
| Date of Issue | 2017-10-19 (ED) |
| Conference Information | |
| Committee | ED |
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| Conference Date | 2017/10/26(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kunio Tsuda(Toshiba) |
| Vice Chair | Michihiko Suhara(TMU) |
| Secretary | Michihiko Suhara(New JRC) |
| Assistant | Toshiyuki Oishi(Saga Univ.) / Tatsuya Iwata(TUT) |
| Paper Information | |
| Registration To | Technical Committee on Electron Devices |
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| Language | JPN |
| 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 |
| 1st Author's Affiliation | *(*) |
| 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) |
| Date | 2017-10-27 |
| Paper # | ED2017-44 |
| Volume (vol) | vol.117 |
| Number (no) | ED-267 |
| Page | pp.pp.35-38(ED), |
| #Pages | 4 |
| Date of Issue | 2017-10-19 (ED) |