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| 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 |
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| 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. |
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| 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 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | ED2017-44 Link to ES Tech. Rep. Archives: ED2017-44 |
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| Conference Information | |
| Committee | ED |
| Conference Date | 2017-10-26 - 2017-10-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| 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 |
| Keyword(7) | |
| Keyword(8) | |
| 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) |
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| Speaker | Author-1 |
| Date Time | 2017-10-27 09:30:00 |
| Presentation Time | 25 minutes |
| Registration for | ED |
| Paper # | ED2017-44 |
| Volume (vol) | vol.117 |
| Number (no) | no.267 |
| Page | pp.35-38 |
| #Pages | 4 |
| Date of Issue | 2017-10-19 (ED) |
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