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| Presentation | 2022-12-09 15:00 Ab initio calculations of field emission from carbon nanotubes based on time-dependent density functional theory Toshiharu Higuchi, Yoichi Yamada, Masahiro Sasaki (Tsukuba Univ.)  ED2022-67 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In order to investigate the emission mechanism of carbon nanotubes (CNTs)，we calculated the field emission currents of 9 kinds of CNTs using the time-dependent density functional theory． It was found that there is a difference of about two orders of magnitude in emission current between the models． To investigate what causes this difference， we calculated the penetration of the electron penetration into the vacuum under the presence of electric field (E = 7.5×10^7 V/cm) and absence of electric field (E = 0 V/cm) for each energy level． It was revealed that, in 7 of the 9 models, there is a "correlation" and a "strong correlation" between the emission current and the penetration of electrons into the vacuum in the absence of an electric field. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Emission Current / Carbon Nanotube / ab initio Calculation / First Principle Calculation / Time Dependent Density Functional Theory / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 298, ED2022-67, pp. 55-58, Dec. 2022. | |
| Paper # | ED2022-67 | |
| Date of Issue | 2022-12-01 (ED) | |
| ISSN | 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 | ED2022-67 |
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| Conference Information | |
| Committee | ED |
| Conference Date | 2022-12-08 - 2022-12-09 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | 12/8 Nagoya University, 12/9 WINC AICHI |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Applications of electron and ion beam |
| Paper Information | |
| Registration To | ED |
| Conference Code | 2022-12-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 nanotubes based on time-dependent density functional theory |
| Sub Title (in English) | |
| Keyword(1) | Emission Current |
| Keyword(2) | Carbon Nanotube |
| Keyword(3) | ab initio Calculation |
| Keyword(4) | First Principle Calculation |
| Keyword(5) | Time Dependent Density Functional Theory |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Toshiharu Higuchi |
| 1st Author's Affiliation | No affiliation (*) |
| 2nd Author's Name | Yoichi Yamada |
| 2nd Author's Affiliation | University of Tsukuba (Tsukuba Univ.) |
| 3rd Author's Name | Masahiro Sasaki |
| 3rd Author's Affiliation | University of Tsukuba (Tsukuba Univ.) |
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| Speaker | Author-1 |
| Date Time | 2022-12-09 15:00:00 |
| Presentation Time | 25 minutes |
| Registration for | ED |
| Paper # | ED2022-67 |
| Volume (vol) | vol.122 |
| Number (no) | no.298 |
| Page | pp.55-58 |
| #Pages | 4 |
| Date of Issue | 2022-12-01 (ED) |
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