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Paper Abstract and Keywords
Presentation 2019-11-21 14:40
Characteristic evaluation of field emission cathode coated with liquid gallium
Yuta Takafuji, Yoichiro Neo, Hidenori Mimura (Shizuoka Univ.) ED2019-63
Abstract (in Japanese) (See Japanese page) 
(in English) Since the field was discovered by Hata et al. That a liquid metal thin film was coated on the tip of a field emission cathode, the electric field strength required for tailor cone formation was lower than the electric field required for field emission (FE), resulting in stable FE. Studies have been reported. Both Li (2.9eV) and Ga (4.2eV), which have very different work functions, have a significant increase in FE current exceeding 1mA, and the FE process is very interesting. In these reports, the formation of a liquid metal electron source has been achieved by cleaning the surface by flushing under an ultra-high vacuum and then depositing a thin liquid metal thin film by a controlled evaporation method. When practical application is considered, including a chip forming part and a transport system in the electron gun part is a major obstacle. In this report, we found a method to form a liquid metal electron source in situ without changing the configuration of the electron gun part of the current electron beam microscope by a simple and inexpensive method, and evaluated their characteristics.
Keyword (in Japanese) (See Japanese page) 
(in English) field emission / field emission cathode coated with liquid / Ga / / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 305, ED2019-63, pp. 17-20, Nov. 2019.
Paper # ED2019-63 
Date of Issue 2019-11-14 (ED) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ED  
Conference Date 2019-11-21 - 2019-11-22 
Place (in Japanese) (See Japanese page) 
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Paper Information
Registration To ED 
Conference Code 2019-11-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Characteristic evaluation of field emission cathode coated with liquid gallium 
Sub Title (in English)  
Keyword(1) field emission  
Keyword(2) field emission cathode coated with liquid  
Keyword(3) Ga  
1st Author's Name Yuta Takafuji  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Yoichiro Neo  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
3rd Author's Name Hidenori Mimura  
3rd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Date Time 2019-11-21 14:40:00 
Presentation Time 25 
Registration for ED 
Paper # IEICE-ED2019-63 
Volume (vol) IEICE-119 
Number (no) no.305 
Page pp.17-20 
#Pages IEICE-4 
Date of Issue IEICE-ED-2019-11-14 

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