マイクロ沿面ギャップにおける絶縁破壊特性の極性効果

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2020/07/01

タイトル(英語): Polarity Effect of Breakdown Characteristics across Micrometer-scale Surface Gap

著者名: 岩渕　大行（横浜国立大学），大山　力（横浜国立大学），熊田　亜紀子（東京大学），日髙　邦彦（東京大学）

著者名(英語): Hiroyuki Iwabuchi (Yokohama National University), Tsutomu Oyama (Yokohama National University), Akiko Kumada (The University of Tokyo), Kunihiko Hidaka (The University of Tokyo)

キーワード: マイクロギャップ，沿面放電，PIC-MCC法，電界電子放出　　micrometer-scale gap，surface discharges，PIC-MCC method，electric field emission

要約(英語): With a miniaturization of electrical devices, the gap between electrode becomes lower and lower. In order to optimize the insulation design, the understanding of breakdown phenomenon across micrometer-scale gap is essential. In this study, breakdown characteristics across micrometer-scale gap was investigated based on experiment and numerical simulation. The result shows that the breakdown voltage under positive voltage application is 1.5 times higher than the one under the negative voltage application. The polarity effect can be explained by the source of initial electrons. Under negative voltage application, the initial electrons are emitted from the cathode surface based on Fowler-Nordheim equation. On the other hand, under positive voltage application, the insulator plays an important role on breakdown voltage.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.140 No.7 （2020）

本誌掲載ページ: 342-348 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/140/7/140_342/_article/-char/ja/