{"title":"Formation of micro-pillars on W by He plasma irradiation with N2/Ar impurities","authors":"Rongshi Zhang , Shin Kajita , Dogyun Hwangbo , Hirohiko Tanaka , Yuta Yamamoto , Noriyasu Ohno","doi":"10.1016/j.mtla.2025.102341","DOIUrl":null,"url":null,"abstract":"<div><div>Tungsten samples were exposed to helium plasma with additional nitrogen and argon impurity gases. As a result, microscale pillar-like structures formed on the tungsten surface under similar conditions where nanotendril bundles can be formed. This study summarizes the condition under which those pillar-like structures form. The surface morphology and height profile were observed, and the field emission properties of the W sample with the pillar-like structure were analyzed. The possible formation mechanism of these structures was discussed.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"39 ","pages":"Article 102341"},"PeriodicalIF":2.9000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materialia","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589152925000080","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/16 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Tungsten samples were exposed to helium plasma with additional nitrogen and argon impurity gases. As a result, microscale pillar-like structures formed on the tungsten surface under similar conditions where nanotendril bundles can be formed. This study summarizes the condition under which those pillar-like structures form. The surface morphology and height profile were observed, and the field emission properties of the W sample with the pillar-like structure were analyzed. The possible formation mechanism of these structures was discussed.
期刊介绍：
Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials.
Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).
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