{"title":"通过连续剥离NbSe2薄膜增强电磁屏蔽：结构和电学优化","authors":"Won-Jin Kim, Kun-Woo Nam, Sung-Hoon Park","doi":"10.1007/s13391-025-00585-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigates the impact of sequential exfoliation on the structural, electrical, and electromagnetic interference (EMI) shielding properties of NbSe<sub>2</sub> thin films. Sequential exfoliation yields two distinct films: the 1st, derived from the initial exfoliation, and the 2nd, obtained from further exfoliation of the residual material. Comparative analysis reveals that the 2nd film significantly enhanced total shielding effectiveness in the 8.2–12.4 GHz range, primarily due to its superior absorption shielding effectiveness. This enhancement is attributed to forming a highly uniform, laminated two-dimensional structure, which optimizes electrical conductivity and promotes effective electromagnetic wave dissipation through the skin effect. In contrast, the 1st film contains structural defects and residual oxides, which disrupt conductive pathways and reduce overall shielding efficiency. The denser morphology of the 2nd film facilitates repeated internal reflections, leading to greater energy absorption, whereas the irregular structure of the 1st film limits absorption efficiency.</p></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 5","pages":"707 - 714"},"PeriodicalIF":2.6000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced Electromagnetic Shielding Via Sequential Exfoliation of NbSe2 Thin Film: Structural and Electrical Optimization\",\"authors\":\"Won-Jin Kim, Kun-Woo Nam, Sung-Hoon Park\",\"doi\":\"10.1007/s13391-025-00585-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study investigates the impact of sequential exfoliation on the structural, electrical, and electromagnetic interference (EMI) shielding properties of NbSe<sub>2</sub> thin films. Sequential exfoliation yields two distinct films: the 1st, derived from the initial exfoliation, and the 2nd, obtained from further exfoliation of the residual material. Comparative analysis reveals that the 2nd film significantly enhanced total shielding effectiveness in the 8.2–12.4 GHz range, primarily due to its superior absorption shielding effectiveness. This enhancement is attributed to forming a highly uniform, laminated two-dimensional structure, which optimizes electrical conductivity and promotes effective electromagnetic wave dissipation through the skin effect. In contrast, the 1st film contains structural defects and residual oxides, which disrupt conductive pathways and reduce overall shielding efficiency. The denser morphology of the 2nd film facilitates repeated internal reflections, leading to greater energy absorption, whereas the irregular structure of the 1st film limits absorption efficiency.</p></div>\",\"PeriodicalId\":536,\"journal\":{\"name\":\"Electronic Materials Letters\",\"volume\":\"21 5\",\"pages\":\"707 - 714\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electronic Materials Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13391-025-00585-5\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronic Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s13391-025-00585-5","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced Electromagnetic Shielding Via Sequential Exfoliation of NbSe2 Thin Film: Structural and Electrical Optimization
This study investigates the impact of sequential exfoliation on the structural, electrical, and electromagnetic interference (EMI) shielding properties of NbSe2 thin films. Sequential exfoliation yields two distinct films: the 1st, derived from the initial exfoliation, and the 2nd, obtained from further exfoliation of the residual material. Comparative analysis reveals that the 2nd film significantly enhanced total shielding effectiveness in the 8.2–12.4 GHz range, primarily due to its superior absorption shielding effectiveness. This enhancement is attributed to forming a highly uniform, laminated two-dimensional structure, which optimizes electrical conductivity and promotes effective electromagnetic wave dissipation through the skin effect. In contrast, the 1st film contains structural defects and residual oxides, which disrupt conductive pathways and reduce overall shielding efficiency. The denser morphology of the 2nd film facilitates repeated internal reflections, leading to greater energy absorption, whereas the irregular structure of the 1st film limits absorption efficiency.
期刊介绍：
Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.
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