Xiangfen Li, Zechao Tao, Baoyi Hao, Qing-qiang Kong, Zhuo Liu, Zhanjun Liu, Q. Guo, Lang Liu
{"title":"Reduced Graphene Oxide Bubbles with Tunable Electromagnetic Shielding Effectiveness","authors":"Xiangfen Li, Zechao Tao, Baoyi Hao, Qing-qiang Kong, Zhuo Liu, Zhanjun Liu, Q. Guo, Lang Liu","doi":"10.2139/ssrn.3567471","DOIUrl":null,"url":null,"abstract":"Abstract Reduced graphene oxide (rGO) bubbles containing sphere-like pores inside are prepared using polystyrene (PS) micro-balls as template. rGO bubbles exhibit excellent electromagnetic interference (EMI) shielding effectiveness in frequency range of 8–12 GHz. The shielding can be attributed to absorption mechanism which is a synergistic effect of conductive rGO sheets and repeated reflection inside the sphere-like pores. Furthermore, EMI shielding effectiveness can be tuned by heat-treated temperature, pore size and ratio. The EMI shielding effectiveness of rGO bubbles can reach to 54 dB with 5 μm pores of 25 wt% content as well as thermally annealed at 800 °C.","PeriodicalId":102139,"journal":{"name":"Other Topics Engineering Research eJournal","volume":"186 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Other Topics Engineering Research eJournal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2139/ssrn.3567471","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
Abstract Reduced graphene oxide (rGO) bubbles containing sphere-like pores inside are prepared using polystyrene (PS) micro-balls as template. rGO bubbles exhibit excellent electromagnetic interference (EMI) shielding effectiveness in frequency range of 8–12 GHz. The shielding can be attributed to absorption mechanism which is a synergistic effect of conductive rGO sheets and repeated reflection inside the sphere-like pores. Furthermore, EMI shielding effectiveness can be tuned by heat-treated temperature, pore size and ratio. The EMI shielding effectiveness of rGO bubbles can reach to 54 dB with 5 μm pores of 25 wt% content as well as thermally annealed at 800 °C.
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