{"title":"Bismuth-based broadband metamaterial absorber","authors":"Fan Wang, H. Fan, Xianghua Zeng","doi":"10.1117/1.JNP.16.036004","DOIUrl":null,"url":null,"abstract":"Abstract. A numerical simulation of a metamaterial broadband absorber is performed using the finite-difference time-domain method. The absorber adopts a four-layer structure with titanium dioxide (TiO2) rectangular pairs, a bismuth (Bi) layer, a silicon dioxide (SiO2) layer, and a titanium nitride (TiN) layer from top to bottom, respectively, and the TiO2 rectangular pairs are periodically and symmetrically arranged in a rectangular array. The optimization results show that the average absorption of the designed absorber is 97.6% in the wavelength range of 500 to 3500 nm and the average absorption can reach 99% in the wavelength range of 811 to 3162 nm (2351 nm). The coupling of local surface plasmon resonance and propagating plasmon resonance and the good absorption and broadband absorption properties exhibited by metallic Bi were further found by analyzing the distribution of electromagnetic fields. The designed absorber has polarization and temperature-insensitive properties and a simple structure and is easily fabricated.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1117/1.JNP.16.036004","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 2
Abstract
Abstract. A numerical simulation of a metamaterial broadband absorber is performed using the finite-difference time-domain method. The absorber adopts a four-layer structure with titanium dioxide (TiO2) rectangular pairs, a bismuth (Bi) layer, a silicon dioxide (SiO2) layer, and a titanium nitride (TiN) layer from top to bottom, respectively, and the TiO2 rectangular pairs are periodically and symmetrically arranged in a rectangular array. The optimization results show that the average absorption of the designed absorber is 97.6% in the wavelength range of 500 to 3500 nm and the average absorption can reach 99% in the wavelength range of 811 to 3162 nm (2351 nm). The coupling of local surface plasmon resonance and propagating plasmon resonance and the good absorption and broadband absorption properties exhibited by metallic Bi were further found by analyzing the distribution of electromagnetic fields. The designed absorber has polarization and temperature-insensitive properties and a simple structure and is easily fabricated.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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