Niti Rani, Aashish Kumar Bohre, Aniruddha Bhattacharya
{"title":"VO2 驱动的极化不敏感共形元结构释放太赫兹波段的可重构性","authors":"Niti Rani, Aashish Kumar Bohre, Aniruddha Bhattacharya","doi":"10.1007/s11468-024-02465-4","DOIUrl":null,"url":null,"abstract":"<p>This paper presents an innovative multifunctional wideband conformal metasurface structure using phase-changing vanadium dioxide. It consists of “quad dual-connected arrows-shaped VO<sub>2</sub> resonators” on an amorphous silicon dioxide (SiO<sub>2</sub>) substrate backed with a 0.2-µm-thick gold layer. This unique design functions as a reflector and absorber offering a novel contribution in the terahertz frequency range. Each unit cell covers a 6-THz bandwidth from 5.6 to 11.6 THz with more than 90% absorptivity and reflectivity. For deeper insight, the paper also explores its circuit model, surface currents, and field distributions. Furthermore, this wideband absorber maintains its performance at incident angles up to 55°, showing polarization-insensitive behavior. The simulated absorptivity aligns well with the absorptivity extracted using an equivalent circuit model (ECM). Its outstanding performance makes it suitable for electromagnetic interference-EMC, biomedical, and stealth applications.</p>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"VO2-driven Polarization-Insensitive Conformal Meta-structure Unlocking the Reconfigurability in Terahertz Regime\",\"authors\":\"Niti Rani, Aashish Kumar Bohre, Aniruddha Bhattacharya\",\"doi\":\"10.1007/s11468-024-02465-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>This paper presents an innovative multifunctional wideband conformal metasurface structure using phase-changing vanadium dioxide. It consists of “quad dual-connected arrows-shaped VO<sub>2</sub> resonators” on an amorphous silicon dioxide (SiO<sub>2</sub>) substrate backed with a 0.2-µm-thick gold layer. This unique design functions as a reflector and absorber offering a novel contribution in the terahertz frequency range. Each unit cell covers a 6-THz bandwidth from 5.6 to 11.6 THz with more than 90% absorptivity and reflectivity. For deeper insight, the paper also explores its circuit model, surface currents, and field distributions. Furthermore, this wideband absorber maintains its performance at incident angles up to 55°, showing polarization-insensitive behavior. The simulated absorptivity aligns well with the absorptivity extracted using an equivalent circuit model (ECM). Its outstanding performance makes it suitable for electromagnetic interference-EMC, biomedical, and stealth applications.</p>\",\"PeriodicalId\":736,\"journal\":{\"name\":\"Plasmonics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plasmonics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1007/s11468-024-02465-4\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s11468-024-02465-4","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
VO2-driven Polarization-Insensitive Conformal Meta-structure Unlocking the Reconfigurability in Terahertz Regime
This paper presents an innovative multifunctional wideband conformal metasurface structure using phase-changing vanadium dioxide. It consists of “quad dual-connected arrows-shaped VO2 resonators” on an amorphous silicon dioxide (SiO2) substrate backed with a 0.2-µm-thick gold layer. This unique design functions as a reflector and absorber offering a novel contribution in the terahertz frequency range. Each unit cell covers a 6-THz bandwidth from 5.6 to 11.6 THz with more than 90% absorptivity and reflectivity. For deeper insight, the paper also explores its circuit model, surface currents, and field distributions. Furthermore, this wideband absorber maintains its performance at incident angles up to 55°, showing polarization-insensitive behavior. The simulated absorptivity aligns well with the absorptivity extracted using an equivalent circuit model (ECM). Its outstanding performance makes it suitable for electromagnetic interference-EMC, biomedical, and stealth applications.
期刊介绍：
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.
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