Jiao Wang , Mengsi Liu , Hua Yang , Zao Yi , Chaojun Tang , Fan Gao , Junqiao Wang , Boxun Li
{"title":"基于VO2相变的环形方形开放超材料可调谐中红外超宽带吸收装置","authors":"Jiao Wang , Mengsi Liu , Hua Yang , Zao Yi , Chaojun Tang , Fan Gao , Junqiao Wang , Boxun Li","doi":"10.1016/j.micrna.2025.208353","DOIUrl":null,"url":null,"abstract":"<div><div>We propose a thermally tunable, ultra-broadband mid-infrared metamaterial absorber based on vanadium dioxide (VO<sub>2</sub>) with a simple annular-square patterned structure. The device, composed of a Ti substrate, a SiO<sub>2</sub> spacer, and a VO<sub>2</sub> functional layer, achieves an outstanding average absorption rate of 98.19 % and a broad bandwidth of 11.67 μm (7.44–19.11 μm) covering the atmospheric window (8–14 μm) when VO<sub>2</sub> is in its metallic phase (342 K). The absorption mechanism is elucidated through impedance matching and electromagnetic field analysis, revealing a combination of localized surface plasmon resonance and Fabry-Perot resonance. The absorber's performance is dynamically tunable with temperature via the VO<sub>2</sub> phase transition and exhibits remarkable insensitivity to incident angle and polarization. Its simple three-layer structure facilitates easier fabrication compared to complex alternatives. This work provides a promising strategy for applications in infrared stealth, thermal radiation, and photothermal conversion.</div></div>","PeriodicalId":100923,"journal":{"name":"Micro and Nanostructures","volume":"208 ","pages":"Article 208353"},"PeriodicalIF":3.0000,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Tunable mid-infrared ultra-wideband absorption device with annular-square open metamaterials based on VO2 phase change\",\"authors\":\"Jiao Wang , Mengsi Liu , Hua Yang , Zao Yi , Chaojun Tang , Fan Gao , Junqiao Wang , Boxun Li\",\"doi\":\"10.1016/j.micrna.2025.208353\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We propose a thermally tunable, ultra-broadband mid-infrared metamaterial absorber based on vanadium dioxide (VO<sub>2</sub>) with a simple annular-square patterned structure. The device, composed of a Ti substrate, a SiO<sub>2</sub> spacer, and a VO<sub>2</sub> functional layer, achieves an outstanding average absorption rate of 98.19 % and a broad bandwidth of 11.67 μm (7.44–19.11 μm) covering the atmospheric window (8–14 μm) when VO<sub>2</sub> is in its metallic phase (342 K). The absorption mechanism is elucidated through impedance matching and electromagnetic field analysis, revealing a combination of localized surface plasmon resonance and Fabry-Perot resonance. The absorber's performance is dynamically tunable with temperature via the VO<sub>2</sub> phase transition and exhibits remarkable insensitivity to incident angle and polarization. Its simple three-layer structure facilitates easier fabrication compared to complex alternatives. This work provides a promising strategy for applications in infrared stealth, thermal radiation, and photothermal conversion.</div></div>\",\"PeriodicalId\":100923,\"journal\":{\"name\":\"Micro and Nanostructures\",\"volume\":\"208 \",\"pages\":\"Article 208353\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2025-09-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Micro and Nanostructures\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2773012325002821\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Micro and Nanostructures","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2773012325002821","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
Tunable mid-infrared ultra-wideband absorption device with annular-square open metamaterials based on VO2 phase change
We propose a thermally tunable, ultra-broadband mid-infrared metamaterial absorber based on vanadium dioxide (VO2) with a simple annular-square patterned structure. The device, composed of a Ti substrate, a SiO2 spacer, and a VO2 functional layer, achieves an outstanding average absorption rate of 98.19 % and a broad bandwidth of 11.67 μm (7.44–19.11 μm) covering the atmospheric window (8–14 μm) when VO2 is in its metallic phase (342 K). The absorption mechanism is elucidated through impedance matching and electromagnetic field analysis, revealing a combination of localized surface plasmon resonance and Fabry-Perot resonance. The absorber's performance is dynamically tunable with temperature via the VO2 phase transition and exhibits remarkable insensitivity to incident angle and polarization. Its simple three-layer structure facilitates easier fabrication compared to complex alternatives. This work provides a promising strategy for applications in infrared stealth, thermal radiation, and photothermal conversion.
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