Chenyu Gong, Wenxing Yang, Shubo Cheng, Zao Yi, Zhiqiang Hao and Qingdong Zeng
{"title":"Design and performance study of a multiband metamaterial tunable thermal switching absorption device based on AlCuFe and VO2","authors":"Chenyu Gong, Wenxing Yang, Shubo Cheng, Zao Yi, Zhiqiang Hao and Qingdong Zeng","doi":"10.1039/D4DT01751J","DOIUrl":null,"url":null,"abstract":"<p >In this paper, we propose a multiband adjustable metamaterial absorption device based on a Dirac semimetal (BDS) AlCuFe and a thermally controlled phase-change material VO<small><sub>2</sub></small>. The absorption device has an axially symmetric structure, resulting in polarization-independent characteristics, and when VO<small><sub>2</sub></small> is in a high-temperature metal state, ultra-high absorption rates and sensitives at frequencies of <em>M</em><small><sub>1</sub></small> = 2.89 THz, <em>M</em><small><sub>2</sub></small> = 7.53 THz, <em>M</em><small><sub>3</sub></small> = 7.97 THz, and <em>M</em><small><sub>4</sub></small> = 9.02 THz are achieved. Using a parameter inversion method, we calculated the impedance of the absorber, proving that it achieves impedance matching and produces perfect absorption in the resonance region. Additionally, we changed the physical and chemical parameters of the absorption device, demonstrating the device's excellent tunability and manufacturing tolerance. Furthermore, by lowering the temperature of VO<small><sub>2</sub></small> to that of a low dielectric state, additional resonant peaks with ultra-high absorption rates at frequencies <em>M</em><small><sub>5</sub></small> = 5.62 THz, <em>M</em><small><sub>6</sub></small> = 7.16 THz, <em>M</em><small><sub>7</sub></small> = 7.64 THz, and <em>M</em><small><sub>8</sub></small> = 8.80 THz were obtained, broadening the absorption band of the device. Lastly, we investigated the detection sensitivity of the device by changing the external refractive index, resulting in a maximum sensitivity of 2229 GHz RIU<small><sup>−1</sup></small>. To sum up, the absorption device has great application potential in the fields of communication, sensing, temperature detection and photoelectric instruments.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" 40","pages":" 16647-16653"},"PeriodicalIF":3.5000,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/dt/d4dt01751j","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we propose a multiband adjustable metamaterial absorption device based on a Dirac semimetal (BDS) AlCuFe and a thermally controlled phase-change material VO2. The absorption device has an axially symmetric structure, resulting in polarization-independent characteristics, and when VO2 is in a high-temperature metal state, ultra-high absorption rates and sensitives at frequencies of M1 = 2.89 THz, M2 = 7.53 THz, M3 = 7.97 THz, and M4 = 9.02 THz are achieved. Using a parameter inversion method, we calculated the impedance of the absorber, proving that it achieves impedance matching and produces perfect absorption in the resonance region. Additionally, we changed the physical and chemical parameters of the absorption device, demonstrating the device's excellent tunability and manufacturing tolerance. Furthermore, by lowering the temperature of VO2 to that of a low dielectric state, additional resonant peaks with ultra-high absorption rates at frequencies M5 = 5.62 THz, M6 = 7.16 THz, M7 = 7.64 THz, and M8 = 8.80 THz were obtained, broadening the absorption band of the device. Lastly, we investigated the detection sensitivity of the device by changing the external refractive index, resulting in a maximum sensitivity of 2229 GHz RIU−1. To sum up, the absorption device has great application potential in the fields of communication, sensing, temperature detection and photoelectric instruments.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.