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Terahertz Metamaterial Absorber Based on Ni-Mn-Sn Ferromagnetic Shape Memory Alloy Films

文献类型：期刊论文

作者Liu, Rui3; Wang, Xiaochuan2; Zhu, Jiachen4; Tian, Xiaohua1; Zhao, Wenbin2; Tan, Changlong2; Zhang, Kun5
刊名METALS
出版日期2023-07-01
卷号13期号:7页码:14
关键词metamaterials shape memory alloy films Ni-Mn-Sn alloy films terahertz absorber dynamic tuning
DOI10.3390/met13071162
通讯作者Tan, Changlong(changlongtan@hrbust.edu.cn) ; Zhang, Kun(kzhang@imr.ac.cn)
英文摘要Terahertz absorbers have been extensively investigated by researchers due to their applications in thermophotovoltaic energy conversion and sensors, but a key factor limiting their development is the lack of vital and versatile materials. Ferromagnetic shape memory alloys (FSMAs) offer a novel remedy for tunable metamaterials due to their brilliant recovery of deformation, remote control, and transient response. In this study, we propose a tunable absorber based on magnetic field tuning, consisting of Ni-Mn-Sn ferro-magnetic shape memory alloy films in fractal geometry and optically excited Si plates. Numerical analysis shows that the proposed absorber has an absorbance bandwidth of 1.129 THz above 90% between 1.950 THz and 3.079 THz. The absorber geometry can be regulated by an external magnetic field, allowing dynamic switching between broadband and narrowband absorption modes, the latter showing an ultra-narrow bandwidth and a high-quality factor Q of similar to 25.8. The proposed terahertz absorber has several advantages over current state-of-the-art bifunctional absorbers, including its ultra-thin structure of 10.39 mu m and an additional switching function. The absorption can be continuously tuned from 90% to 5% when the light-excited silicon plate is transferred from the insulator state to the metal state. This study presents a promising alternative strategy for developing actively regulated and versatile terahertz-integrated devices.
资助项目Heilongjiang Provincial Natural Science Foundation of China[YQ2022112] ; National Natural Science Foundation of China[51871083] ; National Natural Science Foundation of China[51971085] ; National Natural Science Foundation of China[52001101] ; National Natural Science Foundation of China[52271172]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001036710500001
出版者MDPI
资助机构Heilongjiang Provincial Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/178741]  
专题金属研究所_中国科学院金属研究所
通讯作者Tan, Changlong; Zhang, Kun
作者单位1.Harbin Univ Sci & Technol, Sch Elect & Elect Engn, Harbin 150080, Peoples R China
2.Harbin Univ Sci & Technol, Sch Mat Sci & Chem Engn, Harbin 150080, Peoples R China
3.Harbin Univ Sci & Technol, Sch Sci, Harbin 150080, Peoples R China
4.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Rui,Wang, Xiaochuan,Zhu, Jiachen,et al. Terahertz Metamaterial Absorber Based on Ni-Mn-Sn Ferromagnetic Shape Memory Alloy Films[J]. METALS,2023,13(7):14.
APA Liu, Rui.,Wang, Xiaochuan.,Zhu, Jiachen.,Tian, Xiaohua.,Zhao, Wenbin.,...&Zhang, Kun.(2023).Terahertz Metamaterial Absorber Based on Ni-Mn-Sn Ferromagnetic Shape Memory Alloy Films.METALS,13(7),14.
MLA Liu, Rui,et al."Terahertz Metamaterial Absorber Based on Ni-Mn-Sn Ferromagnetic Shape Memory Alloy Films".METALS 13.7(2023):14.

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来源：金属研究所

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