High-performance dual-control tunable absorber with switching function and high sensitivity based on Dirac semi-metallic film and vanadium oxide

doi:10.1016/j.optlastec.2022.108245

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	High-performance dual-control tunable absorber with switching function and high sensitivity based on Dirac semi-metallic film and vanadium oxide
	Wu, Xianglong 1; Zhao, Wenchao 6; Yi, Zao 1; Yu, Jiaxin 1; Zhou, Zigang 1; Yang, Hua 5; Wang, Shifa 4; Zhang, Jianguo 3; Pan, Miao 2; Wu, Pinghui 2
刊名	Optics and Laser Technology
	2022-09-01
卷号	153
关键词	Boolean functions Natural frequencies Oxide films Oxides Refractive index Vanadium dioxide Dirac semimetal High refractive High refractive index sensing Narrow bands Performance Refractive index sensing Switching state Thin-films Tunable narrow-band absorber Tunables
ISSN号	0030-3992
DOI	10.1016/j.optlastec.2022.108245
英文摘要	This study combines two tunable metamaterials, vanadium oxide (VO2) and Dirac semimetal thin films (DSF), to design a tunable multi-band narrowband absorber with on-off switching function. When VO2 is in metallic state, the absorber has three perfect absorption peaks with absorptivity greater than 97%. By lowering the temperature, VO2 can be transformed into an insulating state, which greatly reduces the absorption rate of the absorber and realizes the change of the state of the absorber. We have conducted more in-depth studies on the absorption mechanism and structural parameters of the absorber in the on state. By changing the Fermi level (EF) of the DSF, the resonant frequency of the absorber is tunable up to 0.444 THz while maintaining the absorption rate above 90%. The absorber can maintain a stable working state in various complex electromagnetic environments, and has a refractive index sensitivity (S) of up to 462 GHz/RIU. Due to the advantages of various control methods, good performance and diverse functions, our designed absorber has good practical development prospects and market value in many fields such as switching and detection. © 2022
WOS研究方向	Optics ; Physics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000798812300001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158487]
专题	理学院
作者单位	1.Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education, Southwest University of Science and Technology, Mianyang; 621010, China; 2.College of Physics & Information Engineering, Quanzhou Normal University, Quanzhou; 362000, China 3.Department of Physics, Jinzhong University, Jinzhong; 030619, China; 4.School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou; 404000, China; 5.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 6.Department of Electronics and Information, School of Science and Engineering, Huzhou College, Huzhou; 313000, China;
推荐引用方式 GB/T 7714	Wu, Xianglong,Zhao, Wenchao,Yi, Zao,et al. High-performance dual-control tunable absorber with switching function and high sensitivity based on Dirac semi-metallic film and vanadium oxide[J]. Optics and Laser Technology,2022,153.
APA	Wu, Xianglong.,Zhao, Wenchao.,Yi, Zao.,Yu, Jiaxin.,Zhou, Zigang.,...&Wu, Pinghui.(2022).High-performance dual-control tunable absorber with switching function and high sensitivity based on Dirac semi-metallic film and vanadium oxide.Optics and Laser Technology,153.
MLA	Wu, Xianglong,et al."High-performance dual-control tunable absorber with switching function and high sensitivity based on Dirac semi-metallic film and vanadium oxide".Optics and Laser Technology 153(2022).