A theoretical study of optically enhanced transmission characteristics of subwavelength metal Y-shaped arrays and its application on refractive index sensor

doi:10.1016/j.rinp.2019.102495

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	A theoretical study of optically enhanced transmission characteristics of subwavelength metal Y-shaped arrays and its application on refractive index sensor
	Qi, Yunping 1,2; Wang, Yue 1; Zhang, Xuewei 1; Liu, Chuqin 1; Hu, Bingbing 1; Bai, Yulong 1,2; Wang, Xiangxian 3
刊名	RESULTS IN PHYSICS
	2019-12-01
卷号	15
关键词	Surface plasmon polaritons Enhanced optical transmission Subwavelength metallic hole arrays Finite element method
ISSN号	2211-3797
DOI	10.1016/j.rinp.2019.102495
英文摘要	In this paper, the electric field distributions and transmission characteristics of subwavelength Y-shaped metal hole arrays are studied by using the finite element method (FEM). The results show that the Y-shaped metal hole arrays can achieve light-enhanced transmission in the subwavelength region, and the electric field distributions around the corners are stronger. When the energy of surface plasmon polaritons (SPPs) and local surface plasmon (LSP) are similar, it is more favorable for the transmission of metal nanohole structure. In addition, the influence of the inclined angle, thickness, width, and period on the transmission of this structure is also discussed. The effect of the inclined angle on the transmission characteristics is particularly obvious. As the angle increases, the transmittance increases from 0.558 to 0.628 at the wavelength of 0.67 mu m, and the transmittance of 0.289 at the wavelength of 1.08 mu m increases to 0.840 at 1.17 mu m. Through the optimization of structural parameters, we achieve a theoretical value of the refractive index sensitivity (S) as high as 900 nm/RIU, and the corresponding sensing resolution is 2.22 x 10(-4) RIU. These results would be helpful in designing the refractive index sensor of high-sensitivity and band-pass fillers, and have guiding significance for biological sensor applications.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000502391000003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155295]
专题	理学院
作者单位	1.Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Gansu, Peoples R China; 2.Northwest Normal Univ, Engn Res Ctr Gansu Provence Intelligent Informat, Lanzhou 730070, Gansu, Peoples R China; 3.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Qi, Yunping,Wang, Yue,Zhang, Xuewei,et al. A theoretical study of optically enhanced transmission characteristics of subwavelength metal Y-shaped arrays and its application on refractive index sensor[J]. RESULTS IN PHYSICS,2019,15.
APA	Qi, Yunping.,Wang, Yue.,Zhang, Xuewei.,Liu, Chuqin.,Hu, Bingbing.,...&Wang, Xiangxian.(2019).A theoretical study of optically enhanced transmission characteristics of subwavelength metal Y-shaped arrays and its application on refractive index sensor.RESULTS IN PHYSICS,15.
MLA	Qi, Yunping,et al."A theoretical study of optically enhanced transmission characteristics of subwavelength metal Y-shaped arrays and its application on refractive index sensor".RESULTS IN PHYSICS 15(2019).