Ultra wide sensing range plasmonic refractive index sensor based on nano-array with rhombus particles

doi:10.1088/1674-1056/abb229

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	Ultra wide sensing range plasmonic refractive index sensor based on nano-array with rhombus particles
	Zhu, Jiankai 1; Wang, Xiangxian 1; Wu, Xiaoxiong 1; Su, Yingwen 1; Xu, Yueqi 1; Qi, Yunping 2; Zhang, Liping 1; Yang, Hua 1
刊名	Chinese Physics B
	2020-10-01
卷号	29 期号:11
关键词	Diffraction gratings Finite difference time domain method Geometry Gold Infrared devices Metallic films Refractometers Surface plasmon resonance Surface plasmons Time domain analysis Near-infrared wavelength Plasmonic resonances Refractive index sensing Refractive index sensitivity Refractive index sensor Sensing performance Surrounding environment Two-dimensional metals
ISSN号	16741056
DOI	10.1088/1674-1056/abb229
英文摘要	We propose a two-dimensional metal grating with rhombus particles on a gold film structure for refractive index sensing due to its perfect absorption at near-infrared wavelength. Via two-dimensional metal grating coupling, the incident light energy is effectively transformed into the surface plasmons which propagate along the upper surface of the gold film and interact with the surrounding environment in a wide range. The plasmonic resonance mechanism of the structure is discussed in detail by theoretical analysis and finite-difference time-domain method. After optimizing the geometrical parameters, the designed structure shows the sensing performance with a refractive index sensitivity of 1006 nm/RIU. More importantly, this plasmonic refractive index sensor achieves an ultra wide refractive index sensing range from 1.0 to 2.4 with a stable sensing performance. The promising simulation results of the structure show that the sensor has a broad application prospect in the field of biology and chemistry. © 2020 Chinese Physical Society and IOP Publishing Ltd.
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000582989200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151010]
专题	理学院
作者单位	1.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; 2.College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou; 730070, China
推荐引用方式 GB/T 7714	Zhu, Jiankai,Wang, Xiangxian,Wu, Xiaoxiong,et al. Ultra wide sensing range plasmonic refractive index sensor based on nano-array with rhombus particles[J]. Chinese Physics B,2020,29(11).
APA	Zhu, Jiankai.,Wang, Xiangxian.,Wu, Xiaoxiong.,Su, Yingwen.,Xu, Yueqi.,...&Yang, Hua.(2020).Ultra wide sensing range plasmonic refractive index sensor based on nano-array with rhombus particles.Chinese Physics B,29(11).
MLA	Zhu, Jiankai,et al."Ultra wide sensing range plasmonic refractive index sensor based on nano-array with rhombus particles".Chinese Physics B 29.11(2020).