Title
A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays.
Abstract
In the present study, we design a tunable plasmonic refractive index sensor with nanoring-strip graphene arrays. The calculations prove that the nanoring-strip have two transmission dips. By changing the strip length L of the present structure, we find that the nanoring-strip graphene arrays have a wide range of resonances (resonance wavelength increases from 17.73 mu m to 28.15 mu m). When changing the sensing medium refractive index n(med), the sensitivity of mode A and B can reach 2.97 mu m/RIU and 5.20 mu m/RIU. By changing the doping level n(g), we notice that the transmission characteristics can be tuned flexibly. Finally, the proposed sensor also shows good angle tolerance for both transverse magnetic (TM) and transverse electric (TE) polarizations. The proposed nanoring-strip graphene arrays along with the numerical results could open a new avenue to realize various tunable plasmon devices and have a great application prospect in biosensing, detection, and imaging.
Year
DOI
Venue
2018
10.3390/s18124489
SENSORS
Keywords
Field
DocType
surface plasmon resonance,refractive sensing,graphene
Analytical chemistry,Nanoring,Graphene,Polarization (waves),Finite-difference time-domain method,Engineering,Resonance,Optoelectronics,Wavelength,Refractive index,Plasmon
Journal
Volume
Issue
ISSN
18
12
1424-8220
Citations 
PageRank 
References 
1
0.63
0
Authors
11
Name
Order
Citations
PageRank
Chunlian Cen110.63
Hang Lin210.63
jing huang33716.25
Cuiping Liang410.63
Xifang Chen510.63
Yongjian Tang6375.04
Zao Yi710.63
Xin Ye810.63
Jiangwei Liu910.63
Yougen Yi1010.63
Shuyuan Xiao1110.63