scholarly journals High-sensitivity plasmonic sensor by narrowing Fano resonances in a tilted metallic nano-groove array

2021 ◽  
Author(s):  
Shangtong Jia ◽  
Zhi Li ◽  
Jianjun Chen
Keyword(s):  
High Sensitivity ◽  
Fano Resonances ◽  
Plasmonic Sensor

Self-reference plasmonic sensors based on double Fano resonances

Nanoscale ◽  
2017 ◽  
Vol 9 (31) ◽  
pp. 11085-11092 ◽  
Author(s):  
Yujia Wang ◽  
Chengwei Sun ◽  
Hongyun Li ◽  
Qihuang Gong ◽  
Jianjun Chen
Keyword(s):  
High Sensitivity ◽  
Fano Resonances ◽  
Plasmonic Sensor ◽  
Plasmonic Sensors ◽  
Self Reference

The high-sensitivity self-reference plasmonic sensor is experimentally demonstrated based on the double Fano resonances in the gold grating, and the error contributions from the temperature noises are greatly reduced.

scholarly journals High Sensitivity Plasmonic Sensor Based on Fano Resonance with Inverted U-Shaped Resonator

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1164
Author(s):  
Gongli Xiao ◽  
Yanping Xu ◽  
Hongyan Yang ◽  
Zetao Ou ◽  
Jianyun Chen ◽  
...  
Keyword(s):  
Fano Resonance ◽  
Figure Of Merit ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Multimode Interference ◽  
Geometrical Parameters ◽  
The Finite Element Method ◽  
Plasmonic Sensor ◽  
Coupled Mode ◽  
Plasmonic Nanosensor

Herein, we propose a tunable plasmonic sensor with Fano resonators in an inverted U-shaped resonator. By manipulating the sharp asymmetric Fano resonance peaks, a high-sensitivity refractive index sensor can be realized. Using the multimode interference coupled-mode theory and the finite element method, we numerically simulate the influences of geometrical parameters on the plasmonic sensor. Optimizing the structure parameters, we can achieve a high plasmonic sensor with the maximum sensitivity for 840 nm/RIUand figure of merit for 3.9 × 105. The research results provide a reliable theoretical basis for designing high sensitivity to the next generation plasmonic nanosensor.

High Sensitivity Refractive Index and Temperature sensors with Tunable Multiple Fano Resonances

2021 ◽  
Author(s):  
Yanping Xu ◽  
Zetao Ou ◽  
Jianyun Chen ◽  
Gongli Xiao ◽  
Hongyan Yang
Keyword(s):  
Refractive Index ◽  
High Sensitivity ◽  
Temperature Sensors ◽  
Fano Resonances

scholarly journals Perfect Dual-Band Absorber Based on Plasmonic Effect with the Cross-Hair/Nanorod Combination

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 493 ◽  
Author(s):  
Yuan-Fong Chou Chau ◽  
Chung-Ting Chou Chao ◽  
Hung Ji Huang ◽  
Muhammad Raziq Rahimi Kooh ◽  
N. T. R. N. Kumara ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Near Infrared ◽  
High Sensitivity ◽  
Dual Band ◽  
Localized Surface Plasmon ◽  
Perfect Absorber ◽  
Plasmonic Effect ◽  
Plasmonic Sensor ◽  
Nanophotonic Devices ◽  
The Cross

Plasmonic effect using a cross-hair can convey strongly localized surface plasmon modes among the separated composite nanostructures. Compared to its counterpart without the cross-hair, this characteristic has the remarkable merit of enhancing absorptance at resonance and can make the structure carry out a dual-band plasmonic perfect absorber (PPA). In this paper, we propose and design a novel dual-band PPA with a gathering of four metal-shell nanorods using a cross-hair operating at visible and near-infrared regions. Two absorptance peaks at 1050 nm and 750 nm with maximal absorptance of 99.59% and 99.89% for modes 1 and 2, respectively, are detected. High sensitivity of 1200 nm refractive unit (1/RIU), figure of merit of 26.67 and Q factor of 23.33 are acquired, which are very remarkable compared with the other PPAs. In addition, the absorptance in mode 1 is about nine times compared to its counterpart without the cross-hair. The proposed structure gives a novel inspiration for the design of a tunable dual-band PPA, which can be exploited for plasmonic sensor and other nanophotonic devices.

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