Dark plasmonic mode based perfect absorption and refractive index sensing

Nanoscale ◽  
2017 ◽  
Vol 9 (26) ◽  
pp. 8907-8912 ◽  
Author(s):  
W. H. Yang ◽  
C. Zhang ◽  
S. Sun ◽  
J. Jing ◽  
Q. Song ◽  
...  
Keyword(s):  
Refractive Index ◽  
Perfect Absorption ◽  
Plasmonic Mode ◽  
Refractive Index Sensing

scholarly journals Perfect Absorption and Refractive-Index Sensing by Metasurfaces Composed of Cross-Shaped Hole Arrays in Metal Substrate

Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 63
Author(s):  
Zhendong Yan ◽  
Chaojun Tang ◽  
Guohua Wu ◽  
Yumei Tang ◽  
Ping Gu ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Narrow Band ◽  
Label Free ◽  
Hybrid Mode ◽  
Perfect Absorption ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Silver Substrate ◽  
Hole Arrays

Achieving perfect electromagnetic wave absorption with a sub-nanometer bandwidth is challenging, which, however, is desired for high-performance refractive-index sensing. In this work, we theoretically study metasurfaces for sensing applications based on an ultra-narrow band perfect absorption in the infrared region, whose full width at half maximum (FWHM) is only 1.74 nm. The studied metasurfaces are composed of a periodic array of cross-shaped holes in a silver substrate. The ultra-narrow band perfect absorption is related to a hybrid mode, whose physical mechanism is revealed by using a coupling model of two oscillators. The hybrid mode results from the strong coupling between the magnetic resonances in individual cross-shaped holes and the surface plasmon polaritons on the top surface of the silver substrate. Two conventional parameters, sensitivity (S) and figure of merit (FOM), are used to estimate the sensing performance, which are 1317 nm/RIU and 756, respectively. Such high-performance parameters suggest great potential for the application of label-free biosensing.

Three-band perfect absorber with high refractive index sensing based on active tunable Dirac semimetal

2021 ◽  
Author(s):  
Zhiyou Li ◽  
Zao Yi ◽  
Tinting Liu ◽  
Li Liu ◽  
Xifang Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Gold Layer ◽  
Perfect Absorber ◽  
Refractive Index Sensing ◽  
Dirac Semimetal

In this paper, we designed a three-band narrowband perfect absorber based on Bulk Dirac semimetallic (BDS) metamaterials. The absorber consists of a hollow Dirac semimetallic layer above, a gold layer...

scholarly journals Tuning the Fano Resonance Between Localized and Propagating Surface Plasmon Resonances for Refractive Index Sensing Applications

Plasmonics ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. 1379-1385 ◽  
Author(s):  
Kristof Lodewijks ◽  
Jef Ryken ◽  
Willem Van Roy ◽  
Gustaaf Borghs ◽  
Liesbet Lagae ◽  
...  
Keyword(s):  
Refractive Index ◽  
Surface Plasmon ◽  
Fano Resonance ◽  
Surface Plasmon Resonances ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Plasmon Resonances

scholarly journals Etching Bragg gratings in Panda fibers for the temperature-independent refractive index sensing

2014 ◽  
Vol 22 (26) ◽  
pp. 31917 ◽  
Author(s):  
Jie Li ◽  
Hao Wang ◽  
Li-Peng Sun ◽  
Yunyun Huang ◽  
Long Jin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Bragg Gratings ◽  
Refractive Index Sensing

scholarly journals Degeneracy Breaking of Wood’s Anomaly for Enhanced Refractive Index Sensing

ACS Photonics ◽  
2015 ◽  
Vol 2 (5) ◽  
pp. 615-621 ◽  
Author(s):  
Michal Eitan ◽  
Zeev Iluz ◽  
Yuval Yifat ◽  
Amir Boag ◽  
Yael Hanein ◽  
...  
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensing

Fiber-Based Cavity Ring-Down Technique for Refractive Index Sensing at 1953 nm Using Tapered Fibers

2017 ◽  
Vol 1 (3) ◽  
pp. 1-4 ◽  
Author(s):  
Kavita Sharma ◽  
Sijing Liang ◽  
Shaif-ul Alam ◽  
Shanti Bhattacharya ◽  
Deepa Venkitesh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensing ◽  
Cavity Ring Down
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