scholarly journals Double-layered metal grating for high-performance refractive index sensing

2015 ◽  
Vol 23 (7) ◽  
pp. 8995 ◽  
Author(s):  
Guozhen Li ◽  
Yang Shen ◽  
Guohui Xiao ◽  
Chongjun Jin
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Refractive Index Sensing ◽  
Metal Grating

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.

scholarly journals Mode Sensitivity Exploration of Silica–Titania Waveguide for Refractive Index Sensing Applications

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7452
Author(s):  
Muhammad A. Butt ◽  
Andrzej Kaźmierczak ◽  
Cuma Tyszkiewicz ◽  
Paweł Karasiński ◽  
Ryszard Piramidowicz
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Near Infrared ◽  
Sol Gel ◽  
Cost Effective ◽  
Dip Coating ◽  
Infrared Wavelength ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Coating Method

In this paper, a novel and cost-effective photonic platform based on silica–titania material is discussed. The silica–titania thin films were grown utilizing the sol–gel dip-coating method and characterized with the help of the prism-insertion technique. Afterwards, the mode sensitivity analysis of the silica–titania ridge waveguide is investigated via the finite element method. Silica–titania waveguide systems are highly attractive due to their ease of development, low fabrication cost, low propagation losses and operation in both visible and near-infrared wavelength ranges. Finally, a ring resonator (RR) sensor device was modelled for refractive index sensing applications, offering a sensitivity of 230 nm/RIU, a figure of merit (FOM) of 418.2 RIU−1, and Q-factor of 2247.5 at the improved geometric parameters. We believe that the abovementioned integrated photonics platform is highly suitable for high-performance and economically reasonable optical sensing devices.

scholarly journals Design Procedure and Fabrication of Reproducible Silicon Vernier Devices for High-Performance Refractive Index Sensing

Sensors ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 13548-13567 ◽  
Author(s):  
Benedetto Troia ◽  
Ali Khokhar ◽  
Milos Nedeljkovic ◽  
Scott Reynolds ◽  
Youfang Hu ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Design Procedure ◽  
Refractive Index Sensing

scholarly journals Engineering multimodal dielectric resonance of TiO2 based nanostructures for high-performance refractive index sensing applications

2020 ◽  
Vol 28 (16) ◽  
pp. 23509
Author(s):  
Muhammad Aamir Abbas ◽  
Amna Zubair ◽  
Kashif Riaz ◽  
Wei Huang ◽  
Jinghua Teng ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Dielectric Resonance

scholarly journals Metasurface generated polarization insensitive Fano resonance for high-performance refractive index sensing

2019 ◽  
Vol 27 (9) ◽  
pp. 13252 ◽  
Author(s):  
Huigang Liu ◽  
Lu Zheng ◽  
Pingzhun Ma ◽  
Ying Zhong ◽  
Bo Liu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fano Resonance ◽  
High Performance ◽  
Refractive Index Sensing ◽  
Polarization Insensitive
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