scholarly journals Highly sensitive refractive index sensor based on SPR with silver and titanium dioxide coating

2021 ◽  
Vol 53 (6) ◽  
Author(s):  
Haiming Yang ◽  
Guangyao Wang ◽  
Ying Lu ◽  
Jianquan Yao
Keyword(s):  
Refractive Index ◽  
Titanium Dioxide ◽  
Refractive Index Sensor ◽  
Highly Sensitive

scholarly journals Highly sensitive refractive index sensor based on SPR with silver and titanium dioxide coating

2021 ◽  
Author(s):  
haiming yang ◽  
Guangyao Wang ◽  
Ying Lu ◽  
Jianquan Yao
Keyword(s):  
Refractive Index ◽  
Titanium Dioxide ◽  
Near Infrared ◽  
High Sensitivity ◽  
Organic Chemical ◽  
Refractive Index Sensor ◽  
Geometrical Parameters ◽  
Crystal Fiber ◽  
Wavelength Sensitivity ◽  
Highly Sensitive

Abstract A surface plasmon resonance (SPR) sensor based on dual-layered air hole shaped photonic crystal fiber (PCF) is proposed to realize the simultaneous measurement of refractive index (RI). The plasma materials silver (Ag) and titanium dioxide (TiO2) were sequentially coated on the outer surface of PCF to obtain enhanced sensing properties. By carefully adjusting the geometrical parameters, the simulation results show a maximum wavelength sensitivity of 72000 nm/RIU for analyte refractive indices ranging from 1.26 to 1.365, which realizes the high-sensitivity sensing in the visible to near-infrared optical band. Moreover, the sensor attains a maximum figure of merit (FOM) of 229 and RI resolution of 1.29 × 10− 6. This work shows great potential for real-time, affordable, and accurate measurement in biomedical, biological and organic chemical domains.

scholarly journals Highly Sensitive D-Shaped Plasmonic Refractive Index Sensor for a Broad Range of Refractive Index Detection

2021 ◽  
Vol 13 (1) ◽  
pp. 1-11
Author(s):  
Emranul Haque ◽  
Abdullah Al Noman ◽  
Md. Anwar Hossain ◽  
Nguyen Hoang Hai ◽  
Yoshinori Namihira ◽  
...  
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensor ◽  
Highly Sensitive ◽  
Refractive Index Detection

Surface refractive index sensor based on titanium dioxide composite thin film for detection of cadmium ions

Measurement ◽  
2021 ◽  
pp. 110287
Author(s):  
Nur Alia Sheh Omar ◽  
Ramli Irmawati ◽  
Yap Wing Fen ◽  
Ernee Noryana Muhamad ◽  
Faten Bashar Kamal Eddin ◽  
...  
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Titanium Dioxide ◽  
Composite Thin Film ◽  
Refractive Index Sensor ◽  
Cadmium Ions

Highly sensitive refractive index sensor for detection of Hg2+ based on Fano-like resonance in metal-dielectric-metal meta-structure

2021 ◽  
Author(s):  
Shuangxiu Yuan ◽  
Xuebo Sun ◽  
Jing Li ◽  
Yan Li ◽  
Fufang Su ◽  
...  
Keyword(s):  
Refractive Index ◽  
Limit Of Detection ◽  
Wavelength Shift ◽  
Refractive Index Sensor ◽  
Large Area ◽  
Amount Of Substance ◽  
Resonance Modes ◽  
Dipole Resonance ◽  
Highly Sensitive ◽  
Fabry Perot

Abstract We experimentally and theoretically investigate Fano-like resonance in large-area Au/SiO2/Au nano-patches meta-structure, which is originating from the coupling between Fabry Perot resonance and magnetic dipole resonance modes. A highly sensitive refractive index sensor based on the lineshape analysis is obtained. The extracted wavelength shift with the amount of substance of Hg2+ changing from 10-3 pmol to 1 nmol has a linear dependence, and the sensitivity can reach to ultra-low limit of detection (LOD) as 10-3 pmol. This study may provide an approach for the development and modification in sensing.

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