A highly sensitive and tunable plasmonic sensor based on a graphene tubular resonator

2020 ◽  
Vol 458 ◽  
pp. 124686 ◽  
Author(s):  
Ladan Akbari ◽  
Kambiz Abedi
Keyword(s):  
Plasmonic Sensor ◽  
Highly Sensitive

Comparative study of the highly sensitive plasmonic sensor based on a D-Shaped photonic crystal fiber with silver or gold layers

2021 ◽  
Author(s):  
Bahar Meshginqalam ◽  
Jamal Barvestani
Keyword(s):  
Photonic Crystal ◽  
Comparative Study ◽  
Photonic Crystal Fiber ◽  
Structural Parameters ◽  
Simultaneous Detection ◽  
Plasmonic Sensor ◽  
Plasmonic Material ◽  
Sensor Performance ◽  
Crystal Fiber ◽  
Highly Sensitive

Abstract A highly sensitive D-shaped photonic crystal fiber sensor with circular lattice is proposed for external plasmonic sensing. The proposed design of plasmonic material in a D-shaped form effectively facilitates the excitation of surface plasmons and enhances the sensor performance. As a comparative study, two different plasmonic materials, gold and silver, are applied D-shapely on the fiber and the proposed sensor performance is numerically investigated and evaluated. Moreover, the optimized structural parameters such as air-hole diameters and the thickness of silver and gold layers are selected via simulation results which cause the highest sensitivity of 40000nm/RIU for the gold coated fiber using the wavelength interrogation method. Furthermore, the maximum figure of merit can reach 621.50RIU-1. Analytes with the refractive indices ranging from 1.34 to 1.39 can be detected by double-loss peak that is a more reliable method of simultaneous detection and verification of sensing characteristics. Due to its promising results, the proposed sensor can be widely useful in the area of chemical and biological sensing.

scholarly journals Highly Sensitive and Tunable Plasmonic Sensor Based on a Nanoring Resonator with Silver Nanorods

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1399 ◽  
Author(s):  
Chung-Ting Chou Chao ◽  
Yuan-Fong Chou Chau ◽  
Hung Ji Huang ◽  
N. T. R. N. Kumara ◽  
Muhammad Raziq Rahimi Kooh ◽  
...  
Keyword(s):  
Refractive Index ◽  
System Response ◽  
Refractive Index Sensor ◽  
Plasmonic Sensor ◽  
Refractive Index Sensitivity ◽  
Silver Nanorods ◽  
Metal Waveguide ◽  
Highly Sensitive ◽  
Metal Insulator Metal ◽  
Index Sensitivity

We numerically and theoretically investigate a highly sensitive and tunable plasmonic refractive index sensor that is composed of a metal-insulator-metal waveguide with a side-coupled nanoring, containing silver nanorods using the finite element method. Results reveal that the presence of silver nanorods in the nanoring has a significant impact on sensitivity and tunability performance. It gives a flexible way to tune the system response in the proposed structure. Our designed sensor has a sensitivity of 2080 nm/RIU (RIU is the refractive index unit) along with a figure of merit and a quality factor of 29.92 and 29.67, respectively. The adequate refractive index sensitivity can increase by adding the silver nanorods in a nanoring, which can induce new surface plasmon polaritons (SPPs) modes that cannot be found by a regular nanoring. For a practical application, a valid introduction of silver nanorods in the nanoring can dramatically reduce the dimension of the proposed structure without sacrificing performance.

scholarly journals A Highly Sensitive Quadruple D Shaped Open Channel Photonic Crystal Fiber Plasmonic Sensor: A Comparative Study on Materials Effect

2021 ◽  
pp. 104050
Author(s):  
M. Hussayeen Khan Anik ◽  
S.M. Riazul Islam ◽  
Hriteshwar Talukder ◽  
Sakib Mahmud ◽  
M. Ifaz Ahmad Isti ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Comparative Study ◽  
Photonic Crystal Fiber ◽  
Open Channel ◽  
Plasmonic Sensor ◽  
Crystal Fiber ◽  
Highly Sensitive

Highly Sensitive Grapefruit Fiber-Based Multiplex Plasmonic Sensor

2020 ◽  
Author(s):  
Firoz Haider ◽  
Rifat Ahmmed Aoni ◽  
Rajib Ahmed ◽  
Ghafour Amouzad Mahdiraji ◽  
Mohd Fahmi Azman
Keyword(s):  
Plasmonic Sensor ◽  
Highly Sensitive

scholarly journals SERS-Based Molecularly Imprinted Plasmonic Sensor for Highly Sensitive PAH Detection

ACS Sensors ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 693-702 ◽  
Author(s):  
Alexander Castro-Grijalba ◽  
Verónica Montes-García ◽  
María José Cordero-Ferradás ◽  
Eduardo Coronado ◽  
Jorge Pérez-Juste ◽  
...  
Keyword(s):  
Plasmonic Sensor ◽  
Molecularly Imprinted ◽  
Highly Sensitive
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