Highly sensitive refractive index sensor by floating nano-particles in the solution for the detection of glucose/fructose concentration

Bahador, Hamid; Heidarzadeh, Hamid

doi:10.1007/s11082-021-03334-8

Cited by 5 publications

(3 citation statements)

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“…Based on figure 5(b), as the value of R increases, the distance between the two modes increases, and also, the wavelength dips exhibit an obvious redshift which can expressed by λ r formula in equation (6). The figure of merit (FOM=S/FWHM [13]) is one of the important features used to determine the performance of RI sensors. The higher the FOM value, the better the sensor performance.…”

Section: Simulation and Resultsmentioning

confidence: 99%

“…In general, SPPs are formed at the boundary of two substances with different signs of dielectric constants [7,8]. SPPs have attracted much attention in recent years in nanotechnology, due to overcoming the diffraction limit of light and localizing light in the subwavelength range [9][10][11][12][13]. It has significant applications in chemical sensors, biosensors, solar cells, modulators, nano-imaging, and power splitters [14][15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Combining MIM-based SPP waveguide with different shapes of cavities is an attractive idea to improve optical response such as the Figure of Merit (FOM=S/FWHM [13]). The better light-matter interaction in plasmonic sensors arises from the effects of cavity plasmon resonance and different geometric designs of the resonator [29,44].…”

Section: Introductionmentioning

confidence: 99%

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High sensitivity metal-insulator-metal sensor based on ring-hexagonal resonator with a couple of square cavities connected

Aghaei

Bahador

2022

Phys. Scr.

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The necessity for cheaper and more efficient sensors has been the main motivation for the use of Metal-Insulator-Metal (MIM) sensors. In this paper, a micro-dimensional refractive index MIM sensor based on surface plasmon polaritons is presented. This sensor has a ring-hexagonal resonator and a pair of squares-ring resonators that are connected to each other. For the proposed structure, magnetic field profile, transmission spectrum, and important sensor parameters such as sensitivity are obtained through the finite-difference time-domain (FDTD) method. By optimizing the dimensions of the resonators, we achieved a sensitivity equivalent to 2115 nm/RIU in the first mode and 2180 nm/RIU in the second mode. The FOM values for the first and second modes were 118.25 RIU-1 and 120.208 RIU-1, respectively. The results show that the ring-hexagonal resonator significantly improves the sensor parameters in both modes. These enhancements can be considered unique due to the simple structure presented and as a result the reduction of construction costs.

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Section: Simulation and Resultsmentioning

confidence: 99%