Analysis and Simulation of a Novel Localized Surface Plasmonic Highly Sensitive Refractive Index Sensor

Bahador, Hamid; Heidarzadeh, Hamid

doi:10.1007/s11468-020-01144-4

Cited by 18 publications

(3 citation statements)

References 38 publications

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“…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]. The SPP sensors have become the most promising structure because of their ability to minimize the size, rapid detection, high responsivity, and high sensitivity along with appropriate selectivity [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…Plasmonic nanostructures able to control light in space smaller than the diffraction limit, have a widespread application in waveguides, detectors [1][2][3], solar cells [4][5][6][7][8], and lasers [9]. Based on the precise permeability function of metals, their optical properties are inherently dependent on the fluctuating behavior of electrons in the metal.…”

Section: Introductionmentioning

confidence: 99%

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

Bahador

Heidarzadeh

2021

Preprint

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In this research, an optimum design for better usage of field resonance was proposed. More interaction of the field that formed around nano-particles with a solution which has refractive index variations substantially can increase the sensitivity of the plasmonic biosensors. More interaction could be provided by floating nano-particles in the solution. The proposed structure, which has peak plasmonic resonance, has better light sensing features in comparison to similar non-floating structures. While without floating nano-particle, sensitivity is 265.8 nm/RIU with the realization of the full floating nano-particles, the sensitivity of the structure with elliptic disc and circular disc nano-particles are 574.2 nm/RIU and 425 nm/RIU, respectively. FWHM (Full width at half maximum) of the structure with elliptic disc and circular disc nano-particles are 57.4 nm and 49.4 nm, respectively. In presence of meshed SiO2 network and pseudo-floating form, sensitivity and FWHM of the structure are 504 nm/RIU and 58.4 nm for elliptic discs and 372 nm/RIU and 49.9 nm for circular discs, respectively.

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“…[19][20][21][22] One of the important ways of light trapping is using plasmonic structures. [23][24][25] Recently, there appear a greatly increasing number of studies on the plasmonic nanostructures [26][27][28][29][30] because of their good prospects for applications in such systems to solve several practical nano-electronics problems. Local fields arising near such structures as a result of plasma oscillations of the conduction electrons of noble metals arouse the interest of researchers to use them in optoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

Photocurrent improvement of an ultra-thin silicon solar cell using the localized surface plasmonic effect of clustering nanoparticles

2020

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The cluster-shaped plasmonic nanostructures are used to manage the incident light inside an ultra-thin silicon solar cell. Here we simulate spherical, conical, pyramidal, and cylindrical nanoparticles in a form of a cluster at the rear side of a thin silicon cell, using the finite difference time domain (FDTD) method. By calculating the optical absorption and hence the photocurrent, it is shown that the clustering of nanoparticles significantly improves them. The photocurrent enhancement is the result of the plasmonic effects of clustering the nanoparticles. For comparison, first a cell with a single nanoparticle at the rear side is evaluated. Then four smaller nanoparticles are put around it to make a cluster. The photocurrents of 20.478 mA/cm2, 23.186 mA/cm2, 21.427 mA/cm2, and 21.243 mA/cm2 are obtained for the cells using clustering conical, spherical, pyramidal, cylindrical NPs at the backside, respectively. These values are 13.987 mA/cm2, 16.901 mA/cm2, 16.507 mA/cm2, 17.926 mA/cm2 for the cell with one conical, spherical, pyramidal, cylindrical NPs at the backside, respectively. Therefore, clustering can significantly improve the photocurrents. Finally, the distribution of the electric field and the generation rate for the proposed structures are calculated.

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Analysis and Simulation of a Novel Localized Surface Plasmonic Highly Sensitive Refractive Index Sensor

Cited by 18 publications

References 38 publications

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

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

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

Photocurrent improvement of an ultra-thin silicon solar cell using the localized surface plasmonic effect of clustering nanoparticles

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