Quantum states of cylindrical surface charge density for modeling plasmonic circuit elements: Nanowires, nanorods, cavities, and waveguides

Bagherian, Maryam; Passian, Ali

doi:10.1103/physreva.105.063507

Cited by 1 publication

(1 citation statement)

References 38 publications

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“…To construct effective nano photonic devices [ 1 ] with ultra-fast operational speed and the capability to concentrate the electromagnetic field into a region which is significantly narrower than the operating wavelength [ 2 ], using SPPs ensures that the objectives of the nanophotonic branch [ 3 ] are addressed. SPPs have been used extensively in several technologies, including waveguides [ 4 ], modulators [ 5 ], nano-lasers [ 6 ], nano rings [ 7 ], nano wires [ 8 ] and nano-antennas [ 9 ]. These can be advantageous because of their rapid transient response, compactness, and adjustability in efficiency parameters.…”

Section: Introductionmentioning

confidence: 99%

Computational Investigation of Advanced Refractive Index Sensor Using 3-Dimensional Metamaterial Based Nanoantenna Array

Verma

Rahman

2023

Sensors

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Photonic researchers are increasingly exploiting nanotechnology due to the development of numerous prevalent nanosized manufacturing technologies, which has enabled novel shape-optimized nanostructures to be manufactured and investigated. Hybrid nanostructures that integrate dielectric resonators with plasmonic nanostructures are also offering new opportunities. In this work, we have explored a hybrid coupled nano-structured antenna with stacked multilayer lithium tantalate (LiTaO3) and Aluminum oxide (Al2O3), operating at wavelength ranging from 400 nm to 2000 nm. Here, the sensitivity response has been explored of these nano-structured hybrid arrays. It shows a strong electromagnetic confinement in the separation gap (g) of the dimers due to strong surface plasmon resonance (SPR). The influences of the structural dimensions have been investigated to optimize the sensitivity. The designed hybrid coupled nanostructure with the combination of 10 layers of gold (Au) and Lithium tantalate (LiTaO3) or Aluminum oxide (Al2O3) (five layers each) having height, h1 = h2 = 10 nm exhibits 730 and 660 nm/RIU sensitivity, respectively. The sensitivity of the proposed hybrid nanostructure has been compared with a single metallic (only gold) elliptical paired nanostructure. Depending on these findings, we demonstrated that a roughly two-fold increase in the sensitivity (S) can be obtained by utilizing a hybrid coupled nanostructure compared to an identical nanostructure, which competes with traditional sensors of the same height, (h). Our innovative novel plasmonic hybrid nanostructures provide a framework for developing plasmonic nanostructures for use in various sensing applications.

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