An Optimized Dielectric-Metal-Dielectric Refractive Index Nanosensor

Hassan, Md. Farhad; Sagor, Rakibul Hasan; Tathfif, Infiter; Rashid, Kazi Sharmeen; Radoan, Mohammed

doi:10.1109/jsen.2020.3016570

Cited by 36 publications

(8 citation statements)

References 48 publications

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“…In the presence of the target, dye-tagged, single-stranded DNA can reinstate the fluorescence signal to its initial condition. Furthermore, the sensitivity (S), which is defined as the change in resonant shift over a unit change in refractive index, is the most often utilized performance parameter in the case of such optical sensors [ 14 , 145 ].…”

Section: Synergy Between Covid-19 Prevention Detection and Diagnosis ...mentioning

confidence: 99%

Forecasting the Post-Pandemic Effects of the SARS-CoV-2 Virus Using the Bullwhip Phenomenon Alongside Use of Nanosensors for Disease Containment and Cure

et al. 2022

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The COVID-19 pandemic has the tendency to affect various organizational paradigm alterations, which civilization hasyet to fully comprehend. Personal to professional, individual to corporate, and across most industries, the spectrum of transformations is vast. Economically, the globe has never been more intertwined, and it has never been subjected to such widespread disruption. While many people have felt and acknowledged the pandemic’s short-term repercussions, the resultant paradigm alterations will certainly have long-term consequences with an unknown range and severity. This review paper aims at acknowledging various approaches for the prevention, detection, and diagnosis of the SARS-CoV-2 virus using nanomaterials as a base material. A nanostructure is a material classification based on dimensionality, in proportion to the characteristic diameter and surface area. Nanoparticles, quantum dots, nanowires (NW), carbon nanotubes (CNT), thin films, and nanocomposites are some examples of various dimensions, each acting as a single unit, in terms of transport capacities. Top-down and bottom-up techniques are used to fabricate nanomaterials. The large surface-to-volume ratio of nanomaterials allows one to create extremely sensitive charge or field sensors (electrical sensors, chemical sensors, explosives detection, optical sensors, and gas sensing applications). Nanowires have potential applications in information and communication technologies, low-energy lightning, and medical sensors. Carbon nanotubes have the best environmental stability, electrical characteristics, and surface-to-volume ratio of any nanomaterial, making them ideal for bio-sensing applications. Traditional commercially available techniques have focused on clinical manifestations, as well as molecular and serological detection equipment that can identify the SARS-CoV-2 virus. Scientists are expressing a lot of interest in developing a portable and easy-to-use COVID-19 detection tool. Several unique methodologies and approaches are being investigated as feasible advanced systems capable of meeting the demands. This review article attempts to emphasize the pandemic’s aftereffects, utilising the notion of the bullwhip phenomenon’s short-term and long-term effects, and it specifies the use of nanomaterials and nanosensors for detection, prevention, diagnosis, and therapy in connection to the SARS-CoV-2.

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Section: Synergy Between Covid-19 Prevention Detection and Diagnosis ...mentioning

confidence: 99%

Forecasting the Post-Pandemic Effects of the SARS-CoV-2 Virus Using the Bullwhip Phenomenon Alongside Use of Nanosensors for Disease Containment and Cure

et al. 2022

View full text Add to dashboard Cite

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“…SPPs give rise to an attenuation field in the direction perpendicular to the metal-insulator surface, and their amplitudes decrease exponentially [3]. In this case, their electromagnetic energy is highly localized near the surface, enabling them to break through the conventional optical diffraction [4]. Therefore, SPPs show the possibility to achieving nanoscale photonic devices with high integration.…”

Section: Introductionmentioning

confidence: 99%

“…Plasmonic sensors, particularly based on metal-insulatormetal (MIM) waveguide structures, have garnered significant attention. The primary characteristics of these structures include simple construction [1], easy integration [3], less bend loss and ability to confine light at the subwavelength scale [1][2][3][4][5][6]. Therefore, many resonant cavities utilizing coupled MIM waveguide have been proposed, such as elliptical ring cavity [7], M-shaped cavity and so on [8].…”

Section: Introductionmentioning

confidence: 99%

MIM plasmonic sensors based on single-side ring cavity with one stub and their applications

Sun,

Qu,

et al. 2024

Phys. Scr.

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A plasmonic sensor is proposed, comprising a metal–insulator–metal (MIM) straight waveguide and a ring cavity with one stub (RCS). Using the finite element method, its transport properties are simulated and systematically analyzed. By optimizing the structure parameters, the sensor obtains the maximum sensitivity (S) of 2010 nm/RIU and the maximum figure of merit (FOM) of 49219.04 RIU-1. It demonstrates a sensing resolution (SR) of 4.98 × 10-7 RIU in the detection of refractive index variation. Based on the optimized parameters, temperature sensing is investigated utilizing Polydimethylsiloxane (PDMS) as the temperature-sensitive medium, and the temperature sensitivity is found to be -0.90 nm/℃. In addition, multiple independently tunable resonances are achieved by adding a ring cavity (RC) above the straight waveguide. This derived structure enables the simultaneous detection of electrolyte samples (Na+ and K+) in blood with bio-sensing sensitivities reaching 0.1833 nm·dL/mg and 0.2 nm·dL/mg. These results have directive significance for the development of multifunctional and ultra-compact plasmonic sensor.

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“…These electromagnetic waves are tightly bound to the metal surface so that they overcome the diffraction limit of light, confining it to a smaller region than under the conventional diffraction limit and generating a high-intensity localized electromagnetic field, with the magnetic field strength diminishing rapidly in the vertical direction [3,4]. Due to SPPs' characteristics of breaking the diffraction limit and strong localization, many optical devices based on SPPs have been designed and applied in the optical field, such as refractive index sensors [5,6], optical switches [7], filters [8,9], demultiplexers [10,11], and so on.…”

Section: Introductionmentioning

confidence: 99%

MIM waveguide based nano refractive index sensor for hemoglobin and glucose concentration detection in human body

Yan,

Cao,

et al. 2024

Phys. Scr.

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In this study, a nanoscale refractive index sensor structure is proposed, which is realised using a metal-insulator-metal (MIM) waveguide and a grooved circular ring with double disk cavity (GRDD) structure coupled to each other. The finite element method (FEM) was used to analyze and investigate the effects of the variations of each structural parameter on the transmittance spectra and the comprehensive performance of the sensor. Based on the simulation results, the optimum sensitivity parameter of the sensor structure is 2800 nm/RIU with a figure of merit (FOM) value of 51.9 RIU-1. The sensor structure is capable of being used in biomedical field with sensitivities of 3.895 nm/gL^(-1), 4.870 nm/gL^(-1), and 4.955 nm/gL^(-1), respectively, for detecting hemoglobin of blood types A, B, and O, and 4.48 nm/gL^(-1), for detecting glucose concentration.

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An Optimized Dielectric-Metal-Dielectric Refractive Index Nanosensor

Cited by 36 publications

References 48 publications

Forecasting the Post-Pandemic Effects of the SARS-CoV-2 Virus Using the Bullwhip Phenomenon Alongside Use of Nanosensors for Disease Containment and Cure

Forecasting the Post-Pandemic Effects of the SARS-CoV-2 Virus Using the Bullwhip Phenomenon Alongside Use of Nanosensors for Disease Containment and Cure

MIM plasmonic sensors based on single-side ring cavity with one stub and their applications

MIM waveguide based nano refractive index sensor for hemoglobin and glucose concentration detection in human body

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