Refractive index sensor based on all-dielectric gradient metasurface

Rodionov, S. A.; Remnev, Mikhail Anatolievich; Климов, В. В.

doi:10.1016/j.sbsr.2019.100263

Cited by 12 publications

(12 citation statements)

References 26 publications

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“…Intensity-based refractive index optical sensors typically use as a figure-of-merit the relative power (or intensity) bulk sensitivity defined as [ 33 , 34 , 35 ]:

…”

Section: Resultsmentioning

confidence: 99%

“…For the sake of comparison, Table 1 shows the intensity bulk sensitivity, limit of detection (LOD), product LOD × L sens , where L sens is the length of the sensing region, and footprint of relevant Si-based planar refractive index optical sensors reported in the literature. It is seen that the device analyzed in this work exhibits better sensitivity than those based on free-space optical interrogation [ 34 , 35 , 36 ]. Optical sensors based on integrated-optics [ 8 , 11 ] present smaller LODs but at the expense of a long sensing region.…”

Section: Resultsmentioning

confidence: 99%

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An Analysis of a Compact Label-Free Guiding-Wave Biosensor Based on a Semiconductor-Clad Dielectric Strip Waveguide

Barrios

2020

Sensors

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In this paper, a compact, integrated, semiconductor-clad strip waveguide label-free biosensor is proposed and analyzed. The device is based on CMOS-compatible materials such as amorphous-Si and silicon oxynitride. The optical sensor performance has been modeled by a three-dimensional beam propagation method. The simulations indicate that a 20-μm-long device can exhibit a surface limit of detection of 3 ng/cm2 for avidin molecules in aqueous solution. The sensor performance compares well to those displayed by other photonic biosensors with much larger footprints. The fabrication tolerances have been also studied in order to analyze the feasibility of the practical implementation of the biosensor.

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“…Intensity-based refractive index optical sensors typically use as a figure-of-merit the relative power (or intensity) bulk sensitivity defined as [ 33 , 34 , 35 ]:

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

An Analysis of a Compact Label-Free Guiding-Wave Biosensor Based on a Semiconductor-Clad Dielectric Strip Waveguide

Barrios

2020

Sensors

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“…, ω j J r is the classical current corresponding to the transition, and the Green's functions G and G (0) are defined in (11) and (12).…”

Section: Forbidden Transitionsmentioning

confidence: 99%

“…At present, the most important direction in the development of fundamental and applied science is the study of the properties of optical systems at nanoscale with the aim of creating nanolasers and spasers [1,2], nanoantennas [3][4][5][6][7], metasurfaces [8,9,10], sensors [11,12,13], optical information processing systems [14,15], devices based on quantum optics and topological photonics [16,17,18]. In all these cases, a nanoscale light source -dye molecules, epitaxial or colloidal quantum dots, color centers in crystals, or nanoscale contacts in metals -is of key importance.…”

Section: Introductionmentioning

confidence: 99%

Control of the emission of elementary quantum systems using metamaterials and nanometaparticles

Климов¹

2021

Phys.-Usp.

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The most important direction in the development of fundamental and applied physics is the study of the properties of optical systems at nanoscales for creating optical and quantum computers, biosensors, single-photon sources for quantum informatics, DNA sequencing devices, detectors of various fields, etc. In all these cases, nanosize light sources such as dye molecules, quantum dots (epitaxial or colloidal), color centers in crystals, and nanocontacts in metals are of utmost importance. In the nanoenvironment, the characteristics of these elementary quantum systems—pumping rates, radiative and nonradiative decay rates, the local density of states, lifetimes, level shifts—experience changes, which can be used to create nanosize light sources with the desired properties. Modern theoretical and experimental works on controlling the emission of elementary quantum systems with the help of plasmonic and dielectric nanostructures, metamaterials, and metamaterial nanoparticles are analyzed.

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“…The precise determination of its value allows for the identification of the investigated substance and its concentration [4,5]. Therefore, fiber-optic measurements of refractive index attracted considerable attention in finding applications in many fields including biomedicine, chemistry, environmental analysis and the food industry [6,7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Doped Nanocrystalline Diamond Films as Reflective Layers for Fiber-Optic Sensors of Refractive Index of Liquids

et al. 2019

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This paper reports the application of doped nanocrystalline diamond (NCD) films—nitrogen-doped NCD and boron-doped NCD—as reflective surfaces in an interferometric sensor of refractive index dedicated to the measurements of liquids. The sensor is constructed as a Fabry–Pérot interferometer, working in the reflective mode. The diamond films were deposited on silicon substrates by a microwave plasma enhanced chemical vapor deposition system. The measurements of refractive indices of liquids were carried out in the range of 1.3 to 1.6. The results of initial investigations show that doped NCD films can be successfully used in fiber-optic sensors of refractive index providing linear work characteristics. Their application can prolong the lifespan of the measurement head and open the way to measure biomedical samples and aggressive chemicals.

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Refractive index sensor based on all-dielectric gradient metasurface

Cited by 12 publications

References 26 publications

An Analysis of a Compact Label-Free Guiding-Wave Biosensor Based on a Semiconductor-Clad Dielectric Strip Waveguide

An Analysis of a Compact Label-Free Guiding-Wave Biosensor Based on a Semiconductor-Clad Dielectric Strip Waveguide

Control of the emission of elementary quantum systems using metamaterials and nanometaparticles

Doped Nanocrystalline Diamond Films as Reflective Layers for Fiber-Optic Sensors of Refractive Index of Liquids

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