Highly Sensitive Plasmonic Structures Utilizing a Silicon Dioxide Overlayer

Chylek, Jakub; Urbancová, Petra; Hlubina, Petr; Sobota, Jaroslav; Pudiš, Dušan

doi:10.3390/nano12183090

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…The position of the resonance peak depends on the size and shape of the nanoparticle, as well as the refractive index of the surrounding medium [ 136 , 137 , 138 ]. Plasmonic sensors operate by monitoring changes in the resonance wavelength

that occur when analyte molecules bind to the surface of the nanoparticle, altering the local refractive index.…”

Section: Sensorsmentioning

confidence: 99%

Optical Processes behind Plasmonic Applications

Babicheva

2023

Nanomaterials

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Plasmonics is a revolutionary concept in nanophotonics that combines the properties of both photonics and electronics by confining light energy to a nanometer-scale oscillating field of free electrons, known as a surface plasmon. Generation, processing, routing, and amplification of optical signals at the nanoscale hold promise for optical communications, biophotonics, sensing, chemistry, and medical applications. Surface plasmons manifest themselves as confined oscillations, allowing for optical nanoantennas, ultra-compact optical detectors, state-of-the-art sensors, data storage, and energy harvesting designs. Surface plasmons facilitate both resonant characteristics of nanostructures and guiding and controlling light at the nanoscale. Plasmonics and metamaterials enable the advancement of many photonic designs with unparalleled capabilities, including subwavelength waveguides, optical nanoresonators, super- and hyper-lenses, and light concentrators. Alternative plasmonic materials have been developed to be incorporated in the nanostructures for low losses and controlled optical characteristics along with semiconductor-process compatibility. This review describes optical processes behind a range of plasmonic applications. It pays special attention to the topics of field enhancement and collective effects in nanostructures. The advances in these research topics are expected to transform the domain of nanoscale photonics, optical metamaterials, and their various applications.

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that occur when analyte molecules bind to the surface of the nanoparticle, altering the local refractive index.…”

Section: Sensorsmentioning

confidence: 99%

Optical Processes behind Plasmonic Applications

Babicheva

2023

Nanomaterials

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“…The paper [ 9 ] describes measures aimed at improving the performance of a non-dispersive infrared methane gas sensor by using multilayer thin-film bandpass filters containing germanium (Ge) and niobium pentoxide (Nb 2 O 5 ) and based on alternating layers with a high and low refractive index, respectively. The researchers [ 10 ] developed a highly sensitive plasmonic layered structure containing layers of chromium, gold, chromium, and silicon dioxide deposited on a BK7 base for measuring a liquid analyte.…”

Section: Introductionmentioning

confidence: 99%

Optical and Mechanical Properties of Layered Infrared Interference Filters

Bembenek

Маковійчук

Shatskyi

et al. 2022

Sensors

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The design and manufacturing technology of interference-absorbing short-wave filters based on a layered composition of Si–SiO on a sapphire substrate of various shapes was developed. A transition layer of SiO was applied to the surface of the substrate, alternating with layers of Si–SiO with an odd number of quarter-wave layers of materials with high (Si) and low refractive indices (SiO), and the application of an outer layer of SiO as an appropriate control of the materials’ thickness. The optical properties of the infrared light filter were studied. It was established that the created design of the light filter provides the minimum light transmission in the visible region of the spectrum from 0.38 to 0.78 µm and the maximum in the near infrared region from 1.25 to 5 µm and has stable optical indicators. A method for studying the stress–strain state and strength of a multilayer coating of a light filter under the action of a local arbitrarily oriented load was developed. For simplicity in the analysis and for obtaining results in the analytical form, the one-dimensional model of the configuration “multilayer covering—firm substrate” constructed earlier by authors was used. From a mechanical point of view, the upper protective layer of the multilayer coating was modeled by a flexible plate, and the inner operational composite N-layer was subjected to Winkler’s hypothesis about the proportionality of stresses and elastic displacements.

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Design and theoretical analysis of SPR biosensors based on gold-silver alloy and protective top layer for enhanced biosensing applications

Phiri,

Zekriti

2024

Physica B: Condensed Matter

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Highly Sensitive Plasmonic Structures Utilizing a Silicon Dioxide Overlayer

Cited by 4 publications

References 36 publications

Optical Processes behind Plasmonic Applications

Optical Processes behind Plasmonic Applications

Optical and Mechanical Properties of Layered Infrared Interference Filters

Design and theoretical analysis of SPR biosensors based on gold-silver alloy and protective top layer for enhanced biosensing applications

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