Plasmonic and metamaterial biosensors: a game-changer for virus detection

Wang, Junfei; Xu, Zhenyu; Kotsifaki, Domna G.

doi:10.1039/d2sd00217e

Cited by 14 publications

(9 citation statements)

References 238 publications

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“…( 2 ), which represents the resolution of the detector for specific analytes, where λ is the wavelength of the resonance peak and the figure of merit (FOM) are presented in Eq. ( 3 ) 36 . …”

Section: Methodsmentioning

confidence: 99%

Structure of plasmonic multi spectral Apta sensor and analyzing of bulk and surface sensitivity

Parviz,

Shokorlou,

Heidarzadeh

2024

Sci Rep

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In this work, a multispectral aptasensor structure, including a sub-layer and two side walls, was presented. The cells are positioned at the down and top of the structure, with the down cells oriented perpendicular to the walls and the top cells aligned parallel to the walls. The validity of the findings was verified by the utilization of a numerical simulation technique known as 3D Finite Difference Time Domain (FDTD). The biosensor under consideration exhibits sensitivities of 1093.7 nm/RIU, 754 nm/RIU, and 707.43 nm/RIU in mode III, mode II, and mode I, respectively. In the majority of instances, the quantity of analyte available is insufficient to coat the surface of the sensor thoroughly. Consequently, in this study, the evaluation of surface sensitivity was undertaken alongside bulk sensitivity. The surface sensitivity of the suggested structure for mode II in the sensor layer, with thicknesses of 10, 20, 30, and 70 nm, is measured to be 25, 78, 344, and 717.636 nm/RIU, respectively. Our design incorporates a unique arrangement of sub-layer and side walls, with cells positioned to maximize interaction with the target analyte. This innovative configuration, combined with Ag for its superior plasmonic properties, enables the detection of E. coli O157 with remarkable sensitivity.

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Section: Methodsmentioning

confidence: 99%

Structure of plasmonic multi spectral Apta sensor and analyzing of bulk and surface sensitivity

Parviz,

Shokorlou,

Heidarzadeh

2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Furthermore, vivid full-color development using plasmonic metamaterials based on the MIM structure has been reported, which is expected to be applied to flexible, tunable color printing technologies [24][25][26][27][28][29]. This capability has profound implications for medical diagnosis, where the enhanced resolution and contrast of plasmonic metamaterial-based imaging systems can facilitate the early detection of diseases at the cellular or even molecular level [30,31]. Furthermore, the sensitivity of plasmonic metamaterials to changes in the local refractive index makes them ideal candidates for label-free biosensing applications, providing a non-invasive means to detect and monitor biological markers in real-time [32,33].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Silver Nanostructured Arrays in Plasmonic Metamaterials for Sensitive Imaging Applications

Okamoto,

Tanaka,

Matsuyama

et al. 2024

Photonics

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This paper delves into the strategic design and optimization of silver (Ag) nanostructured arrays within plasmonic metamaterials, targeting the enhancement of imaging sensitivity. Leveraging Finite-Difference Time-Domain (FDTD) simulations, our research rigorously compares various Ag nanostructured geometries, including nanospheres, nanocones, nanodisks, and nanocubes. The aim is to pinpoint configurations that significantly enhance electric field localization on the surfaces of nanostructures, a pivotal factor. The nanocube array exhibits superior field enhancement, particularly in narrow nanogaps, suggesting its suitability for high-sensitivity applications. Further exploration into nanocube arrays reveals the crucial role of nanogap size and spacer layer thickness in tuning the optical properties through the manipulation of Fabry–Pérot and mirror image modes in metal–insulator–metal (MIM) structures. By presenting a thorough analysis of these nanostructured arrays, the study not only contributes to our understanding of the fundamental principles governing plasmonic metamaterials but also provides a solid foundation for future innovation in highly sensitive imaging applications. It underscores the importance of nanostructure design and optimization in achieving significant improvements in the performance of plasmonic devices, marking a pivotal step forward in the field of nanophotonics and its application to sensitive imaging technologies.

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“…Almost all samples contained microplastics, most of which were within 20 µm. As plasmonic optical tweezers are capable of manipulating nanometer objects, we theoretically investigated the electromagnetic field enhancement of a plasmonic metamaterial [6][7][8] in order to increase the sensitivity of the OTMRS technique. Through the integration of metamaterial into OTMRS, we will able to detect and manipulate plastics at nanometer scales.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic nanostructures for environmental monitoring and/or biological applications

Gao,

Xu,

Jiang

et al. 2023

Plasmonics VII

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Plasmonic and metamaterial biosensors: a game-changer for virus detection

Abstract: One of the most important processes in the fight against current and future pandemics is the rapid diagnosis and initiation of treatment of viruses in humans. In these times, the...

Cited by 14 publications

References 238 publications

Structure of plasmonic multi spectral Apta sensor and analyzing of bulk and surface sensitivity

Structure of plasmonic multi spectral Apta sensor and analyzing of bulk and surface sensitivity

Design and Optimization of Silver Nanostructured Arrays in Plasmonic Metamaterials for Sensitive Imaging Applications

Plasmonic nanostructures for environmental monitoring and/or biological applications

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