Multipole Mie Resonances in MXene-Antenna Arrays

Karimi, Vahid; Babicheva, Viktoriia E.

doi:10.1021/acs.jpcc.3c02031

Cited by 6 publications

(3 citation statements)

References 61 publications

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“…For these modes, their present either magnetic or electric dipole provides a strong electromagnetic coupling of the modes to the incident radiation field. The manifestation of this effect has been widely studied in the literature (e.g., see refs , , and ; these modes are also known as the first and second Mie resonances). Exactly these two modes appear in the spectrum of the experimental structure in ref , providing incoherent operation conditions for the metasurface (according to the classification of ref ).…”

Section: Resultsmentioning

confidence: 99%

Trapped Mode Excitation in Dielectric Metasurfaces with an Inhomogeneous Superstrate

Hlushchenko,

Andrieieva,

Evlyukhin

et al. 2024

J. Phys. Chem. C

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In the electromagnetic wave theory, the term “trapped mode” (also known as a dark mode and bound state in the continuum) is used to describe modes of a system that are weakly coupled to free space. In electromagnetic metasurfaces, to excite a trapped mode by a field of incident radiation, a certain perturbation is introduced into their unit cells to break spatial symmetry. Here we discuss an alternative mechanism of excitation of trapped modes in metasurfaces by introducing inhomogeneity into the upper layer (superstrate) covering the structure. The finite-size metasurface under study is made of dielectric disk-shaped resonators regularly arranged on a thick substrate. The dielectric properties of an inhomogeneous superstrate are described by the randomized Weierstrass function, which is widely used when modeling polymer mixtures. In our study, we establish a relationship between the excitation conditions of the trapped mode and the degree of introduced disorder. The issues of the quality factor of the trapped mode and the features of the electromagnetic near-field localization in the metasurface are discussed as well. The results obtained are important for implementing metasurface-based spasers and nanolasers to reveal the relation between the disorder degree and system coherence.

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Section: Resultsmentioning

confidence: 99%

Trapped Mode Excitation in Dielectric Metasurfaces with an Inhomogeneous Superstrate

Hlushchenko,

Andrieieva,

Evlyukhin

et al. 2024

J. Phys. Chem. C

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“…Next, our study highlights the potential application of lattice resonances observed in periodic nanostructures and metasurfaces, encompassing the realm of MXenes, two-dimensional and layered materials. 15,16 MXenes, a family of two-dimensional materials, hold promise for photodetector applications due to their exceptional electrical and optical properties. 17,18 These materials can be employed as the active layer in photodetectors, where incident light generates electron-hole pairs, inducing a photocurrent.…”

Section: Mxene Antennasmentioning

confidence: 99%

Metasurface engineering for collective resonances, tailored emissivity, and enhanced photodetectors

Islam,

Karimi,

Raney

et al. 2023

Metamaterials, Metadevices, and Metasystems 2023

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Efficiently confining light at the nanoscale within optical antennas facilitates its precise manipulation and enables the creation of nanostructures with innovative photonic functionalities. We present results of utilizing the iron pyrite antennas to precisely engineer the emissivity of mid-infrared thermal emitters. We also explore multipole Mie resonances within arrays of transition metal carbides and nitrides, specifically focusing on MXene materials. This engineering is achieved by strategically manipulating multipole resonance effects and non-radiative dissipation processes.

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“…By incorporating MXene antennas into metasurfaces, we engineer directional scattering of light. 15,16 We tailor the inherent plasmonic resonances in MXenes to respond to specific wavelengths, enabling the creation of metasurfaces that can scatter incident light in a controlled and directional manner (Fig. 1).…”

Section: Mxene Metasurfacesmentioning

confidence: 99%

Multipole Mie and lattice resonances in metasurfaces with nanoantenna arrays

Karimi,

Bosomtwi,

Romero

et al. 2023

Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI

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A periodic array of nanoparticles scatters electromagnetic waves in different diffraction orders, and such periodic arrangements of nanoparticles result in significant field enhancements compared to a single nanoparticle. We investigate multipole Mie resonances in MXene antennas, uncovering absorption enhancement, reflection suppression, and phase variation through analytical models, simulations, and experiments. We study lattice resonances of lossy materials, such as transition metals nickel, titanium, and tungsten, as well as metalloid germanium. We study the impact of substrate and superstrate on Rayleigh anomaly dependency, showing that the resonance peak shifts according to the surrounding medium refractive index. Exploiting these resonances can enable metasurfaces for efficient, broad-spectrum light absorption in large-scale sensing, photodetectors, and energy harvesting applications.

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Multipole Mie Resonances in MXene-Antenna Arrays

Cited by 6 publications

References 61 publications

Trapped Mode Excitation in Dielectric Metasurfaces with an Inhomogeneous Superstrate

Trapped Mode Excitation in Dielectric Metasurfaces with an Inhomogeneous Superstrate

Metasurface engineering for collective resonances, tailored emissivity, and enhanced photodetectors

Multipole Mie and lattice resonances in metasurfaces with nanoantenna arrays

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