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Journal articles on the topic 'Mie modes'

Author: Grafiati

Published: 10 March 2023

Last updated: 19 July 2025

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Bulgakov, Evgeny, Konstantin Pichugin, and Almas Sadreev. "Mie Resonance Engineering in Two Disks." Photonics 8, no. 2 (2021): 49. http://dx.doi.org/10.3390/photonics8020049.

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Recently the recipes to achieve the high-Q subwavelength resonances in an isolated dielectric disk have been reported based on avoided crossing (anticrossing) of the TE resonances under variation of the aspect ratio of the disk. In a silicon disk that recipe gives an enhancement of the Q factor by one order of magnitude. In the present paper we present the approach based on engineering of the spherical Mie resonances with high orbital index in two coaxial disks by two-fold avoided crossing of the resonant modes of the disks. At the first step we select the resonant modes of single disk which are degenerate because of the opposite symmetry. Approaching of the second disk removes this degeneracy because of interaction between the disks. As a result at certain distances we realize the hybridized anti-bonding resonant modes whose morphology becomes close to the spherical Mie resonant mode with high orbital index. Respectively the Q factor of the anti-bonding resonant mode can be enhanced by three orders of magnitude compared to the case of single disk.

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Gao, Ju, Kuang Zhang, Guohui Yang, Sungtek Kahng, and Qun Wu. "Tunable Control of Mie Resonances Based on Hybrid VO2 and Dielectric Metamaterial." Symmetry 10, no. 10 (2018): 423. http://dx.doi.org/10.3390/sym10100423.

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In this paper, a tunable dielectric metamaterial absorber with temperature-based vanadium dioxide (VO2) is proposed. In contrast to previous studies, both the metal phase of VO2 and the semiconductor phase are applied to manipulate the Mie resonant modes in the dielectric cubes. By embedding VO2 in the main resonant structure, the control over Mie resonant modes in dielectric metamaterials is realized. Each resonant mode is analyzed through field distribution and explains why the phase switch of VO2 could affect the absorbance spectrum. This use of tunable materials could create another new methodology for the manipulation of the Mie resonance-based dielectric cubes and make them closer in essence to isotropic metamaterials.

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Toftul, Ivan, Kristina Frizyuk, and Mihail Petrov. "Total angular momenta quantization of dielectric sphere modes." Journal of Physics: Conference Series 2015, no. 1 (2021): 012152. http://dx.doi.org/10.1088/1742-6596/2015/1/012152.

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Abstract Spherical particles both dielectric and metallic are essential building blocks in nanophotonics. During the recent rapid development of Mie-tronic — nanophotonics devices heavily using various features of the Mie-resonances — the deep fundamental investigation of the eigenmodes of such particles by using the novel tools is still relevant and currently important. Moreover, eigenmodes of a sphere are closely related to the Vector Spherical Harmonics (VSH) which are widely used in the multipolar decomposition to analyze less symmetric structures. In this work, we study in detail the canonical spin and angular momenta (AM), helicity, and other properties of the eigenmodes of dielectric (nondispersive) and metallic (dispersive) spheres. We show that the canonical momentum density of the AM is quantized and has a close relation to the quantum picture of a single photon. Our work provides a solid platform for future studies and applications of the AM transfer from near fields of spherical particles to the matter in its vicinity.

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Ding, Lu, Ye Feng Yu, Dmitry Morits, et al. "Low loss waveguiding and slow light modes in coupled subwavelength silicon Mie resonators." Nanoscale 12, no. 42 (2020): 21713–18. http://dx.doi.org/10.1039/d0nr05248e.

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Berestennikov, A. S., Y. Li, I. V. Iorsh, A. A. Zakhidov, A. L. Rogach, and S. V. Makarov. "Beyond quantum confinement: excitonic nonlocality in halide perovskite nanoparticles with Mie resonances." Nanoscale 11, no. 14 (2019): 6747–54. http://dx.doi.org/10.1039/c8nr09837a.

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Akmansoy, Eric, and Simon Marcellin. "Negative index and mode coupling in all-dielectric metamaterials at terahertz frequencies." EPJ Applied Metamaterials 5 (2018): 10. http://dx.doi.org/10.1051/epjam/2018006.

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We elucidate the role of the mode coupling of the Mie resonances in all-dielectric metamaterials to ensure a negative effective index at terahertz frequencies. We perform a study as a function of the lattice period and of the frequency overlapping of the modes of resonance. We show that negative effective refractive index requires sufficiently strong mode coupling and that for even more strong mode coupling, the first two modes of Mie resonances are degenerate; the effective refractive index is then undetermined. We also show that it is possible to obtain near-zero, or even null, effective index with a judicious adjustment of the mode coupling. Further, we discuss the mode coupling effect with hybridization in metamaterials.

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Mcphedran, R. C., and B. Stout. "‘Killing Mie Softly’: Analytic Integrals for Complex Resonant States." Quarterly Journal of Mechanics and Applied Mathematics 73, no. 2 (2020): 119–39. http://dx.doi.org/10.1093/qjmam/hbaa004.

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Summary We consider integrals of products of Bessel functions and of spherical Bessel functions, combined with a Gaussian factor guaranteeing convergence at infinity. These integrals arise in wave and quantum mechanical scattering problems of open systems containing cylindrical or spherical scatterers, particularly when those problems are considered in the framework of complex resonant modes. Explicit representations are obtained for the integrals, building on those in the 1992 paper by McPhedran, Dawes and Scott. Attention is paid to those sums with a distributive part arising as the Gaussian tends towards the unit function. In this limit, orthogonality and normalisability of complex modes are investigated.

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Bulgakov, E., K. Pichugin, and A. Sadreev. "Interaction between dielectric particles enhances the Q-factor." Advanced Electromagnetics 8, no. 4 (2019): 108–17. http://dx.doi.org/10.7716/aem.v8i4.1292.

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We study behavior of resonant modes with a distance between two identical dielectric cylinders and disks. We reveal two basic scenarios of evolution of resonances with the distance between the cylinders. For larger distances and respectively weaker interaction of particles the resonances are bound around the Mie resonances and evolve by spiral way. For shorter distances and respectively stronger interaction the resonances bypass the Mie resonances. Both scenarios demonstrate considerable enhancement of the Q factor compared to the case of isolated particle.

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Huston, A. L., H. B. Lin, J. D. Eversole, and A. J. Campillo. "Nonlinear Mie scattering: electrostrictive coupling of light to droplet acoustic modes." Optics Letters 15, no. 21 (1990): 1176. http://dx.doi.org/10.1364/ol.15.001176.

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Lubatsch, Andreas, and Regine Frank. "Quantum Many-Body Theory for Exciton-Polaritons in Semiconductor Mie Resonators in the Non-Equilibrium." Applied Sciences 10, no. 5 (2020): 1836. http://dx.doi.org/10.3390/app10051836.

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We implement externally excited ZnO Mie resonators in a framework of a generalized Hubbard Hamiltonian to investigate the lifetimes of excitons and exciton-polaritons out of thermodynamical equilibrium. Our results are derived by a Floquet-Keldysh-Green’s formalism with Dynamical Mean Field Theory (DMFT) and a second order iterative perturbation theory solver (IPT). We find that the Fano resonance which originates from coupling of the continuum of electronic density of states to the semiconductor Mie resonator yields polaritons with lifetimes between 0.6 ps and 1.45 ps. These results are compared to ZnO polariton lasers and to ZnO random lasers. We interpret the peaks of the exciton-polariton lifetimes in our results as a sign of gain narrowing which may lead to stable polariton lasing modes in the single excited ZnO Mie resonator. This form of gain may lead to polariton random lasing in an ensemble of ZnO Mie resonators in the non-equilibrium.

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Kroychuk, Maria K., Alexander S. Shorokhov, Damir F. Yagudin, et al. "Quantum Dot Photoluminescence Enhancement in GaAs Nanopillar Oligomers Driven by Collective Magnetic Modes." Nanomaterials 13, no. 3 (2023): 507. http://dx.doi.org/10.3390/nano13030507.

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Single photon sources based on semiconductor quantum dots are one of the most prospective elements for optical quantum computing and cryptography. Such systems are often based on Bragg resonators, which provide several ways to control the emission of quantum dots. However, the fabrication of periodic structures with many thin layers is difficult. On the other hand, the coupling of single-photon sources with resonant nanoclusters made of high-index dielectric materials is known as a promising way for emission control. Our experiments and calculations show that the excitation of magnetic Mie-type resonance by linearly polarized light in a GaAs nanopillar oligomer with embedded InAs quantum dots leads to quantum emitters absorption efficiency enhancement. Moreover, the nanoresonator at the wavelength of magnetic dipole resonance also acts as a nanoantenna for a generated signal, allowing control over its radiation spatial profile. We experimentally demonstrated an order of magnitude emission enhancement and numerically reached forty times gain in comparison with unstructured film. These findings highlight the potential of quantum dots coupling with Mie-resonant oligomers collective modes for nanoscale single-photon sources development.

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Izzati, Nurul. "Tindak Tutur Ilokusi pada Poster Iklan Mie Indomie Periode 2019-2020 (Studi Analisis Pragmatik)." Diwan: Jurnal Bahasa dan Sastra Arab 13, no. 2 (2022): 116–31. http://dx.doi.org/10.15548/diwan.v13i2.713.

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This paper discusses the illocutionary speech acts of the Mie Indomie advertisement poster for the 2019-2020 period which was published on the Indomie Egypt - facebook account. This study focuses on discussing the communicative forms and functions of illocutionary speech acts contained in the Mie Indomie advertising poster for the 2019-2020 period, as well as what speech modes are used when marketing the product. All of the focus of this research will be dissected by using the theory of illocutionary speech acts proposed by Searle. The results showed that during the 2019-2020 period, the Mie Indomie company launched 18 advertising posters. Where out of these 18 advertisement posters, 12 Mie Indomie advertisement posters use declarative speech mode, 4 advertisement posters use imperative speech mode, and 2 posters use interrogative speech mode. As for the speech function, there are 7 MieIndomie advertising posters that use assertive speech functions, 7 advertising posters that use directive speech functions, and 4 advertising posters that use commissive speech functions with each communicative function.

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Minin, O. V., S. Zhou, and I. V. Minin. "Generation of Giant Magnetic Fields in a Hollow Mesoscale Sphere." JETP Letters 118, no. 3 (2023): 201–7. http://dx.doi.org/10.1134/s0021364023602038.

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The superresonance effect for a hollow dielectric sphere is numerically simulated with the Mie theory. It is shown for the first time that weakly dissipative mesoscale spheres with an air-filled cavity exhibit a high-order Fano resonance related to internal Mie modes. Superresonance in a hollow sphere is achieved by the accurate choice of the cavity radius, while for a monolithic dielectric sphere, it is ensured by the accurate choice of the outer diameter of the particle under study. In this case, the relative intensities of the resonance peaks in the optical range for both magnetic and electric fields near the sphere poles can have enormous values of 106−107, if the magnetic field magnitude exceeds that of the electric field by a factor larger than 15 for the hollow sphere with a Mie size parameter about 40.

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Veeken, Tom, Benjamin Daiber, Harshal Agrawal, et al. "Directional quantum dot emission by soft-stamping on silicon Mie resonators." Nanoscale Advances 4, no. 4 (2022): 1088–97. http://dx.doi.org/10.1039/d1na00630d.

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We present a soft-stamping method to selectively print a homogenous layer of CdSeTe/ZnS core–shell quantum dots (QDs) on top of Si nanocylinders with Mie-type resonant modes. Depending on the cylinder shape, we direct the QD emission up or down.

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Zheng, Oscar Qiu Jun. "Scribal Hands, Errors, and Intervention – Manuscript Production Approaches of the Cao Mie zhi zhen 曹蔑之陣 Manuscripts". Bamboo and Silk 7, № 2 (2024): 155–201. http://dx.doi.org/10.1163/24689246-20240005.

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Abstract This paper studies two Cao Mie zhi zhen manuscripts in the Shanghai Museum and Anhui University Warring States bamboo strip collections, examining their modes of production, scribal hands, errors, and punctuation. I show that both manuscripts’ production was based on written models and involved multiple scribes, one of whom was responsible for writing the main text, whereas others made corrections and inscribed personal remarks on the manuscripts.

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Lukens, Katherine E., Kayo Ide, Kevin Garrett, et al. "Exploiting Aeolus level-2b winds to better characterize atmospheric motion vector bias and uncertainty." Atmospheric Measurement Techniques 15, no. 9 (2022): 2719–43. http://dx.doi.org/10.5194/amt-15-2719-2022.

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Abstract. The need for highly accurate atmospheric wind observations is a high priority in the science community, particularly for numerical weather prediction (NWP). To address this need, this study leverages Aeolus wind lidar level-2B data provided by the European Space Agency (ESA) as a potential comparison standard to better characterize atmospheric motion vector (AMV) bias and uncertainty. AMV products from geostationary (GEO) and low Earth orbiting (LEO) satellites are compared with reprocessed Aeolus horizontal line-of-sight (HLOS) global winds observed in August–September 2019. Winds from two Aeolus observing modes are compared with AMVs, namely Rayleigh-clear (RAY; derived from the molecular scattering signal) and Mie-cloudy (MIE; derived from the particle scattering signal). Quality-controlled (QC'd) Aeolus winds are co-located with QC'd AMVs in space and time, and the AMVs are projected onto the Aeolus HLOS direction. Mean co-location differences (MCDs) and the standard deviation (SD) of those differences (SDCDs) are determined and analyzed. As shown in other comparison studies, the level of agreement between AMV and Aeolus wind velocities (HLOSVs) varies with the AMV type, geographic region, and height of the co-located winds, as well as with the Aeolus observing mode. In terms of global statistics, QC'd AMVs and QC'd Aeolus HLOSVs are highly correlated for both observing modes. Aeolus MIE winds are shown to have great potential value as a comparison standard to characterize AMVs, as MIE co-locations generally exhibit smaller biases and uncertainties compared to RAY co-locations. Aeolus RAY winds contribute a substantial fraction of the total SDCDs in the presence of clouds where co-location/representativeness errors are also large. Stratified comparisons with Aeolus HLOSVs are consistent with known AMV bias and uncertainty in the tropics, NH extratropics, the Arctic, and at mid- to upper-levels in clear and cloudy scenes. AMVs in the SH/Antarctic generally exhibit larger-than-expected MCDs and SDCDs, most probably due to larger AMV height assignment errors and co-location/representativeness errors in the presence of high wind speeds and strong vertical wind shear, particularly for RAY comparisons.

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Maruyama, H., J. T. Y. Tse, S. Murai, and K. Tanaka. "Fabricating SiC nanovoid arrays for Mie-tronics." Japanese Journal of Applied Physics 64, no. 3 (2025): 03SP54. https://doi.org/10.35848/1347-4065/adaecc.

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Abstract We fabricated a periodic SiC nanovoid array embedded in the flexible polymer, which is applicable as a sticker to stick to any clean surfaces to control light. Starting from the epitaxial 3C-SiC thin films on Si substrates, the nanovoid array was fabricated by combining nanoimprint lithography and dry etching. After coating the nanovoid with a polydimethylsiloxane (PDMS) film, the Si substrate on the backside was etched away to obtain the free-standing SiC nanovoid array embedded in the PDMS film. The optical measurements show that the resultant nanovoid array sticker supports wave-guiding modes in the SiC layer about 650 nm thick. Photoluminescence enhancement was demonstrated by depositing the luminous layer on top of the nanovoid array. Compared to the same luminous layer on the structure-less flat substrate, the photoluminescence intensity on the nanovoid array was enhanced up to about 8 times. The present method is applicable to fabricate various optical devices using SiC.

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Gantzounis, G., Nikos Papanikolaou, and Nikos Stefanou. "Nonlinear interactions between high-Q optical and acoustic modes in dielectric particles." PHYSICAL REVIEW B 84 (September 29, 2011): 104303. https://doi.org/10.1103/PhysRevB.84.104303.

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The interaction between acoustic breathing modes and optical Mie resonances in a spherical particle made of a chalcogenide glass material is investigated by means of rigorous calculations, correct to any order in the acousto-optic coupling parameter. Our results reveal the occurrence of strong effects beyond the linear-response approximation, which lead to enhanced modulation of light by acoustic waves through multiphonon exchange mechanisms when both photons and phonons have a very long lifetime inside the particle.

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Fujii, Minoru, and Hiroshi Sugimoto. "(Invited) Mie Resonant Silicon Nanospheres for Scattering-Fluorescence Dual-Mode Imaging, Medical Diagnosis and Photothermal Therapy." ECS Meeting Abstracts MA2024-01, no. 22 (2024): 1336. http://dx.doi.org/10.1149/ma2024-01221336mtgabs.

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In recent years, a variety of multimodal and multifunctional nanoparticles have been developed for biomedical applications such as cellular imaging, biomolecule detection, and medical diagnosis and treatment. A common platform of multifunction nanoparticles is metallic ones with localized surface plasmon resonances. A drawback of metallic nanoparticles for biomedical applications is the Ohmic loss that leads to fluorescence quenching of attached molecules and local heating under light irradiation. We have been developing metal-free nanoprobes capable of scattering/fluorescence dual-mode imaging, medical diagnosis and photothermal therapy. The nanoprobes are composed of a silicon nanosphere core having Mie resonances in the visible to near infrared range and a fluorophore-doped silica shell [1, 2]. In this presentation, we first show scattering properties of the Mie resonant Si nanospheres. We then discuss the dark-field scattering and photoluminescence images/spectra of the core-shell nanoparticles and demonstrate that the fluorescence spectra are strongly modified by the Mie modes of a silicon nanosphere core by the Purcell effect. We demonstrate in the in vitro imaging of human cancer cells that the developed core-shell nanoparticles work as scattering/fluorescence dual-mode imaging nanoprobes. We then add the capability of glutathione sensing to the core-shell nanoprobes. It is known that the glutathione level tends to be elevated in some kinds of cancers and thus it can be used as a biomarker. To add the capability of glutathione sensing, we cover the surface of the core-shell nanoprobes with manganese oxide (MnO2). MnO2 quenches the fluorescence of the core-shell nanoparticles, and it is recovered if the MnO2 shell is resolved by the reaction with glutathione. Therefore, we can monitor the glutathione level by the fluorescence intensity. The advantage of the dual-mode imaging is that the glutathione level can be monitored by the fluorescence intensity, while the particle position is always monitored by the scattering image. Finally, we discuss the capability of Si nanospheres for photothermal therapy. We show that Si nanospheres exhibit efficient light absorption at the wavelengths of magnetic type Mie resonances such as magnetic dipole (MD) and magnetic quadrupole (MQ) resonances, and can be heated up very easily by light irradiation. An advantage of Si nanospheres compared to plasmonic nanoparticles as a light absorber for photothermal therapy is the much narrower resonances. Because of the narrow resonance, we can easily switch heating and non-heating modes. This means that if we want to heat up a nanoparticle, we can choose a specific wavelength that corresponds to e.g., the MQ mode, while if we want to excite fluorophores without heating, we can choose off-resonance wavelength for the excitation. Another advantage of Si nanospheres is the capability to monitor the temperature by Raman scattering. We show the relation between the temperature, wavelength and the size of silicon nanospheres and discuss the Mie modes suitable for the photothermal therapy application. References [1] H. Sugimoto, et. al., "Mie Resonator Color Inks of Monodispersed and Perfectly Spherical Crystalline Silicon Nanoparticles", Advanced Optical Materials, 8 (2020) 2000033. [2] M. Adachi, et. al., “Fluorophore-Decorated Mie Resonant Silicon Nanosphere for Scattering/Fluorescence Dual-Mode Imaging”, Small, 19 (2023) 2207318.

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Granchi, Nicoletta, Michele Montanari, Andrea Ristori, et al. "Near-field hyper-spectral imaging of resonant Mie modes in a dielectric island." APL Photonics 6, no. 12 (2021): 126102. http://dx.doi.org/10.1063/5.0070626.

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Weiss, D. S., V. Sandoghdar, J. Hare, V. Lefèvre-Seguin, J. M. Raimond, and S. Haroche. "Splitting of high-Q Mie modes induced by light backscattering in silica microspheres." Optics Letters 20, no. 18 (1995): 1835. http://dx.doi.org/10.1364/ol.20.001835.

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Ignatyeva, Daria O., and Vladimir I. Belotelov. "Magneto-Optical Spectroscopy of Short Spin Waves by All-Dielectric Metasurface." Nanomaterials 12, no. 23 (2022): 4180. http://dx.doi.org/10.3390/nano12234180.

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The optical method of spin dynamics measurements via the detection of various magneto-optical effects is widely used nowadays. Besides it being a convenient method to achieve time-resolved measurements, its spatial resolution in the lateral direction is limited by a diffraction limit for the probe light. We propose a novel approach utilizing a Mie-resonance-based all-dielectric metasurface that allows for the extraction of a signal of a single submicron-wavelength spin wave from the wide spin precession spectra. This approach is based on the possibility of designing a metasurface that possesses nonuniform magneto-optical sensitivity to the different nanoscale regions of the smooth magnetic film due to the excitation of the Mie modes. The metasurface is tuned to be unsensitive to the long-wavelength spin precession, which is achieved by the optical resonance-caused zeroing of the magneto-optical effect for uniform magnetization in the vicinity of the resonance. At the same time, such a Mie-supporting metasurface exhibits selective sensitivity to a narrow range of short wavelengths equal to its period.

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TEIXEIRA RABELO, J. N., E. S. CARDOSO, and V. I. ZUBOV. "EFFECT OF TEMPERATURE ON INTRINSIC LOCALIZED MODES IN ANHARMONIC LATTICES." Modern Physics Letters B 14, no. 27n28 (2000): 1001–7. http://dx.doi.org/10.1142/s0217984900001233.

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We study the effect of temperature on Intrinsic Localized Modes (ILM) in anharmonic lattices. An approach is proposed based on the Method of the Unsymmetrized Self-Consistent Field (USF). The special case of an odd-parity mode in an anharmonic linear chain with Mie–Lennard–Jones potential is investigated in more detail. We find that in the weak anharmonic approximation, an increasing of temperature does not change the pattern of the mode, leading to a very small decreasing of the displacement amplitudes and a decreasing of the mode frequency. The frequency of the mode increases with increasing of both the repulsion and attraction indexes. This effect is more sensitive to the repulsion index.

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de Ceglia, Domenico, Luca Carletti, Maria Antonietta Vincenti, Costantino De Angelis, and Michael Scalora. "Second-Harmonic Generation in Mie-Resonant GaAs Nanowires." Applied Sciences 9, no. 16 (2019): 3381. http://dx.doi.org/10.3390/app9163381.

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We investigate the enhancement of second-harmonic generation in cylindrical GaAs nanowires. Although these nanostructures confine light in two dimensions, power conversion efficiencies on the order of 10 − 5 with a pump peak intensity of ~ 1 GW / cm 2 are possible if the pump and the second-harmonic fields are coupled to the Mie-type resonances of the nanowire. We identify a large range of nanowire radii in which a double-resonance condition, i.e., both the pump and the second-harmonic fields excite normal modes of the nanowire, induces a high-quality-factor peak of conversion efficiency. We show that second-harmonic light can be scattered with large efficiency even if the second-harmonic photon energy is larger than 1.42 eV, i.e., the electronic bandgap of GaAs, above which the material is considered opaque. Finally, we evaluate the efficiency of one-photon absorption of second-harmonic light and find that resonant GaAs nanowires absorb second-harmonic light in the near-field region almost at the same rate at which they radiate second-harmonic light in the far-field region.

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Colas des Francs, G., S. Derom, R. Vincent, A. Bouhelier, and A. Dereux. "Mie Plasmons: Modes Volumes, Quality Factors, and Coupling Strengths (Purcell Factor) to a Dipolar Emitter." International Journal of Optics 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/175162.

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Using either quasistatic approximation or exact Mie expansion, we characterize the localized surface plasmons supported by a metallic spherical nanoparticle. We estimate the quality factorQnand define the effective volumeVnof thenth mode in such a way that coupling strength with a neighbouring dipolar emitter is proportional to the ratioQn/Vn(Purcell factor). The role of Joule losses, far-field scattering, and mode confinement in the coupling mechanism is introduced and discussed with simple physical understanding, with particular attention paid to energy conservation.

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Zhang, Ting, Eun Bok, Motonobu Tomoda, et al. "Compact acoustic metamaterial based on the 3D Mie resonance of a maze ball with an octahedral structure." Applied Physics Letters 120, no. 16 (2022): 161701. http://dx.doi.org/10.1063/5.0084030.

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Acoustic metamaterials (AMs) offer ever-expanding possibilities for manipulating sound waves. Potential applications include diagnostic medical imaging, super-absorption, acoustic sensing, and acoustic stealth. In spite of recent progress, the investigation of AMs with a three-dimensional (3D) response is lagging behind, in particular for those that exhibit an isotropic response. Here, we demonstrate a highly compact subwavelength maze-like multi-shell plastic sphere, which generates Mie resonances with isotropic monopolar and anisotropic dipole, quadrupole, and octupole modes at low frequencies for airborne sound, based on an octahedral structure. Eigenmode analysis shows that the proposed maze ball exhibits a negative bulk modulus at the monopole Mie resonance frequency in the absence of viscous losses, which is a signature of strong transmission blocking. With a diameter of 0.17 λ and a volume filling factor of 13.5%, a constructed single 3D maze ball reduces the experimentally-measured transmitted acoustic energy by 67%, limited mainly by viscous losses. With optimized fabrication, the proposed 3D Mie resonator should provide a versatile approach for the manipulation of sound waves on a subwavelength scale, and lead to the realization of practical 3D metamaterial devices.

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Adl, Hamid Pashaei, Setatira Gorji, Andrés F. Gualdrón-Reyes, Iván Mora-Seró, Isaac Suárez, and Juan P. Martínez-Pastor. "Enhanced Spontaneous Emission of CsPbI3 Perovskite Nanocrystals Using a Hyperbolic Metamaterial Modified by Dielectric Nanoantenna." Nanomaterials 13, no. 1 (2022): 11. http://dx.doi.org/10.3390/nano13010011.

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In this work, we demonstrate, theoretically and experimentally, a hybrid dielectric-plasmonic multifunctional structure able to provide full control of the emission properties of CsPbI3 perovskite nanocrystals (PNCs). The device consists of a hyperbolic metamaterial (HMM) composed of alternating thin metal (Ag) and dielectric (LiF) layers, covered by TiO2 spherical MIE nanoresonators (i.e., the nanoantenna). An optimum HMM leads to a certain Purcell effect, i.e., an increase in the exciton radiative rate, but the emission intensity is reduced due to the presence of metal in the HMM. The incorporation of TiO2 nanoresonators deposited on the top of the HMM is able to counteract such an undesirable intensity reduction by the coupling between the exciton and the MIE modes of the dielectric nanoantenna. More importantly, MIE nanoresonators result in a preferential light emission towards the normal direction to the HMM plane, increasing the collected signal by more than one order of magnitude together with a further increase in the Purcell factor. These results will be useful in quantum information applications involving single emitters based on PNCs together with a high exciton emission rate and intensity.

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Diaz-Valencia, B. F., J. R. Mejía-Salazar, and N. Porras-Montenegro. "Absorption effects on the Mie plasmon-polariton modes in two-dimensional plasmonic photonic crystals." Superlattices and Microstructures 85 (September 2015): 608–14. http://dx.doi.org/10.1016/j.spmi.2015.05.046.

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Wang, Xiaowei, Leonard C. Kogos, and Roberto Paiella. "Giant distributed optical-field enhancements from Mie-resonant lattice surface modes in dielectric metasurfaces." OSA Continuum 2, no. 1 (2018): 32. http://dx.doi.org/10.1364/osac.2.000032.

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Shen, Fei, Ning An, Yifei Tao, Hongping Zhou, Zhaoneng Jiang, and Zhongyi Guo. "Anomalous forward scattering of gain-assisted dielectric shell-coated metallic core spherical particles." Nanophotonics 6, no. 5 (2016): 1063–72. http://dx.doi.org/10.1515/nanoph-2016-0141.

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AbstractWe have investigated the scattering properties of an individual core-shell nanoparticle using the Mie theory, which can be tuned to support both electric and magnetic modes simultaneously. In general, the suppression of forward scattering can be realized by the second Kerker condition. Here, a novel mechanism has to be adopted to explain zero-forward scattering, which originates from the complex interactions between dipolar and quadrupolar modes. However, for lossy and lossless core-shell spherical nanoparticles, zero-forward scattering can never be achieved because the real parts of Mie expansion coefficients are always positive. By adding proper gain in dielectric shell, zero-forward scattering can be found at certain incident wavelengths, which means that all electric and magnetic responses in Mie scattering can be counteracted totally in the forward direction. In addition, if the absolute values of dipolar and quadrupolar terms are in the same order of magnitude, the local scattering minimum and maximum can be produced away from the forward and backward directions due to the interacting effect between the dipolar and quadrupolar terms. Furthermore, by adding suitable gain in shell, super-forward scattering can also be realized at certain incident wavelengths. We also demonstrated that anomalously weak scattering or superscattering could be obtained for the core-shell nanoparticles with suitable gain in shell. In particular, for such a choice of suitable gain in shell, we can obtain zero-forward scattering and anomalously weak scattering at the same wavelength as well as super-forward scattering at another wavelength. These features may provide new opportunities for cloaking, plasmonic lasers, optical antennas, and so on.

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Salma, Housni, and Machrafi Mustapha. "L'IMPACT DE LA COVID-19 SUR LE COMPORTEMENT D'ACHAT EN LIGNE DES CONSOMMATEURS DE LA GÉNÉRATION Y ET Z AU MAROC." International Journal of Trade and Management 1, no. 1 (2022): 100–111. https://doi.org/10.5281/zenodo.6564120.

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Depuis l’apparition de la Covid-19, le Maroc a mis en &oelig;uvre plusieurs actions et mesures sanitaire afin de contrôler limiter la propagation de cette pandémie. Au milieu de cette pandémie de Covid-19 (également appelé coronavirus), les gens ont été confrontés à de nombreux changements en termes de modes de vie, d'habitudes et de consommation en raison des mesures sanitaires prises par les autorités. Pendant la période du confinement, le commerce en ligne a battu tous ses records au Maroc. Cette pandémie qui a bouleversé le mode de vie des citoyens présente une aubaine pour l’achat en ligne au Maroc. En effet, certains consommateurs, qui n'utilisaient pas Internet pour leurs achats quotidiens, ont pris pendant le confinement de nouvelles habitudes qui pourraient perdurer même après cette période. Le nombre de consommateurs a augmenté sur les sites d'achat en ligne.  L’objectif de cette recherche est d’étudier l’impact de la Covid-19 sur le comportement d’achat en ligne des consommateurs marocains en se focalisant sur les consommateurs de la génération Y et Z. Ces deux générations sont les plus familiarisées avec l’utilisation de la technologie notamment les ordinateurs, les smartphones etc. Les jeunes Y et Z sont similaires dans le point où ils adoptent internet dans leurs modes de vie ne cesse que leur parcours académique qui était caractérisés par la présence d’Internet.

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Zhang, Xing Fang, and Feng Shou Liu. "Multipolar Surface Plasmon Peaks in Gold Nanoshells." Applied Mechanics and Materials 730 (January 2015): 137–40. http://dx.doi.org/10.4028/www.scientific.net/amm.730.137.

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The intensities of the dipole, quadrupole and octupole modes for gold nanoshells have been investigated with various dielectric constants for the embedding medium and with various sizes of the nanoshells by means of Mie theory. With the increase in the dielectric constant of embedding medium, it is found that the intensities of all modes become stronger first, and then the higher mode starts to become weak. We also observe with decreasing the core size of a nanoshell with a fixed outer radius, a larger dielectric constant for the embedding medium is needed corresponding to the change of higher mode intensities from stronger to weaker. We have ascribed the changes of the dipole, quadrupole and octupole modes to the competition among the variations of induced surface charges, conduction electrons and oscillation electrons.

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Kreps, Stanislav, Vladimir Shuvayev, Mark Douvidzon, et al. "Coupled spherical-cavities." AIP Advances 12, no. 12 (2022): 125022. http://dx.doi.org/10.1063/5.0084815.

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In this work, we study theoretically and experimentally optical modes of photonic molecules—clusters of optically coupled spherical resonators. Unlike previous studies, we do not use stems to hold spheres in their positions relying, instead, on optical tweezers to maintain desired structures. The modes of the coupled resonators are excited using a tapered fiber and are observed as resonances with a quality factor as high as 107. Using the fluorescent mapping technique, we observe families of coupled modes with similar spatial and spectral shapes repeating every free spectral range (a spectral separation between adjacent resonances of individual spheres). Experimental results are compared with the results of numerical simulations based on a multi-sphere Mie theory. This work opens the door for developing large arrays of coupled high-Q spherical resonators.

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Lubatsch, Andreas, and Regine Frank. "A Self-Consistent Quantum Field Theory for Random Lasing." Applied Sciences 9, no. 12 (2019): 2477. http://dx.doi.org/10.3390/app9122477.

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The spatial formation of coherent random laser modes in strongly scattering disordered random media is a central feature in the understanding of the physics of random lasers. We derive a quantum field theoretical method for random lasing in disordered samples of complex amplifying Mie resonators which is able to provide self-consistently and free of any fit parameter the full set of transport characteristics at and above the laser phase transition. The coherence length and the correlation volume respectively is derived as an experimentally measurable scale of the phase transition at the laser threshold. We find that the process of stimulated emission in extended disordered arrangements of active Mie resonators is ultimately connected to time-reversal symmetric multiple scattering in the sense of photonic transport while the diffusion coefficient is finite. A power law is found for the random laser mode diameters in stationary state with increasing pump intensity.

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Zhu, Huihui, Xufeng Jing, and Pengwei Zhou. "Strong dipole and higher multi-pole Mie resonance modes with all-dielectric nanoring metasurfaces structure." Superlattices and Microstructures 113 (January 2018): 592–99. http://dx.doi.org/10.1016/j.spmi.2017.11.045.

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Shamkhi, H. K., and A. Canós Valero. "Multifrequency superscattering driven by symmetry-reduced resonators." Journal of Physics: Conference Series 2172, no. 1 (2022): 012002. http://dx.doi.org/10.1088/1742-6596/2172/1/012002.

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Abstract We unveil novel mechanisms to achieve superscattering by investigating the resonances’ profile of non-Hermitian Hamiltonian structures lacking spherical symmetry. We show that superscattering can be obtained within a single scattering channel due to a contribution of a single strongly-coupled mode. Such phenomenon can’t be observed in Mie-based resonators. We then spatially and spectrally engineer modes of multi-resonators in a cluster to realize broadband superscattering with ultra-strong resonances at several frequency points.

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Al Sharif, Merilin, Petko Alov, Vessela Vitcheva, Ilza Pajeva та Ivanka Tsakovska. "Modes-of-Action Related to Repeated Dose Toxicity: Tissue-Specific Biological Roles of PPARγLigand-Dependent Dysregulation in Nonalcoholic Fatty Liver Disease". PPAR Research 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/432647.

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Comprehensive understanding of the precise mode of action/adverse outcome pathway (MoA/AOP) of chemicals becomes a key step towards superseding the current repeated dose toxicity testing methodology with new generation predictive toxicology tools. The description and characterization of the toxicological MoA leading to non-alcoholic fatty liver disease (NAFLD) are of specific interest, due to its increasing incidence in the modern society. Growing evidence stresses on the PPARγligand-dependent dysregulation as a key molecular initiating event (MIE) for this adverse effect. The aim of this work was to analyze and systematize the numerous scientific data about the steatogenic role of PPARγ. Over 300 papers were ranked according to preliminary defined criteria and used as reliable and significant sources of data about the PPARγ-dependent prosteatotic MoA. A detailed analysis was performed regarding proteins which PPARγ-mediated expression changes had been confirmed to be prosteatotic by most experimental evidence. Two probable toxicological MoAs from PPARγligand binding to NAFLD were described according to the Organisation for Economic Cooperation and Development (OECD) concepts: (i) PPARγactivation in hepatocytes and (ii) PPARγinhibition in adipocytes. The possible events at different levels of biological organization starting from the MIE to the organ response and the connections between them were described in details.

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Melik-Gaykazyan, Elizaveta V., Maxim R. Shcherbakov, Alexander S. Shorokhov, et al. "Third-harmonic generation from Mie-type resonances of isolated all-dielectric nanoparticles." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2090 (2017): 20160281. http://dx.doi.org/10.1098/rsta.2016.0281.

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Subwavelength silicon nanoparticles are known to support strongly localized Mie-type modes, including those with resonant electric and magnetic dipolar polarizabilities. Here we compare experimentally the efficiency of the third-harmonic generation from isolated silicon nanodiscs for resonant excitation at the two types of dipolar resonances. Using nonlinear spectroscopy, we observe that the magnetic dipolar mode yields more efficient third-harmonic radiation in contrast to the electric dipolar (ED) mode. This is further supported by full-wave numerical simulations, where the volume-integrated local fields and the directly simulated nonlinear response are shown to be negligible at the ED resonance compared with the magnetic one. This article is part of the themed issue ‘New horizons for nanophotonics’.

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Molet, Pau, Luz Karimé Gil-Herrera, Juan Luis Garcia-Pomar, et al. "Large area metasurfaces made with spherical silicon resonators." Nanophotonics 9, no. 4 (2020): 943–51. http://dx.doi.org/10.1515/nanoph-2020-0035.

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AbstractHigh-index dielectric nanostructures have emerged as an appealing complement to plasmonic nanostructures, offering similar light management capabilities at the nanoscale but free from the inherent optical losses. Despite the great interest in these all-dielectric architectures, their fabrication still requires cumbersome fabrication techniques that limit their implementation in many applications. Hence, the great interest in alternative scalable procedures. Among those, the fabrication of silicon spheres is at the forefront, with several routes available in the literature. However, the exploitation of the Mie modes sustained by these silicon resonators is limited over large areas by polydispersity or a lack of long-range order. Here, we present an all-dielectric metamaterial fabricated with a low cost and highly scalable technique: a combination of soft imprinting nanolithography and chemical vapor deposition. The resulting all-dielectric metasurface is composed of an array of silicon hemispheres on top of a high refractive index dielectric substrate. This architecture allows the exploitation of high-quality Mie resonances at a large scale due to the high monodispersity of the hemispheres organized in a single crystal two-dimensional lattice. The optical response of the metasurface can be engineered by the design parameters of the nanoimprinted structure. We further demonstrate the potential of this platform to enhance light emission by coupling dye molecules to the sustained Mie resonances and measuring both an eight-fold amplified signal and a triple lifetime reduction.

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Li, Wang, and Zhou. "Adjusting Electric Field Intensity Using Hybridized Dielectric Metamolecule." Symmetry 11, no. 10 (2019): 1285. http://dx.doi.org/10.3390/sym11101285.

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In this paper, we report on achieving the hybridization effect in a Mie-based dielectric metamolecule and provide its physically intuitive picture. Hybridization results in the splitting of the initial overlapping resonance dips, thus leading to two new collective resonance modes. It was observed via the simulated displacement field distribution that the two modes behave as the in-phase and out-of-phase oscillation of two meta-atoms, thus enhancing and suppressing the intensity of the electric field at the gap between two meta-atoms. Moreover, since the two hybridized modes are caused by the interaction effect, the intensities of the electric field can be adjusted by several external factors, like applied forces and temperature. Taking advantage of this easy-equipped dielectric meta-device, certain zones in it can be applied to receive amplified signals and shielded noises of different frequencies in microwave communication fields. Moreover, due to the function of enhancing electric field intensities, it is also promising in wireless charging technology.

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Rahman, Md Aziz Ar, Shukui Zhang, and Hani E. Elsayed-Ali. "Quantum efficiency enhancement in simulated nanostructured negative electron affinity GaAs photocathodes." Journal of Applied Physics 133, no. 2 (2023): 023105. http://dx.doi.org/10.1063/5.0130884.

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Nanostructured negative electron affinity GaAs photocathodes for a polarized electron source are studied using finite difference time domain optical simulation. The structures studied are nanosquare columns, truncated nanocones, and truncated nanopyramids. Mie-type resonances in the 700–800 nm waveband, suitable for generation of polarized electrons, are identified. At resonance wavelengths, the nanostructures can absorb up to 99% of the incident light. For nanosquare columns and truncated nanocones, the maximum quantum efficiency (QE) at 780 nm obtained from simulation is 27%, whereas for simulated nanopyramids, the QE is ∼21%. The high photocathode quantum efficiency is due to the shift of Mie resonance toward the longer wavelength, leading to increased light absorption. The field profile distribution shows the excitation of dipole and quadrupole modes within the nanostructures at resonant frequencies. This leads to enhanced photoabsorption and photoelectron generation closer to emission surfaces than for a flat photocathode. The enhanced photoabsorption and reduced electron transport distance for the nanostructured photocathode enhance its QE compared to that for the flat surface wafer.

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Tenenev, V. A., T. Raeder, and A. A. Chernova. "Incorporation of Fluid Compressibility into the Calculation of the Stationary Mode of Operation of a Hydraulic Device at High Fluid Pressures." Nelineinaya Dinamika 17, no. 2 (2021): 195–209. http://dx.doi.org/10.20537/nd210205.

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This paper is concerned with assessing the correctness of applying various mathematical models for the calculation of the hydroshock phenomena in technical devices for modes close to critical parameters of the fluid. We study the applicability limits of the equation of state for an incompressible fluid (the assumption of constancy of the medium density) to the simulation of processes of the safety valve operation for high values of pressures in the valve. We present a scheme for adapting the numerical method of S. K. Godunov for calculation of flows of incompressible fluids. A generalization of the method for the Mie – Grüneisen equation of state is made using an algorithm of local approximation. A detailed validation and verification of the developed numerical method is provided, and relevant schemes and algorithms are given. Modeling of the hydroshock phenomenon under the valve actuation within the incompressible fluid model is carried out by the openFoam software. The comparison of the results for the weakly compressible

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RAMÍREZ-RODRÍGUEZ, L. P., M. CORTEZ-VALADEZ, J. G. BOCARANDO-CHACON, et al. "PLASMON RESONANCE AND RAMAN MODES IN Pb NANOPARTICLES OBTAINED IN EXTRACT OF OPUNTIA FICUS-INDICA PLANT." Nano 09, no. 06 (2014): 1450070. http://dx.doi.org/10.1142/s1793292014500702.

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Colloidal nanoparticles were obtained by green synthesis, embedded in the Opuntia ficus-indica plant extract. Optical measurements allowed us to detect two absorption bands centered in 230 nm and 298 nm. Agglomerates of Pb nanoparticles have size in the range 2–8 nm. The effective absorption cross section of spherical Pb nanoparticles was calculated by applying the Mie theory for colloidal systems and compared to optical absorption measurements of Pb nanoparticles. The Raman spectrum of the samples after the reduction of Pb , shows a band at low wavenumbers centered at 116 cm-1. Similar bands have been assigned to small Pb and Ag clusters in other experimental results. Additionally, we used the density functional theory (DFT) as well as semi-empirical methods to assign this band to radial breathing modes of Pb metal nanoparticles.

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Peng, Y., K. von Salzen, and J. Li. "Simulation of mineral dust aerosol with Piecewise Log-normal Approximation (PLA) in CanAM4-PAM." Atmospheric Chemistry and Physics 12, no. 15 (2012): 6891–914. http://dx.doi.org/10.5194/acp-12-6891-2012.

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Abstract. A new size-resolved dust scheme based on the numerical method of piecewise log-normal approximation (PLA) was developed and implemented in the fourth generation of the Canadian Atmospheric Global Climate Model with the PLA Aerosol Model (CanAM4-PAM). The total simulated annual global dust emission is 2500 Tg yr−1, and the dust mass load is 19.3 Tg for year 2000. Both are consistent with estimates from other models. Results from simulations are compared with multiple surface measurements near and away from dust source regions, validating the generation, transport and deposition of dust in the model. Most discrepancies between model results and surface measurements are due to unresolved aerosol processes. Biases in long-range transport are also contributing. Radiative properties of dust aerosol are derived from approximated parameters in two size modes using Mie theory. The simulated aerosol optical depth (AOD) is compared with satellite and surface remote sensing measurements and shows general agreement in terms of the dust distribution around sources. The model yields a dust AOD of 0.042 and dust aerosol direct radiative forcing (ADRF) of −1.24 W m−2 respectively, which show good consistency with model estimates from other studies.

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Wang, Jiao, Tianrong Zhan, Gaoshan Huang, Xugao Cui, Xinhua Hu, and Yongfeng Mei. "Tubular oxide microcavity with high-index-contrast walls: Mie scattering theory and 3D confinement of resonant modes." Optics Express 20, no. 17 (2012): 18555. http://dx.doi.org/10.1364/oe.20.018555.

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Okada, Naoki, and James B. Cole. "Simulation of whispering gallery modes in the Mie regime using the nonstandard finite-difference time domain algorithm." Journal of the Optical Society of America B 27, no. 4 (2010): 631. http://dx.doi.org/10.1364/josab.27.000631.

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Saerens, Grégoire, Ngoc My Hanh Duong, Alexander S. Solntsev, et al. "Spontaneous Parametric Down-Conversion from GaAs Nanowires at Telecom Wavelength." EPJ Web of Conferences 266 (2022): 08010. http://dx.doi.org/10.1051/epjconf/202226608010.

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We report on the generation of photon pairs at 1550 nm from free-standing epitaxially grown self-assisted micrometre long GaAs nanowires. The efficiency of the spontaneous parametric down-conversion process has a rate of 320 GHz/Wm normalized to the transmission of the setup, the pump intensity, and the volume of the nanostructure. GaAs is a high index dielectric that can support electromagnetic Mie modes, therefore we model how shorter nanowires could improve the second-harmonic signal and we found that sub-micro long nanowires (600 nm length and 250 nm diameter) can support quality factors up to 15 at the pump wavelength (780 nm). We anticipate that the near field enhancement compared to micrometre long nanowires will boost the second-harmonic generation and, correspondingly, the biphoton rate efficiency.

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Peng, Y., K. von Salzen, and J. Li. "Simulation of mineral dust aerosol with piecewise log-normal approximation (PLA) in CanAM4-PAM." Atmospheric Chemistry and Physics Discussions 11, no. 9 (2011): 26477–520. http://dx.doi.org/10.5194/acpd-11-26477-2011.

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Abstract. A new size-resolved dust scheme based on the numerical method of piecewise log-normal approximation (PLA) was developed and implemented in the fourth generation of the Canadian Atmospheric Global Climate Model with the PLA Aerosol Module (CanAM4-PAM). The total simulated annual mean dust burden is 37.8 mg m−2 for year 2000, which is consistent with estimates from other models. Results from simulations are compared with multiple surface measurements near and away from dust source regions, validating the generation, transport and deposition of dust in the model. Most discrepancies between model results and surface measurements are due to unresolved aerosol processes. Radiative properties of dust aerosol are derived from approximated parameters in two size modes using Mie theory. The simulated aerosol optical depth (AOD) is compared with several satellite observations and shows good agreements. The model yields a dust AOD of 0.042 and total AOD of 0.126 for the year 2000. The simulated aerosol direct radiative forcings (ADRF) of dust and total aerosol over ocean are −1.24 W m−2 and −4.76 W m−2 respectively, which show good consistency with satellite estimates for the year 2001.

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Gomes, Jorge Pereira, and H. Lienhart. "Fluid–structure interaction-induced oscillation of flexible structures in laminar and turbulent flows." Journal of Fluid Mechanics 715 (January 9, 2013): 537–72. http://dx.doi.org/10.1017/jfm.2012.533.

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AbstractSelf-excitation of the motion of a structure has become a prominent aspect of engineering projects over recent years as designers are using materials at their limits, causing structures to become progressively lighter, more flexible and, therefore, prone to vibrate. Stimulated by the increasing interest in fluid–structure interaction (FSI) problems, this study investigated the instability and consequent FSI-induced self-excited oscillation of flexible structures in uniform flows at Reynolds numbers between $10$ and $1. 69\times 1{0}^{5} $. The investigations were performed in both water and a highly viscous syrup ($\nu = 1. 64\times 1{0}^{- 4} ~{\mathrm{m} }^{2} ~{\mathrm{s} }^{- 1} $) and considered three structures of different geometries. The results were conclusive in showing that the motion of the structure was characterized by a sequence of oscillation modes as a function of the characteristics of the structure and flow properties. In addition, it was possible to identify the self-excitation mechanisms as being of the instability-induced excitation (IIE) or movement-induced excitation (MIE) types. IIE was observed to be the most dominant mechanism of excitation at lower velocities and it was defined by a direct relation between the flow fluctuation and natural frequencies of the structure. For that reason, IIE was strongly determined by the geometry of the front body of the structure. At higher velocities, the amplitudes of the flow disturbances generated by the structure movement increased and excitations of the MIE type became predominant for all structures. The MIE mechanism was found to be weakly influenced by the shape of the structure but very sensitive to its dynamic characteristics and to the properties of the fluid, especially the Reynolds number.

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Toftul, Ivan, Mihail Petrov, Romain Quidant, and Yuri Kivshar. "Optical Supertorque Induced by Mie-Resonant Modes." ACS Photonics, May 8, 2025. https://doi.org/10.1021/acsphotonics.5c00134.

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