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Using the extended discrete interaction model we investigate the tuneabilty of surface plasmon resonance in alloys and core-shell nanoparticles made from silver and gold. We show that the surface plasmon resonance of these alloys and…

A spectral technique is applied to evaluate the resonance frequencies of the full retarded scattering from spherical nanoparticles. This approach allows one to unambiguously identify the modes that are responsible of both the peaks and the…

Optics · Physics 2017-02-15 Carlo Forestiere , Giovanni Miano

We present a numerical study on geometric percolation in liquid dispersions of hard slender colloidal particles subjected to an external orienting field. In the formulation and liquid-state processing of nanocomposite materials, the…

Soft Condensed Matter · Physics 2020-02-26 Shari P. Finner , Ilian Pihlajamaa , Paul van der Schoot

Light interaction with rotating nanostructures gives rise to phenemona as varied as optical torques and quantum friction. Here we reveal that circular dichroism of rotating optically-isotropic particles has an unexpectedly strong dependence…

Mesoscale and Nanoscale Physics · Physics 2019-08-14 Deng Pan , Hongxing Xu , F. Javier García de Abajo

We develop a theoretical framework, based on a multipole, quasi-static approach, for the prediction of the localized surface plasmon resonances in Fanoshells formed via geometrical symmetry-breaking in multilayer nanoshells consisting of a…

Optics · Physics 2022-01-12 Luke C. Ugwuoke , Tjaart P. J. Krüger

We present a multi-scale model to study the attachment of spherical particles with a rigid core, coated with binding ligands and in equilibrium with the surrounding, quiescent fluid medium. This class of fluid-immersed adhesion is…

Biological Physics · Physics 2013-09-10 Sarthok Sircar , John G. Younger , David M. Bortz

The oscillations of a spherical body consisting of hot electron-nuclear plasma are considered. It is shown that there are two basic modes of oscillations. The estimation of the main frequencies of the solar core oscillation gives a…

Astrophysics · Physics 2007-05-23 B. V. Vasiliev

Spherical-cap-shaped interfacial nanobubbles (NBs) forming on hydrophobic surfaces in aqueous solutions have extensively been studied both from a fundamental point of view and due to their relevance for various practical applications. In…

Fluid Dynamics · Physics 2022-08-18 Yuliang Wang , Xiaolai Li , Shuai Ren , Hadush Tedros Alem , Lijun Yang , Detlef Lohse

Optical phonons in nanoparticles with the randomness of interatomic bonds are considered both analytically and numerically. For weak dilute disorder two qualitatively different regimes of separated and overlapped levels are observed,…

Mesoscale and Nanoscale Physics · Physics 2021-08-27 Oleg I. Utesov , Sergei V. Koniakhin , Andrey G. Yashenkin

The interplay of topological defects with curvature is studied for out-of-surface magnetic vortices in thin spherical nanoshells. In the case of easy-surface Heisenberg magnet it is shown that the curvature of the underlying surface leads…

Strongly Correlated Electrons · Physics 2013-06-10 Volodymyr P. Kravchuk , Denis D. Sheka , Robert Streubel , Denys Makarov , Oliver G. Schmidt , Yuri Gaididei

Nanoparticles levitated in vacuum can be set to spin at ultimate frequencies, limited only by the tensile strength of the material. At such high frequencies, drastic changes to the dynamics of solid-state quantum excitations are to be…

Mesoscale and Nanoscale Physics · Physics 2020-05-14 Daniel Hümmer , René Lampert , Katja Kustura , Patrick Maurer , Carlos Gonzalez-Ballestero , Oriol Romero-Isart

In the framework of the perturbation theory of the nonrelativistic quantum electrodynamics, a theory of spontaneous emission of a chiral molecule located near a chiral (bi-isotropic) spherical particle is developed. It is shown that the…

Optics · Physics 2015-06-04 Dmitry Guzatov , Vasily Klimov

Current effective medium theories for nano-shells are reviewed. A new method for calculating the effective dielectric function of a core-shell nanoparticle is presented and compared with existing theories showing clear advantages in most…

In this work, we discuss the way in which electric and magnetic dipole resonances arising in the optical scattering spectrum of non-absorbing dielectric nanospheres can be accurately approximated by means of simple explicit expressions that…

Optics · Physics 2022-02-03 F. López-Tejeira

A precise analytical treatment for predicting the behavior of nano-sized magneto-electro-elastic (MEE) antennas and resonators under incident acoustic waves requires consideration of multiphysics surface/interface effects, including…

Materials Science · Physics 2025-04-15 Mohsen Farsiani , Hossein M. Shodja

Toroidal dipole moments, which consist of enclosed circulating currents aligned along paths within a torus shape, can be experimentally achieved in metamaterials using various geometrical configurations. Here, we investigate the excitation…

Optics · Physics 2024-06-12 Tiago José Arruda

The nonlinear interaction of ultrasonic waves with a nonspherical particle may give rise to the acoustic radiation torque on the particle. This phenomenon is investigated here considering a rigid prolate spheroidal particle of subwavelength…

Fluid Dynamics · Physics 2020-04-22 Jose P. Leao-Neto , Jose H. Lopes , Glauber T. Silva

Quantum coherence is highly involved in photochemical functioning of complex molecular systems. Co-existence and intermixing of electronic and/or vibrational coherences, while never unambiguously identified experimentally, has been proposed…

Optical binding allows creation of mechanically stable nanoparticle configurations owing to formation of self-consistent optical trapping potentials. While the classical diffraction limit prevents achieving deeply subwavelength…

In this study, we have investigated the inter-sublevel optical properties of a core/shell/well/shell spherical quantum dot with the form of quantum dot-quantum well heterostructure. In order to determine the energy eigenvalues and…

Mesoscale and Nanoscale Physics · Physics 2013-05-07 Hatice Taş , Mehmet Sahin