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All-dielectric nanoantennas are a promising alternative to plasmonic optical antennas for engineering light emission because of their low-loss nature in the optical spectrum. Nevertheless, it is still challenging to manipulate directional…

Optics · Physics 2018-10-16 Tianhua Feng , Wei Zhang , Zixian Liang , Yi Xu

Directional optical sources can give rise to the directional excitation and propagation of light. The directionality of the conventional directional dipole (CDD) sources are attributed to the interference of the electric and/or magnetic…

Optics · Physics 2024-09-04 Junho Jung , Yuqiong Cheng , Wanyue Xiao , Shubo Wang

Optical forces allow manipulation of small particles and control of nanophotonic structures with light beams. Here, we describe a counter-intuitive lateral optical force acting on particles placed above a substrate, under uniform plane wave…

Optically-induced magnetic resonances in non-magnetic media have unlocked magnetic light-matter interactions and led to new technologies in many research fields. Previous proposals for the levitation of nanoscale particles without…

The radiation principle of travelling-wave type phase-reversal antennas is explained in details, unveiling the presence of magnetic-dipole radiation in addition to well-known electric dipole radiation. It is point out that such magnetic…

Classical Physics · Physics 2015-06-18 Shulabh Gupta , Li Jun Jiang , Christophe Caloz

The design of far-field radiation diagrams from combined electric and magnetic dipolar sources has recently found applications in nanophotonic metasurfaces that realize tailored reflection and refraction. Such dipolar sources also exhibit…

At optical frequencies, interactions of the electric field component of light with matter are dominating, whereas magnetic dipole transitions are inherently weak and challenging to access independently from electric dipole transitions.…

The possibility to use surface plasmon polaritons for enhancement of weak magnetic dipole transitions is analyzed theoretically and demonstrated experimentally for simple flat geometry and sine-wave profile modulated plasmonic films.…

Optics · Physics 2018-06-15 S. Mashhadi , M. Durach , D. Keene , N. Noginova

A new technique based on superposition of two speckle patterns is proposed and demonstrated for controlled modulation of the spatial polarization distribution of the resultant speckle. It is demonstrated both theoretically and…

Optics · Physics 2021-11-15 Abhijit Roy , Rakesh K. Singh , Maruthi M. Brundavanam

A metal film supports the continuum of propagating surface plasmon waves. The interaction of these waves with a dipole (nanoparticle) positioned some distance from the surface of the film can produce well defined localized plasmon modes…

Mesoscale and Nanoscale Physics · Physics 2013-10-02 E. G. Mishchenko

We investigate the radiation properties of a short horizontal dipole embedded in a uniaxial wire medium. It is shown that the uniaxial wire medium enables a super-collimation of the dipole radiation such that the radiation pattern has a…

Mesoscale and Nanoscale Physics · Physics 2015-11-23 Tiago A. Morgado , Mário G. Silveirinha

We consider two semi-infinite magnetoelectric media with constant dielectric permittivity separated by a planar interface, whose electromagnetic response is described by non-dynamical axion electrodynamics and investigate the radiation of a…

Other Condensed Matter · Physics 2022-11-08 O. J. Franca , Luis F. Urrutia

Directional radiation and scattering play an essential role in light manipulation for various applications in integrated nanophotonics, antenna and metasurface designs, quantum optics, etc. The most elemental system with this property is…

Classical Physics · Physics 2023-06-21 Yuqiong Cheng , Kayode Adedotun Oyesina , Bo Xue , Dangyuan Lei , Alex M. H. Wong , Shubo Wang

Controlling scattering and routing of chiral light at the nanoscale is important for optical information processing and imaging, quantum technologies as well as optical manipulation. Here, we introduce a concept of rotating chiral dipoles…

Optics · Physics 2025-09-25 Yuanyang Xie , Alexey V. Krasavin , Diane J. Roth , Anatoly V. Zayats

Studies of superdirective dielectric lens antennas are reported emphasizing unidirectional properties. The developed antennas are based on the higher-order transverse electric and magnetic modes present in a multilayered sphere realized…

Optics · Physics 2025-05-13 Asbjørn T. Birch , Samel Arslanagić , Richard W. Ziolkowski

We experimentally demonstrate unidirectional light transmission through two-layer nanostructured materials considering that the horizontal-to-vertical-polarization conversion efficiency in the forward direction and the…

Mesoscale and Nanoscale Physics · Physics 2019-02-14 M. Naruse , S. Ishii , J. -F. Motte , A. Drezet , S. Huant , H. Hori

Steering of magnetic nano-/microhelices by a rotating magnetic field is considered as a promising technique for controlled navigation of tiny objects through viscous fluidic environments. It has been recently demonstrated that simple…

Fluid Dynamics · Physics 2019-10-21 Kevin-Joshua Cohen , Boris Y. Rubinstein , Oded Kenneth , Alexander M. Leshansky

Surface waves can propagate on the planar interface of a linear electro-optic (EO) material and an isotropic dielectric material, for restricted ranges of the orientation angles of the EO material and the refractive index of the isotropic…

Optics · Physics 2012-08-27 S. R. Nelatury , J. A. Polo, , A. Lakhtakia

The natural source of a magnetic dipole in antennas is typically an electrically small loop, which can be utilized in conjunction with an electric dipole to realize an electrically small Huygens' antenna. However, these antennas suffer from…

Applied Physics · Physics 2025-11-24 Muhammad Rizwan Akram , Abbas Semnani

We investigate the polarization properties of emission associated with the magnetic dipole and electric dipole transitions of europium(III) coupled to an anisotropic dielectric metasurface with polarization-engineered electric and magnetic…

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