Results 71 to 80 of about 906,320 (164)
STEM‐EELS and full‐wave FDTD reveal electron‐driven surface‐polariton modes at buried Au/oxide/Si interfaces with 10 nm SiO2 or Al2O3 spacers. Extinction is dominated by non‐radiative absorption, while oxide permittivity shifts the resonance and controls evanescent‐field penetration across the spacer into silicon.
Humaira Zafar +6 more
wiley +1 more source
Probing Strong Coupling in Core–Shell Nanoparticles With Fast Electron Beams
An exact analytic formalism for evaluating electron‐energy loss and cathodoluminescence probabilities for core–shell nanoparticles explored by electron‐beam spectroscopies is derived. The formalism is exploited to understand strong exciton–plasmon and exciton–Mie mode coupling in nanophotonic architectures.
Annika Brandt +3 more
wiley +1 more source
Scattering Detection Of A Solenoidal Poynting Vector Field
The Poynting vector S plays a central role in electrodynamics as it is directly related to the power and the momentum carried by an electromagnetic wave.
Salandrino, Alessandro +4 more
core +1 more source
A CMOS‐compatible, all‐dielectric Silicon‐on‐Glass reflective metasurface enables low–loss terahertz wavefront control for future 6G wireless communication. Mie‐resonant silicon pillars provide full phase coverage near 500 GHz, achieving experimentally validated single‐, dual‐, and five‐beam steering with sub‐1.5° angular error and less than 3 dB ...
Rithwik Premanand +6 more
wiley +1 more source
Study on measurement of Poynting vector distributions of radio waves [PDF]
電子機器等から放射される高周波(GHz帯)電磁波のポインティングベクトル(エネルギーの流れ)の空間分布を計測する手法を開発した。メタサーフェス構造を利用することで、電磁界ベクトルの2次元分布計測センサを考案し、ポインティングベクトル分布計測・可視化システムを構築した。また電磁波ノイズ源周辺におけるポインティングベクトルの振る舞いを詳細に解析し、波源から放射された電磁界エネルギーがどのように伝搬し、センサに結合して計測されるかを調べた。A novel measurement technique was ...
八木谷, 聡 +3 more
core +1 more source
Unraveling the Thermal Response From Individual Multipole Resonances in Magnetodielectric Spheres
A semi‐analytical framework resolves electromagnetic heating into individual multipolar contributions and an inter‐order coupling correction, linking internal modal fields to local dissipation, temperature evolution, and heat flux. Applied to dual‐symmetric magnetodielectric spheres, it reveals balanced polarization and magnetization losses and ...
Jhon James Hernández‐Sarria +3 more
wiley +1 more source
Topology‐Inverted Mapping: From Optical‐Energy Flow to Inverse‐Faraday Magnetization
A previously unexplored topology‐inverted mapping from optical energy flow to inverse‐Faraday magnetization is revealed in non‐paraxially focused circularly polarized vortex beams. The normalized magnetization reproduces the optical energy‐flow topology with reversed orientation and opposite topological charge, establishing a framework linking optical ...
Zhilong Zhou +3 more
wiley +1 more source
Lattice Resonances in Periodic Arrays of Time‐Modulated Scatterers
This work explores how periodic time modulation alters the collective optical behavior of periodic arrays of scatterers, shedding light on the critical role of collective effects in time‐varying photonic systems and unveiling new opportunities for amplification, active control, and nonreciprocal functionalities.
María Blanco de Paz +3 more
wiley +1 more source
Experimental test of the compatibility of the definitions of the electromagnetic energy density and the Poynting vector [PDF]
It is shown that the generally accepted definition of the Poynting vector and the energy flux vector defined by means of the energy density of the electromagnetic field (Umov vector) lead to the prediction of the different results touching ...
Chubykalo, Andrew +5 more
core +1 more source
Penetration Effect for Tangential Direction of the Anisotropy Axis in Anisotropic Medium [PDF]
Anisotropic plane-parallel structure (both homogeneous and stratified) with the direction of the anisotropy axis along the interfaces under tangential propagation of the incident wave is considered.
K.A. Vytovtov +2 more
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