Results 141 to 150 of about 285,524 (264)
Frozen Differential Scattering in Reconfigurable Complex Media
Laser &Photonics Reviews, EarlyView.A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley +1 more source
Dipole‐Quadrupole Model and Multipole Analysis of Resonant Membrane Metasurfaces
Laser &Photonics Reviews, EarlyView.Membrane metasurfaces, arrays of holes in a dielectric membrane, are appealing because they require no substrate and allow access to resonant near‐fields. However, developing a comprehensive theoretical description for them remains challenging. We introduce a semi‐analytical dipole‐quadrupole approach to analyze their resonant spectra at arbitrary ...
Izzatjon Allayarov +2 more
wiley +1 more source
Two-State Vector Formalism and Emergent Gravity: A Framework for Right-Handed Neutrino Dark Matter
This research paper explores a novel approach to emergent gravity through the lens of the Two-State Vector Formalism (TSVF), providing new insights into the nature of spacetime and its connection to dark matter. Specifically, we investigate how TSVF-based quantum retrocausality can give rise to an effective gravitational framework, leading to a natural
openaire +1 more source
Laser &Photonics Reviews, EarlyView.Neural networks can accelerate modeling and inverse design of electromagnetic devices by several orders of magnitude, but usually require large amounts of data to train. This work demonstrates that integrating knowledge about quasinormal modes into the network architecture reduces the required amount of training data significantly, while simultaneously
Viktor A. Lilja +3 more
wiley +1 more source
Rigorous Electromagnetic Quasinormal‐Mode Method Made Easy for Users
Laser &Photonics Reviews, EarlyView.We present a method that combines numerical techniques with accurate approximations to enable simple and ultrafast computations of the scattered field based on quasinormal modes expansions. The method is made available in the open‐source package MANlite implemented within COMSOL.
Tong Wu, Philippe Lalanne
wiley +1 more source
Lattice Resonances in Periodic Arrays of Time‐Modulated Scatterers
Laser &Photonics Reviews, EarlyView.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
Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces
Laser &Photonics Reviews, EarlyView.Gold nanoparticles placed above a deformed honeycomb plasmonic crystal couple to a chiral topological interface mode. The pseudospin‐split bands ψ+/ ψ− encode spin‐momentum locking, so emitters radiate directionally along the domain wall and share a common phase.
Fatemeh Davoodi
wiley +1 more source
Materials Genome Engineering Advances, EarlyView.Cu/diamond heat spreaders are limited by low thermal boundary conductance. Using DFT + DMM, we identify the phonon‐transport factors governing TBC and show that optical–phonon contributions and branch conversion are essential. High‐k $k$ carbides (B4C, WC) and residual B and Cr improve interfacial heat transfer, enabling robust performance versus ...
Qinghe Zheng +3 more
wiley +1 more source
Nonlocal active sound control for composite regions
Mathematical Methods in the Applied Sciences, EarlyView.In the active sound control problem, additional sound sources, known as control sources, are implemented at the perimeter of a protected domain. The control sources can generate secondary sound inside the shielded domain, which attenuates incoming noise. This leads to an inverse source problem.
Nan Hu, Sergey Utyuzhnikov
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Fully‐Constrained Variable Projection for Water‐Fat Models
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Variable projection (VARPRO) is an effective technique to reduce the dimensionality of least squares optimization problems through the elimination of linear parameters. For water‐fat models, constrained VARPRO variants have been proposed in the literature to ensure that water and fat components are aligned at TE = 0, thereby preventing
Carl Ganter +4 more
wiley +1 more source