Results 131 to 140 of about 141,500 (254)

Investigating Hydrogel Structural Parameters in the Flory–Rehner Model Using Bayesian Optimization

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Hydrogels exhibit tunable solvent absorption driven by environmental stimuli such as temperature, pH, and light. While prior work established connections between synthesis processes and swelling behavior of temperature‐responsive hydrogels, the current study bridges the internal structure and the temperature‐responsive swelling behavior. First,
Yawen Wang   +2 more
wiley   +1 more source

On the Roots of Bessel's Functions [PDF]

open access: yesProceedings of the National Academy of Sciences, 1921
openaire   +2 more sources

Achromatic Petal‐Shaped Beam Generation and Information Encoding Based on Perfect Vortex Beam

open access: yesNanophotonics, Volume 15, Issue 10, 27 May 2026.
Based on petal‐shaped beams with controllable topological charge, size, and rotation angle, this work employs a spatially multiplexed all‐dielectric TiO2 transmissive array to numerically achieve achromatic petal‐shaped beams at three wavelengths: 480 nm, 530 nm, and 630 nm. Leveraging their unique intensity distribution and rotational characteristics,
Yilong Ge   +10 more
wiley   +1 more source

Phase Relations and Melting of SiO2 Under Mantle Conditions Determined From Machine Learning Potentials

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract SiO2 is a fundamental component of planetary interiors, yet its high‐pressure melting and phase relations remain uncertain. We develop a machine learning potential with first‐principles accuracy and perform large‐scale two‐phase coexistence simulations to determine the melting curves of stishovite, post‐stishovite, and seifertite up to 160 GPa
Xin Deng   +5 more
wiley   +1 more source

Electromagnetic Quasinormal Modes: A Foundational Framework for Describing Fano Resonances of Extinction Spectra

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
An ab initio electromagnetic framework links quasinormal modes to Fano resonances in extinction spectra. Analytical expressions for the Fano asymmetry and intensity parameters are derived from overlap integrals, enabling rapid spectral reconstruction and physical interpretation.
Mikhail Bochkarev   +5 more
wiley   +1 more source

Euler‐Top Gaussian Modes: Structured Beams From Quadratic Angular Momentum Dynamics

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
A new family of structured Gaussian light beams are introduced: Euler‐top Gaussian modes. Their ray‐orbital paths on the Gaussian Poincaré sphere correspond to the polhodes of the Euler top in classical angular momentum theory. This geometric and algebraic construction reveals a nonseparable mode family extending the familiar Hermite‐, Laguerre‐ and ...
Mark R. Dennis, Kerr Maxwell
wiley   +1 more source

Polaritonic Spectra of Optical Mie Voids

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
Optical Mie voids have been shown to provide a versatile platform for polaritonic physics. Analytical and numerical analysis reveal how void resonances couple to excitonic media, enabling weak‐ and strong‐coupling regimes, polariton gaps, Q‐factor enhancement, and spatial mode localization.
Evgeny Ryabkov   +3 more
wiley   +1 more source

Interaction of Structured Light With Nanostructured Matter

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
Structured light–matter interactions at the nanoscale remain poorly understood. We reveal a symmetry‐matched mechanism governing orbital‐angular‐momentum‐dependent extinction in gold nanodisk oligomers. Tailored diffractive optical elements generate flower‐like beams whose rotational symmetry dictates absorption. Experiments and a semi‐analytical model
Noah Apostolico   +6 more
wiley   +1 more source

Optical Skyrmions Modulation Based on Polarization Helicity

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
The polarization helicity represents the global twisted property of the polarization state distribution, it can be used to modulate the spin skyrmion texture in the tight focusing of the radially polarized vortex light. By adjusting the polarization helicity of incident field, the Néel‐Bloch‐Néel transition of the spin skyrmion texture can be realized,
Dong Xu   +5 more
wiley   +1 more source

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

open access: yesAdvanced Functional Materials, Volume 36, Issue 38, 11 May 2026.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz   +9 more
wiley   +1 more source

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