Results 121 to 130 of about 210 (153)

Heights on ‘hybrid orbits’ in Shimura varieties

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.
Abstract We prove the ‘hybrid conjecture’ which is a common generalisation of the André–Oort conjecture and the André–Pink–Zannier conjecture, in the case of Shimura varieties of abelian type.
Rodolphe Richard, Andrei Yafaev
wiley   +1 more source

Roadmap for Photonics with 2D Materials. [PDF]

open access: yesACS Photonics
de Abajo FJG   +147 more
europepmc   +1 more source

Increasing of Q Factor of Quasi‐Bound States in the Continuum With Increased Asymmetry Parameter in a Silicon Metasurface Array

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
Quasi‐bound states in the continuum (qBICs) can support resonances with high quality (Q) factor. Traditionally, maintaining a high Q factor requires a small α, which brings significant challenges for nanofabrication. In contrast, our study finds an increase in the Q factor with increasing of α in a metasurface array composed of Si blocks with circular ...
Yi Tian   +5 more
wiley   +1 more source

Three‐Dimensional Array Multicasting of Cylindrical Vector Beams Using Spin‐Multiplexed Dammann Vortex Metasurface

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
This study demonstrates, for the first time, a 3D volumetric cylindrical vector beam (CVB) multicasting architecture that employs multichannel array modes with an operational dimension of 3 × 3 × 5 as information carriers. This approach offers substantial potential for high‐capacity information dissemination in mode‐multiplexed communication networks ...
Zhiqiang Xie   +8 more
wiley   +1 more source

Thermotropic reentrant isotropic symmetry and induced smectic antiferroelectricity in the ferroelectric nematic material RM734. [PDF]

open access: yesProc Natl Acad Sci U S A
Chen X   +8 more
europepmc   +1 more source

High‐Order Janus Bound States in the Continuum Assisted by Unidirectional Guided Resonances

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
A high‐order Janus bound state in the continuum, featuring a q = −3 vortex in the upward radiation channel and a q = +1 vortex in the downward channel, is realized in truncated‐cone photonic crystal slabs by merging unidirectional guided resonances with a symmetry‐protected BIC, enabling direction‐dependent control of topological light emission ...
Zengping Su   +8 more
wiley   +1 more source

Topological Spin Excitations in Honeycomb Ferromagnet CrI 3 . [PDF]

open access: yesPhys Rev X, 2018
Chen L   +7 more
europepmc   +1 more source

Robust Bound States in the Continuum in Mirror‐Symmetric Terahertz Metasurfaces

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
An ideal BIC, supported by local inversion symmetry in a mirror‐symmetric metasurface, transforms into a QBIC by introducing an asymmetry parameter α. This transition yields a finite Q‐factor following Q ∝ α−1.95, whereas the singular polarization state splits into two distinct circularly polarized points. This framework ensures robust BIC formation at
Die Zou   +9 more
wiley   +1 more source

Generalised Phase Field Modelling of Fracture in Gyroid Structures: Numerical and Experimental Insights Using Additively Manufactured Polylactic Acid (PLA) Specimens

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 13, 15 July 2026.
ABSTRACT This study presents a three‐dimensional cohesive phase field framework for simulating quasi‐static fracture in Gyroid lattice structures. To the authors' knowledge, this is one of the first experimentally validated applications of a diffuse cohesive phase field model to describe damage and fracture evolution in additively manufactured ...
Deison Preve   +4 more
wiley   +1 more source

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