Results 21 to 30 of about 356 (177)

Vertex-angle Talbot carpet enables self-imaging, mode multiplication, and transformation in skew-periodic structures

open access: yesCommunications Physics
The Talbot effect has been extensively investigated in one-dimensional and orthogonal two-dimensional periodic structures; however, its manifestation in skew-periodic lattices remains unexplored.
Saifollah Rasouli, Pouria Amiri
doaj   +1 more source

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

open access: yesLaser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi   +5 more
wiley   +1 more source

Extending dark optical trapping geometries

open access: yes, 2012
New counter propagating geometries are presented for localizing ultracold atoms in the dark regions created by the interference of Laguerre-Gaussian laser beams.
Arnold, Aidan, Aidan S. Arnold
core   +1 more source

Metasurface‐Based Polarization‐Controlled Generation of 128‐Dimensional Vector Vortex Combs

open access: yesLaser &Photonics Reviews, EarlyView.
The generation and continuous control of 128‐dimensional vector vortex combs using a single metasurface is reported. This work creates a class of structured light that uniquely integrates ultrahigh dimensionality with vector properties, and represents a crucial step toward on‐chip, reconfigurable generators for ultrahigh‐dimensional vector structured ...
Jiaqi Wang, Wenxi Wang, Wen Chen
wiley   +1 more source

Computational study of permeability in cardboard coating layers

open access: yesAIChE Journal, Volume 72, Issue 7, July 2026.
Abstract We develop a virtual material structure model based on a combination of tessellations and Gaussian random fields for a coating layer of paperboard used for packaging and designed to facilitate printing on the surface. To fit the model to tomographic image data acquired using combined focused ion beam and scanning electron microscopy (FIB‐SEM),
Sandra Barman   +6 more
wiley   +1 more source

Laguerre–Hermite pseudo-spectral velocity formulation of gyrokinetics

open access: yes, 2018
First-principles simulations of tokamak turbulence have proven to be of great value in recent decades. We develop a pseudo-spectral velocity formulation of the turbulence equations that smoothly interpolates between the highly efficient but lower ...
N. R. Mandell, W. Dorland, M. Landreman
core   +1 more source

Evolution and Conceptual Insights into the Geometric Phase of Light: A Comprehensive Review

open access: yesAdvanced Photonics Research, Volume 7, Issue 6, June 2026.
This review presents a unified account of the geometric phase of light, linking its fundamental principles to diverse manifestations in polarization, spatial, and vector modes. By connecting theoretical frameworks with key experimental realizations, it reveals a coherent physical picture that deepens understanding and stimulates new directions in ...
A. Srinivasa Rao
wiley   +1 more source

Möbius and Laguerre geometry of Dupin Hypersurfaces

open access: yes, 2015
45 pages.
Li, Tongzhu, Qing, Jie, Wang, Changping
openaire   +3 more sources

A variational problem for surfaces in Laguerre geometry [PDF]

open access: yesTransactions of the American Mathematical Society, 1996
We consider the variational problem defined by the functional ∫
MUSSO, EMILIO, NICOLODI L.
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

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