Results 41 to 50 of about 1,160,454 (280)
Spin angular momentum density in the tight focus of a light field with phase and polarization singularities [PDF]
Компьютерная оптика, 2019 For a light field with both phase and polarization singularities at its center, expressions are obtained that describe the distribution of the spin angular momentum (SAM) density in the sharp focal spot of an aplanatic system.
Alexey Kovalev +2 more
doaj +1 more source
Compound Vector Light Generator Based on a Metasurface
Photonics, 2021 In view of wide applications of vector light with a non-uniform polarization state, a compound vector light generator is proposed to generate compound vector light. One compound vector light contains two or more non-uniform polarization modes and several
Changda Zhou +3 more
doaj +1 more source
Topologically protected optical polarization singularities in four-dimensional space
Science Advances, 2023 Optical singularities play a major role in modern optics and are frequently deployed in structured light, super-resolution microscopy, and holography.
semanticscholar +1 more source
Physica Scripta, 2023 We study here the intensity distribution and formation of optical polarization Möbius strips by tightly focusing of C-point singularity beams. These beams are characterized by a central circular polarization point (C-point) surrounded by a spatially ...
S. Pal +4 more
semanticscholar +1 more source
Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells
FEBS Letters, EarlyView.Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López +2 more
wiley +1 more source
Structured Light: Ideas and Concepts
Frontiers in Physics, 2020 The paper briefly presents some essential concepts and features of light fields with strong spatial inhomogeneity of amplitude, phase, polarization, and other parameters.
Oleg V. Angelsky +7 more
doaj +1 more source
A versatile geometric metasurface for generating both focused vortex and vector beams
Results in Physics, 2023 Singular beam has attracted lots of research interests because of its great potential for applications in various fields such as optical communications and super-resolution imaging.
Qiao Jiang +3 more
doaj +1 more source
Nondiffractive three-dimensional polarization features of optical vortex beams
Advanced Photonics Nexus, 2023 . Vector optical vortices exhibit complex polarization patterns due to the interplay between spin and orbital angular momenta. Here we demonstrate, both analytically and with simulations, that certain polarization features of optical vortex beams ...
A. Afanasev +3 more
semanticscholar +1 more source
Polarization singularities of biological tissues images
Journal of Biomedical Optics, 2006 The ways to the polarization singularities of the biological tissues images of various morphological structures have been theoretically analyzed. The coordinate distributions of singly (linear states of polarization) and doubly degenerated (circular states of polarization) polarization singularities of the physiologically normal and pathologically ...
O V, Angelsky +3 more
openaire +2 more sources
Molecular Oncology, EarlyView.A mouse model for vascular normalization and a human breast cancer cohort were studied to understand the relationship between vascular leakage and tumor immune suppression. For this, endothelial and immune cell RNAseq, staining for vascular function, and immune cell profiling were employed.
Liqun He +8 more
wiley +1 more source