Results 11 to 20 of about 4,860 (243)

Singular Electromagnetics: From Phase Singularities to Optical Skyrmions and Beyond [PDF]

open access: yesAdvanced Physics Research
AbstractSingular electromagnetics, also known as singular optics in the visible spectrum, is a branch of modern electromagnetics/optics that studies the solutions with nontrivial topological features to Maxwell's equations under different boundary conditions. These nontrivial topological features are called optical singularities, which can be viewed as
Yang, Jie   +3 more
openaire   +4 more sources

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

open access: yes, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

Singular optics and topological photonics [PDF]

open access: yes, 2016
For centuries, singularities in wave fields have been a mainstay of interest in multiple areas of physics, ranging from plasma physics, fluid dynamics and atmospheric physics to optics and photonics [1].
Dennis, Mark R   +5 more
core   +1 more source

The study of singular plasmonic metasurfaces with Transformation Optics [PDF]

open access: yes, 2020
The singular plasmonic metasurfaces differ from the conventional metasurface, as they are featured with singular points, like sharp corners or small gaps.
Yang, Fan
core   +1 more source

Correction of static and non-common path aberrations in an adaptive optics system using inherent calibration data

open access: yes, 2021
For low-order adaptive optics systems, a method that is able to correct for system aberrations in the final focal plane is presented. The paper presents a novel figure of merit, corresponding to the integrated non-normalized tip-tilt-free optical ...
OWNER-PETERSEN, METTE   +7 more
core   +1 more source

Polarization singularities in paraxial vector fields: morphology and statistics

open access: yes, 2002
Polarization patterns in the transverse plane generically contain singularities: points of circular polarization (C points), lines of linear polarization (L lines), instantaneous zeros (disclinations) and component zeros.
Dennis, MR   +3 more
core   +1 more source

Changing image of correlation optics: introduction [PDF]

open access: yes, 2016
This feature issue of Applied Optics contains a series of selected papers reflecting recent progress of correlation optics and illustrating current trends in vector singular optics, internal energy flows at light fields, optical science of materials, and
Angelsky, Oleg V.   +7 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

The connection of singular and nondiffracting optics

open access: yes, 2004
In recent years, singular and nondiffracting optics have been established as independent fast developing fields of modem optics. The purpose of the paper is to show that their connection can result in new prospective effects and experimental methods ...
Courtial, J., Bouchal, Z.
core   +1 more source

Second-harmonic generation from singular metasurfaces

open access: yes, 2022
We present a theoretical study of second-harmonic generation from a singular metasurface. The singular metasurfaces strongly interact with the incident light, where the large field enhancement forms an intense surface polarization that generates the ...
Fan Yang (1413)   +1 more
core   +2 more sources

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