Results 71 to 80 of about 9,264 (254)

Plasmonic Spiral Nanostructure for Analyzing the Angular Momentum of Light

open access: yesIEEE Photonics Journal, 2017
A compound plasmonic light analyzer with an elliptical Archimedean spiral nanostructure is proposed analytically and analyzed numerically. The elliptical Archimedean spiral is analogous to an ellipse but has varying semimajor axes.
Haiwen Wang   +3 more
doaj   +1 more source

Why Is the Mechanism Underlying the Chiral‐Induced Selectivity Effect Still Challenging?

open access: yesAdvanced Materials, EarlyView.
The chiral‐induced spin selectivity (CISS) effect is observed in many experimental configurations and for different materials. However, there are theoretical challenges in attempting to explain those results. A qualitative framework for explaining all the results is presented.
Ron Naaman, Yossi Paltiel
wiley   +1 more source

Cyclic Evolution of Synergized Spin and Orbital Angular Momenta

open access: yesAdvanced Science
Spin angular momentum (SAM) and orbital angular momentum (OAM) are fundamental physical characteristics described by polarization and spatial degrees of freedom, respectively.
Lei Liu   +5 more
doaj   +1 more source

High‐Density Topological Defect Array by Two‐Step Interference Photoalignment

open access: yesAdvanced Materials, EarlyView.
High density arrays of topological defects in nematic liquid crystal are realized by two‐step interference photoalignment, with a minimal distance of 1.25 micrometer and disclination lines connecting defects on opposing substrates. Such layers can be used as reconfigurable templates for photonic devices to achieve large angle diffraction, beam shaping ...
Sunqian Liu, Inge Nys, Kristiaan Neyts
wiley   +1 more source

Spin Angular Momentum at the Focus of a Superposition of an Optical Vortex and a Plane Wave with Linear Polarizations

open access: yesPhotonics
In this paper, tight focusing of a superposition of a vortex laser beam with topological charge n with linear polarization and a plane wave with the same linear polarization directed along the horizontal axis is considered.
Victor V. Kotlyar   +3 more
doaj   +1 more source

Graphene‐Based Wearable Textile Triboelectric Nanogenerators and Biomechanical Sensors

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a wearable textile‐based triboelectric nanogenerator (T‐TENG) using sprayed graphene enhanced with a PVA adhesion layer. The graphene‐based electrode demonstrates high electrical conductivity and robustness to multiple bends. The fabricated T‐TENG provides stable and efficient output, with strong responsiveness to biomotion.
Hongyang Dang   +4 more
wiley   +1 more source

The energy-momentum tensor of spin-1 hadrons: formalism

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We provide the complete decomposition of the local gauge-invariant energy-momentum tensor for spin-1 hadrons, including non-conserved terms for the individual parton flavors and antisymmetric contributions originating from intrinsic spin.
Wim Cosyn   +3 more
doaj   +1 more source

Spin angular momentum transfer and plasmogalvanic phenomena

open access: yesPhysical Review B, 2017
15 pages, 2 ...
Durach, Maxim, Noginova, Natalia
openaire   +3 more sources

Solution‐Processed Spin‐Polarized Light‐Emitting Diodes of Colloidal Quantum Wells and Magnetic Nanoparticles

open access: yesAdvanced Optical Materials, EarlyView.
All‐solution‐processed spin‐LEDs based on colloidal Fe3O4 nanoparticles and CdSe/CdZnS core/shell CQWs that allows for polarization modulation of electroluminescence are fabricated. With these devices, electrical injection of spin‐polarized carriers from the Fe3O4 nanoparticle layer into the CdSe/CdZnS CQWs is demonstrated, realizing circularly ...
Savas Delikanli   +14 more
wiley   +1 more source

Conserved spin operator of Dirac’s theory in spatially flat FLRW space-times

open access: yesEuropean Physical Journal C: Particles and Fields
New conserved spin and orbital angular momentum operators of Dirac’s theory on spatially flat FLRW space-times are proposed generalizing thus the recent results concerning the role of Pryce’s spin operator in the flat case (Cotăescu in Eur Phys J C, 82 ...
Ion I. Cotăescu
doaj   +1 more source

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