Results 91 to 100 of about 17,989 (291)
Plasmonic Spiral Nanostructure for Analyzing the Angular Momentum of Light
IEEE 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
Ground-state phase diagram of a spin-orbital-angular-momentum coupled Bose-Einstein condensate
, 2019 By inducing a Raman transition using a pair of Gaussian and Laguerre-Gaussian laser beams, we realize a Rb87 condensate whose orbital angular momentum (OAM) and its internal spin states are coupled.
Tianyou Gao (14413392) +10 more
core +1 more source
Giant Orbital Rashba–Edelstein Effect in Crystalline Cu2O/Cu Heterostructures
Advanced Materials, EarlyView.An enhanced orbital Rashba–Edelstein effect is demonstrated in a crystalline Cu2O/Cu heterostructure, compared to naturally oxidized CuOx structures, highlighting the critical role of crystallinity and interface control in orbital torque generation. The resulting spin torque conductivity exceeds that of Pt, indicating the potential of orbital torque ...
San Ko +10 more
wiley +1 more source
PhotonicsIn 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
Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment
Advanced Materials, EarlyView.ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud +31 more
wiley +1 more source
, 2003 Spin angular momentum of photons, and the associated polarisation of light, has been known of for many years. However, it is only over the last decade or so that physically realisable laboratory light beams have been used to study the orbital angular ...
Padgett, M.J., Allen, L., Barnett, S.M.
core
Additive Manufacturing of Ni‐Based Thermoelectric Materials for Waste Heat Recovery
Advanced Materials Technologies, EarlyView.Thermoelectric generators convert waste heat into electricity but are constrained by conventional fabrication. Here, laser powder bed fusion enables direct printing of customised n‐type Cu60Ni40 and p‐type Ni90Cr10 legs. The assembled module achieves 0.8% efficiency at ΔT = 419 K, demonstrating scalable additive manufacturing of eco‐friendly, design ...
Karolin Amstein +6 more
wiley +1 more source
Conserved spin operator of Dirac’s theory in spatially flat FLRW space-times
European Physical Journal C: Particles and FieldsNew 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
Spin constrained orbital angular momentum control in high-harmonic generation
, 2018 The interplay between spin and orbital angular momentum in the up-conversion process allows us to control the macroscopic wave front of high harmonics by manipulating the microscopic polarizations of the driving field.
H. Larocque (17492082) +9 more
core +1 more source
Graphene‐Based Wearable Textile Triboelectric Nanogenerators and Biomechanical Sensors
Advanced 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