Results 81 to 90 of about 18,204 (186)

Active Switching of Orbital Angular Momentum of Light Using Metasurfaces Incorporating Vanadium Dioxide

open access: yesNanophotonics, Volume 15, Issue 5, 16 March 2026.
This work presents a novel design strategy for active metasurfaces that actively switches OAM modes. The metasurface integrates VO2 within MIM meta‐atoms. Operating at 1500 nm, the designed platform enables large leaps in topological charge. For instance, the reflected beam can be switched from a topological charge of −1 in the insulating (M1) phase to
Qinghong Lyu   +4 more
wiley   +1 more source

Existence of Generalized Maxwell–Einstein Metrics on Completions of Certain Line Bundles

open access: yesMathematics
In Kähler geometry, Calabi extremal metrics serves as a class of more available special metrics than Kähler metrics with constant scalar curvatures, as a generalization of Kähler Einstein metrics. In recent years, Maxwell–Einstein metrics (or conformally
Jing Chen, Daniel Guan
doaj   +1 more source

Complex Laplacians on almost-Hermitian manifolds [PDF]

open access: yesJournal of Differential Geometry, 1971
Hsiung, Chuan Chih, Levko, III, John J.
openaire   +2 more sources

Hermitian pluriharmonic maps between almost Hermitian manifolds

open access: yesJournal of Geometry and Physics
In the case where both the domain and target manifolds are almost Hermitian, we introduce the concept of Hermitian pluriharmonic maps. We prove that any holomorphic or anti-holomorphic map between almost Hermitian manifolds is Hermitian pluriharmonic. We also establish some monotonicity formulae for the partial energies of Hermitian pluriharmonic maps ...
openaire   +2 more sources

Almost Hermitian symmetric manifolds II differential invariants

open access: yesDuke Mathematical Journal, 1991
The author continues the study initiated in part I [ibid. 81-112 (1991; see the review above)] and uses here the local twistor connection uniquely associated to an almost Hermitian structure and Lie algebra cohomology in order to construct linear differential invariants of almost Hermitian symmetric structures.
openaire   +3 more sources

On Almost Norden Statistical Manifolds. [PDF]

open access: yesEntropy (Basel), 2022
Samereh L, Peyghan E, Mihai I.
europepmc   +1 more source

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