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   Articles with "phase singularity" as a keyword



Ge2 Sb2 Te5 -Based Tunable Perfect Absorber Cavity with Phase Singularity at Visible Frequencies.

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recommendations! Published in 2018 at "Advanced materials"

DOI: 10.1002/adma.201706696

Abstract: The metal-dielectric stacks-based asymmetric Fabry-Perot (F-P) cavity systems have recently attracted much interest from the scientific community for realizing perfect absorption over the spectral bands from visible to infrared since they possess a lithography-free design… read more here.

Keywords: absorption; phase; perfect absorption; phase singularity ... See more keywords

Skyrmionic Polarization Texture around the Phase Singularity of Optical Vortices.

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recommendations! Published in 2025 at "Physical review letters"

DOI: 10.1103/ndy2-wxwx

Abstract: We disclose the existence of a type of optical skyrmion, Gauss-Stokes (GS) skyrmions, that is naturally present in an optical vortex around its phase singularity. Contrary to previous research with optical skyrmions, we neither shape… read more here.

Keywords: skyrmionic polarization; singularity; polarization texture; polarization ... See more keywords

The influence of shot noise on the performance of phase singularity-based refractometric sensors

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recommendations! Published in 2025 at "Nanophotonics"

DOI: 10.1515/nanoph-2025-0101

Abstract: Abstract Topological singularities of optical response functions – such as reflection amplitudes – enable elegant practical applications ranging from analog signal processing to novel molecular sensing approaches. A phase singularity-based refractometric sensor monitors the rapidly… read more here.

Keywords: shot noise; singularity based; phase singularity; singularity ... See more keywords

Highly Sensitive Plasmonic Biosensors with Precise Phase Singularity Coupling on the Metastructures

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recommendations! Published in 2022 at "Biosensors"

DOI: 10.3390/bios12100866

Abstract: In this paper, we demonstrated the ability of a plasmonic metasensor to detect ultra-low refractive index changes (in the order of ∆n = 10−10 RIU), using an innovative phase-change material, vanadium dioxide (VO2), as the… read more here.

Keywords: phase singularity; phase; highly sensitive; plasmonic biosensors ... See more keywords