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   Articles with "phase gradient" as a keyword



Aluminum Plasmonic Metasurface Enabling a Wavelength-Insensitive Phase Gradient for Linearly Polarized Visible Light

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recommendations! Published in 2017 at "ACS Photonics"

DOI: 10.1021/acsphotonics.6b00783

Abstract: For conventional phase-gradient metasurfaces, the phase tuning is mostly fulfilled by the exploitation of a nanoantenna- or a Pancharatnam–Berry-phase-based nanoresonator. The former scheme typically suffers from a dispersive phase gradient, while the latter is dispersionless… read more here.

Keywords: plasmonic metasurface; phase; wavelength insensitive; phase gradient ... See more keywords

Phase gradient ultra open metamaterials for broadband acoustic silencing

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recommendations! Published in 2025 at "Scientific Reports"

DOI: 10.1038/s41598-025-04885-6

Abstract: Noise pollution is a persistent environmental concern with severe implications for human health and resources. Acoustic metamaterials offer the potential for thin silencing devices; however, existing designs often lack practical openness and are thereby limited… read more here.

Keywords: silencing; gradient ultra; ultra open; phase gradient ... See more keywords

Isospectrally patterned lattices

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recommendations! Published in 2024 at "Scientific Reports"

DOI: 10.1038/s41598-025-13336-1

Abstract: We introduce and explore patterned lattices consisting of coupled isospectral cells that vary across the lattice. The isospectrality of the cells is encapsulated in the phase that characterizes each cell and can be designed at… read more here.

Keywords: patterned lattices; isospectrally patterned; phase; phase gradient ... See more keywords

High-efficiency tri-band quasi-continuous phase gradient metamaterials based on spoof surface plasmon polaritons

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recommendations! Published in 2017 at "Scientific Reports"

DOI: 10.1038/srep40727

Abstract: A high-efficiency tri-band quasi-continuous phase gradient metamaterial is designed and demonstrated based on spoof surface plasmon polaritons (SSPPs). High-efficiency polarizaiton conversion transmission is firstly achieved via tailoring phase differece between the transmisive SSPP and the… read more here.

Keywords: high efficiency; phase; tri band; quasi continuous ... See more keywords

Noncanonical perfect vortex beams enabled via nonuniformly varying phase gradient

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recommendations! Published in 2020 at "Journal of Applied Physics"

DOI: 10.1063/1.5142650

Abstract: A method is proposed for generating noncanonical perfect vortex beams (PVBs) based on a theory deduced from the definition of topological charge. Varying the phase gradient of the light field in the region of the… read more here.

Keywords: phase; varying phase; perfect vortex; phase gradient ... See more keywords

Frequency-doubling perfect negative reflection in phase gradient metasurfaces

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recommendations! Published in 2024 at "Applied Physics Letters"

DOI: 10.1063/5.0213650

Abstract: Phase gradient metasurfaces (PGMs) have demonstrated powerful capacities for manipulating light waves freely. However, PGMs have limitations of bulky size and narrow bandwidth that hinder further applications. In this work, we present the design and… read more here.

Keywords: negative reflection; phase gradient; perfect negative; reflection ... See more keywords

Phase-gradient force-based optical array sorter

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recommendations! Published in 2025 at "Applied Physics Letters"

DOI: 10.1063/5.0238242

Abstract: Microparticle sorting is crucial for applications in biomedicine, environmental monitoring, and biochip technology. However, traditional optical sorting methods often rely on external equipment, such as microfluidic devices. In this Letter, we proposed a phase-gradient force-based… read more here.

Keywords: force based; phase gradient; gradient force;
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Phase-Gradient Metasurfaces Based on Local Fabry–Pérot Resonances

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recommendations! Published in 2020 at "Chinese Physics Letters"

DOI: 10.1088/0256-307x/37/9/097801

Abstract: In this work we present a new mechanism for designing phase-gradient metasurfaces (PGMs) to control an electromagnetic wavefront with high efficiency. Specifically, we design a transmission-type PGM formed by a periodic subwavelength metallic slit array… read more here.

Keywords: local fabry; based local; gradient metasurfaces; metasurfaces based ... See more keywords

Perfect Confinement of Acoustic Vortex by Phase-Gradient Metacage

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recommendations! Published in 2025 at "Chinese Physics Letters"

DOI: 10.1088/0256-307x/42/3/034301

Abstract: Acoustic wave isolation and noise reduction are significant challenges in the fields of physics and various applications. Traditional noise-control devices are often hampered by substantial size limitations, and their operational efficacy is generally restricted to… read more here.

Keywords: metacage; confinement acoustic; phase gradient; perfect confinement ... See more keywords

Anomalous light steering by phase gradient metasurface with subwavelength metallic grating

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recommendations! Published in 2019 at "Journal of Physics D: Applied Physics"

DOI: 10.1088/1361-6463/ab2c77

Abstract: Both sub-wavelength periodic structures and phase gradient metasurfaces have opened up new degrees of freedom to steer light in a compact structure, respectively. In this work, a metallic grating with a sub-wavelength period is introduced… read more here.

Keywords: phase gradient; sub wavelength; physics; metallic grating ... See more keywords

Broadband and reconfigurable sound ventilation barriers at low-frequency with phase-gradient metamaterials

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recommendations! Published in 2025 at "Journal of Physics D: Applied Physics"

DOI: 10.1088/1361-6463/adb0d4

Abstract: Acoustic metamaterials that enable sound insulation while maintaining excellent ventilation performance are of great interest. However, their bandwidth is typically very narrow, especially for low-frequency sounds. In this study, we propose a novel ventilated sound-proof… read more here.

Keywords: phase gradient; ventilation; low frequency; physics ... See more keywords