Results 31 to 40 of about 560,130 (293)

Racemic dielectric metasurfaces for arbitrary terahertz polarization rotation and wavefront manipulation

open access: yesOpto-Electronic Advances
Dielectric chiral metasurface is a new type of planar and efficient chiral optical device that shows strong circular dichroism or optical activity, which has important application potential in optical sensing and display. However, the two types of chiral
Jie Li   +16 more
doaj   +2 more sources

Resonant 2D Wavefront Manipulation via Birefringent Guided‐Mode Resonances in Dielectric Phase Gradient Metasurfaces [PDF]

open access: bronzeLaser & Photonics Reviews
Phase gradient metasurfaces based on guided‐mode resonances have emerged as a promising route to manipulate optical wavefronts with high resolutions in both spatial and spectral dimensions.
Yang-Chung Liao   +4 more
openalex   +2 more sources

Multi-height metasurface for wavefront manipulation fabricated by direct laser writing lithography. [PDF]

open access: yesNanophotonics, 2023
We introduce two types of dielectric metasurfaces, consisting of 3 × 3 regions, which manipulate wavefront by different feature heights. Both polarization-dependent and polarization-independent metasurfaces are realized for phase depth of 0 ∼ 2π at 1550 ...
Ye F   +7 more
europepmc   +2 more sources

Broadband Waterborne Multiphase Pentamode Metastructure with Simultaneous Wavefront Manipulation and Energy Absorption Capabilities. [PDF]

open access: yesMaterials (Basel), 2023
Acoustic metastructures are artificial structures which can manipulate the wavefront in sub-wavelength dimensions, and previously proposed acoustic metastructures have been mostly realized with single materials.
An Y, Zou H, Zhao A.
europepmc   +2 more sources

Reconfigurable and Phase‐Engineered Acoustic Metasurfaces for Broadband Wavefront Manipulation

open access: yesAdvanced Physics Research, 2023
A novel type of phase‐engineered acoustic metasurfaces with reconfigurable properties is reported, enabling the flexible broadband manipulation of reflected wavefronts.
Kexin Zeng   +3 more
doaj   +2 more sources

Programmable Terahertz Wavefront Manipulation with Graphene-Based Reflective Coding Metasurfaces

open access: greenPhysica Scripta
Dynamic wavefront control has drawn considerable attention in the terahertz (THz) region due to its flexible and tunable spatial shaping. However, existing metasurfaces are difficult to implement dynamic wavefront shaping after fabrication, severely ...
Xunjun He   +4 more
openalex   +2 more sources

Programming balanced optical beam splitters in white paint [PDF]

open access: yes, 2014
Wavefront shaping allows for ultimate control of light propagation in multiple-scattering media by adaptive manipulation of incident waves. We shine two separate wavefront-shaped beams on a layer of dry white paint to create two enhanced output speckle ...
Goorden, S.A.   +5 more
core   +8 more sources

Wavefront reconfigurable metasurface through graphene micro-ribbons with resonant strategy

open access: yesResults in Physics, 2023
The majority of metasurfaces are static in their optical properties due to the principles of their construction. For the effect of wavefront reconfigurable, graphene provides the opportunity for adjustability via gate biasing.
Kai He   +6 more
doaj   +1 more source

Complex Wavefront Shaping through a Multi-Core Fiber

open access: yesApplied Sciences, 2021
Wavefront shaping through a multi-core fiber (MCF) is turning into an attractive method for endoscopic imaging and optical cell-manipulation on a chip.
Jiawei Sun   +2 more
doaj   +1 more source

Light-controllable metasurface for microwave wavefront manipulation

open access: yesOptics Express, 2020
Applying multiple physical fields to artificial manipulate electromagnetic waves is a highly stirring research. In this paper, we creatively combine light control with microwave scattering, realizing an optically coding metasurface for beam deflection based on anomalous reflection.
Lei Chen   +5 more
openaire   +2 more sources

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