Results 11 to 20 of about 20,833 (309)
Active nonlocal metasurfaces [PDF]
Nanophotonics, 2020 Abstract Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication. Most wavefront‐shaping metasurfaces can be considered “local” in that their operation depends on the responses of individual meta‐units.
Stephanie C. Malek +3 more
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Metasurface Photodetectors [PDF]
Micromachines, 2021 Photodetectors are the essential building blocks of a wide range of optical systems. Typical photodetectors only convert the intensity of light electrical output signals, leaving other electromagnetic parameters, such as the frequencies, phases, and polarization states unresolved.
Jinzhao Li +3 more
openaire +3 more sources
Dynamic Hybrid Metasurfaces [PDF]
Nano Letters, 2021 Efficient hybrid plasmonic-photonic metasurfaces that simultaneously take advantage of the potential of both pure metallic and all-dielectric nanoantennas are identified as an emerging technology in flat optics. Nevertheless, post-fabrication tunable hybrid metasurfaces are still elusive. Here, we present a reconfigurable hybrid metasurface platform by
Sajjad Abdollahramezani +12 more
openaire +4 more sources
Temperature invariant metasurfaces
High Contrast Metastructures XII, 2023 Abstract Thermal effects are well known to influence the electronic and optical properties of materials through several physical mechanisms and are the basis for various optoelectronic devices. The thermo‐optic (TO) effect, the refractive index variation with temperature (d n
Shany Zrihan Cohen +3 more
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Electromagnetic Metasurfaces and Reconfigurable Metasurfaces: A Review [PDF]
Frontiers in Physics, 2021 Metamaterial is a kind of material/structure that is artificially designed and has exceptional electromagnetic properties and/or other physical properties, not found in nature. A class of electromagnetic metamaterial with only one or a few layers of periodic or aperiodic arranged cell structures in the direction of electromagnetic waves propagation can
Sidrish Zahra +9 more
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Neuromorphic metasurface [PDF]
Photonics Research, 2019 Metasurfaces have been used to realize optical functions such as focusing and beam steering. They use subwavelength nanostructures to control the local amplitude and phase of light. Here we show that such control could also enable a new function of artificial neural inference.
Zhicheng Wu +4 more
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Metasurfaces and Optimal transport
The SMAI Journal of computational mathematics, 2022 This paper provides a theoretical and numerical approach to show existence, uniqueness, and the numerical determination of metalenses refracting radiation with energy patterns. The theoretical part uses ideas from optimal transport and for the numerical solution we study and implement a damped Newton algorithm to solve the semi discrete problem.
Cristian E. Gutiérrez +3 more
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Light‐emitting metasurfaces [PDF]
Nanophotonics, 2018 Abstract Photonic metasurfaces, that is, two‐dimensional arrangements of designed plasmonic or dielectric resonant scatterers, have been established as a successful concept for controlling light fields at the nanoscale. While the majority of research so far has concentrated on passive metasurfaces, the direct integration of nanoscale ...
Aleksandr Vaskin +3 more
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, 2019 Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the propagation of electromagnetic waves in desired directions. For example, metasurfaces have been demonstrated to produce unusual scattering properties of incident plane ...
Quevedo-Teruel O. +76 more
core +4 more sources
Conformable Holographic Metasurfaces [PDF]
Scientific Reports, 2017 AbstractMetasurface holograms are typically fabricated on rigid substrates. Here we experimentally demonstrate broadband, flexible, conformable, helicity multiplexed metasurface holograms operating in the visible range, offering increased potential for real life out-of-the-lab applications.
James Burch +3 more
openaire +5 more sources