Results 161 to 170 of about 66,629 (316)

Spectrally Adjustable Narrowband Photonic Device Based on Heat‐Driven Amorphous‐to‐Crystal Transformation of Si

open access: yesAdvanced Photonics Research, EarlyView.
The change in the dielectric function from the heat‐driven amorphous‐to‐crystal Si transformation can be used to engineer large spectral adjustability of Si‐based multilayered narrowband photonic devices operating in the IR region. This effect can be utilized to accurately adjust the resonance wavelength of fabricated amorphous multilayered structures ...
David Hernández Pinilla   +6 more
wiley   +1 more source

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

open access: yesAdvanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida   +3 more
wiley   +1 more source

Multipolar Resonances in Electro‐Optic Metasurfaces with Moderate Refractive Index

open access: yesAdvanced Photonics Research, EarlyView.
Electro‐optic nanoantennas with moderate refractive indices of 2.3 to 3.0 are numerically shown to sustain strong multipolar resonances, enabling efficient light confinement and EO tuning. Multipolar modes of even parity are most sensitive to variations in the refractive index.
Viktoriia E. Babicheva   +1 more
wiley   +1 more source

Reconfigurable Microwave Absorption Properties and Principles of Double-Layer Metasurface Absorbers

open access: yesMolecules
A reconfigurable microwave absorber based on double-layer metasurface is proposed for wide microwave band applications spanning 3 to 14 GHz. The absorber consists of two layers with two-dimensional array of four-semi-circular and square-ring metasurface ...
Yun He   +5 more
doaj   +1 more source

MARISA: A Self-configuring Metasurfaces Absorption and Reflection Solution Towards 6G

open access: green, 2022
Antonio Albanese   +4 more
openalex   +2 more sources

Dynamically Tunable Coherent Perfect Absorption Based on Bound States in the Continuum in Borophene Metamaterials

open access: yesAdvanced Photonics Research, EarlyView.
This article proposes a symmetry‐protected bound states in the continuum mechanism based on borophene metamaterials, achieving dual‐band broadband coherent perfect absorption (CPA) in the near‐infrared spectrum. By dynamically modulating carrier concentration, the operational bandwidth of CPA can be significantly expanded, effectively overcoming the ...
Xue‐Yan Wu   +5 more
wiley   +1 more source

Tunable Multifunctional Terahertz Coding Metasurface for Polarization Manipulation

open access: yesAdvanced Photonics Research, EarlyView.
Coding metasurfaces (CMs) offer versatile control over electromagnetic waves. Herein, a tunable multifunctional terahertz (THz) metasurface integrated with vanadium dioxide (VO2) is presented, enabling propagation‐phase manipulation of linearly polarized waves and hybrid‐phase control of circularly polarized waves.
Chunsheng Zhang   +10 more
wiley   +1 more source

Fault Tolerance in Programmable Metasurfaces: The Beam Steering Case

open access: green, 2019
Hamidreza Taghvaee   +4 more
openalex   +2 more sources

Metasurface‐Encoded Single‐Pixel Hyperspectral Imaging

open access: yesAdvanced Photonics Research, EarlyView.
A metasurface‐enabled single‐pixel hyperspectral imaging approach is proposed, achieving sub‐2‐nanometer spectral discrimination and accurate reconstruction at low sampling ratios. By uniting advanced nanophotonics with data‐driven algorithms, this framework overcomes limitations of conventional single‐pixel imaging and sets a new benchmark for compact
Haitao Nie   +6 more
wiley   +1 more source

An Ultra‐Wideband Metasurface Perfect Absorber Based on Hybrid Absorption Modes

open access: yesAdvanced Photonics Research, EarlyView.
A Ge2Sb2Te5 metasurface absorber enables polarization‐independent, ultrabroadband (UV–NIR) light absorption with high angular tolerance. Its performance stems from overlapping electric and magnetic dipole resonances in a symmetric structure, achieving 94% average absorption and maintaining 83% even at 70° incidence, promising for integrated ...
Dingbang Liu   +8 more
wiley   +1 more source

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