Results 81 to 90 of about 25,634 (258)

Inverse‐Designed Superchiral Hot Spot in Dielectric Meta‐Cavity Toward Ultra‐Compact Enantioselective Detection

open access: yesAdvanced Optical Materials, EarlyView.
Linearly polarized incident light with normal incidence creates enhanced optical chirality hotspots on the metasurface. Several orders of magnitude optical chirality enhancement offers a promising route toward highly sensitive, compact chiral spectroscopy.
Anastasia Romashkina   +10 more
wiley   +1 more source

High efficiency focusing vortex generation and multichannel multiplexing based on terahertz metasurfaces

open access: yesScientific Reports
Single-function metasurfaces can only perform one task and thus cannot satisfy the demands of many advanced applications. Employing multifunctional and multiplexing metasurfaces considerably increases the integration density of functional devices ...
Wenyu Li   +5 more
doaj   +1 more source

Nonlinear plasmonic metasurfaces

open access: yes, 2019
Nonlinear plasmonic metasurfaces have recently attracted considerable interest, due to their potential for enabling nanoscale nonlinear optics. Here, we review the current progress in this topic while paying special attention to existing challenges.
Huttunen, Mikko   +2 more
core   +1 more source

Metasurfaces: Physics and Applications [PDF]

open access: yes, 2018
Metasurfaces, the two-dimensional analog of metamaterials, have attracted progressively increasing attention in recent years due to their planar configurations and, thus, ease of fabrication, while enabling an unprecedented control over optical fields ...
Sergey I. Bozhevolnyi (Ed.)   +2 more
core   +1 more source

Sub‐Diffraction and Irreversibly Tunable Imaging With Potato Starch Lenses

open access: yesAdvanced Optical Materials, EarlyView.
Native potato starch granules function as sustainable birefringent microlenses that enable polarization‐controlled conventional and vortex lensing via spin‐to‐orbital angular momentum conversion. They provide sub‐diffraction and spiral‐contrast imaging, support vortex‐array generation with controllable topological‐charge sign, exhibit irreversible ...
Petr Bouchal   +5 more
wiley   +1 more source

Colloidal Nanocrystal Metasurfaces [PDF]

open access: yes, 2017
Metasurfaces are ultrathin, quasi-two-dimensional materials that are engineered to control and manipulate the flow of light, producing properties unattainable with naturally occurring materials.
Rozin, Matthew J.
core   +1 more source

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

open access: yesAdvanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio   +10 more
wiley   +1 more source

Theory and applications of coherently-illuminated metasurfaces

open access: yes, 2023
Just as natural materials are composed of atoms and molecules, metamaterials are meticulously crafted by arranging specifically engineered sub-wavelength particles, known as meta-atoms, into a three-dimensional structure.
Cuesta, Francisco S.
core   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

open access: yesAdvanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik   +7 more
wiley   +1 more source

Progress on intelligent metasurfaces for signal relay, transmitter, and processor

open access: yesLight: Science & Applications
Pursuing higher data rate with limited spectral resources is a longstanding topic that has triggered the fast growth of modern wireless communication techniques.
Chao Qian, Longwei Tian, Hongsheng Chen
doaj   +1 more source

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