Results 131 to 140 of about 70,205 (364)
Advanced Materials Interfaces, EarlyView.Unique nanopillar metasurfaces are fabricated for the purpose of sensitive detection to refractive index changes in the presence of gold nanoparticles. The addition of these nanoparticles to the surface of the silicon nanopillars is facilitated via a novel antibiotic‐mediated linker system to promote localized surface plasmon effects resulting from Mie
Jacob Waitkus +4 more
wiley +1 more source
Application of metasurfaces in the design of performance-enhanced low-profile antennas
EPJ Applied Metamaterials, 2018 This paper presents a review of metasurface-based antennas conducted at the Microwave Communication Laboratory (MCL) of Ajou University in the Republic of Korea.
Park Ikmo
doaj +1 more source
Gradient metasurfaces: a review of fundamentals and applications [PDF]
, 2017 In the wake of intense research on metamaterials the two-dimensional analogue, known as metasurfaces, has attracted progressively increasing attention in recent years due to the ease of fabrication and smaller insertion losses, while enabling an unprecedented control over spatial distributions of transmitted and reflected optical fields.
arxiv +1 more source
Fabricating Mass‐Producible High‐Performance Metaholograms Using Sol‐Gel‐Processed TiO2
Advanced Materials Interfaces, EarlyView.Mass production of metaholograms on 6‐in. glass is achieved through nanoimprint lithography. TiO₂ sol‐gel is used as an imprint resist, exhibiting a high refractive index in the visible region. Through heat treatment at 600 °C, TiO₂ gel crystallizes into the anatase phase, allowing the fabrication of high‐resolution images with high optical efficiency.
Hyoin Song +6 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Ordered and disordered complex configurations displaying two levels of functionality can be fabricated using a simple self‐assembly method involving the foaming and casting of suspensions containing monodisperse spheres on unpatterned flat substrates.
Luisina Forzani +6 more
wiley +1 more source
IEEE Access, 2018 This paper proposes a switchable metasurface for broadband and polarization-insensitive absorption, whose absorption spectrum can be fluidically switched using liquid metal.
Daecheon Lim, Sungjoon Lim
doaj +1 more source
Reciprocal plasmonic metasurfaces: Theory and applications [PDF]
arXiv, 2020 A new configuration for metasurface construction is presented to achieve multi-functional capabilities including perfect absorption, bio/chem sensing, and surface-mode lasing. The reciprocal plasmonic metasurfaces discussed here are composed of two plasmonic surfaces of reciprocal geometries separated by a dielectric spacer.
arxiv
Mie‐Resonant Metasurfaces with Controlled Silicon Oxidation in Electron‐Beam Deposition
Advanced Materials Interfaces, EarlyView.Electron‐beam deposition is optimized to prevent silicon oxidation by controlling chamber pressure and deposition rate, yielding refractive index values comparable to other methods. This tunability enables precise control of optical properties. Mie‐resonant metasurfaces exhibit strong, tunable collective resonances, allowing the fabrication of silicon ...
Neal Raney, Viktoriia E. Babicheva
wiley +1 more source
Atomic metasurfaces for manipulation of single photons [PDF]
, 2016 Metasurfaces are an emerging platform for manipulating light on a two-dimensional plane. Existing metasurfaces comprise arrays of optical resonators such as plasmonic antennas or high-index nanorods. In this letter, we describe a new approach to realize metasurfaces based on electronic transitions in two-level systems (TLSs).
arxiv +1 more source
Advanced Materials Technologies, EarlyView.This review provides an in‐depth overview of the design principles and optimization strategies for terahertz (THz) metamaterials (MMs) sensors based on the dielectric perturbation theory. Various structures and methods are explored to enhance sensor performance, focusing on improving sensitivity and Q‐factor.
Lei Cao +9 more
wiley +1 more source