A review of recent progress on directional metasurfaces: concept, design, and application

Abstract

Metasurfaces have provided a new paradigm to control electromagnetic waves by manipulating the spatially varying distribution of subwavelength artificial structures across the interface. Directional metasurfaces, a kind of metasurface with direction-dependent properties, possess different wave functionalities upon the incidence wave coming from opposite directions. The diversified wave-manipulation capabilities of directional metasurfaces show advantages of compactness, flatness, scalability, direction dependence, etc., exhibiting promising potentials for a plethora of applications. Here, we present a review on the recent progress on directional metasurfaces, including the concept origin, the practical realization of meta-structures, the design method for direction-dependent wavefront tailoring, and the application aspects of directional metasurfaces. In the conclusion, we present possible further research directions in this field based on our own perspectives.

Modeling study of the effects of entrainment-mixing on fog simulation in the chemistry–weather coupling model GRAPES_Meso5.1/CUACE CW

“…The GRAPES_Meso5.1/CUACE atmospheric chemical coupling model was established by online integration of the updated version GRAPES_Meso5.1 with the CUACE atmospheric chemical module. 57,58 The GRAPES_Meso model, developed by Chen and Shen, 59 includes a fully compressible nonhydrostatic model core and a physical parameterization package. 60 The dynamic framework is used to simulate large-scale horizontal and vertical transport, as well as diffusion processes for all gases and aerosols.…”

A Comparison between 2D and 3D Rescaling Masks of Initial Condition Perturbation in a 3-km Storm-Scale Ensemble Prediction System

“…The base model used in the experiment is a regional version of the GRAPES model called GRAPES_Meso. The GRAPES is developed at the Earth System Modeling and Prediction Center (former Numerical Weather Prediction Center) of China Meteorological Administration (CMA, Chen et al 2008;Chen and Shen 2006). The main features of the GRAPES include a full compressible dynamical core with nonhydrostatic approximation, a semi-implicit and semi-Lagrangian scheme for time integration, and a height-based terrain following coordinate.…”

All-dielectric metasurfaces for intensity-controllable beam splitting and polarization conversion

“…Recently, the * Author to whom any correspondence should be addressed. emergence of metasurfaces composed of subwavelength metaatoms arranged in a two-dimensional manner has attracted great interest [7,8]. These planar optical devices can flexibly manipulate the polarization, phase, and intensity of electromagnetic waves.…”