Metasurfaces have shown their great capability to manipulate electromagnetic waves. As a
new concept, reconfigurable metasurfaces attract researchers' attention. There are many …

In the last two decades, metamaterials and metasurfaces have introduced many new
electromagnetic (EM) theory concepts and inspired contemporary design methodologies for …

The reconfigurable intelligent surface (RIS) with low hardware cost and energy consumption
has been recognized as a potential technique for future 6G communications to enhance …

We present wave-based signal differentiation with unprecedented fidelity and flexibility by
purposefully perturbing overmoded random scattering systems such that zeros of their …

This paper investigates the uplink cascaded channel estimation for intelligent-reflecting-
surface (IRS)-assisted multi-user multiple-input-single-output systems. We focus on a sub-6 …

Programmable radio environments parametrized by reconfigurable intelligent surfaces
(RISs) are emerging as a new wireless communications paradigm, but currently used …

Near-perfect light absorbers (NPLAs), with absorbance, A, of at least 99%, have a wide
range of applications ranging from energy and sensing devices to stealth technologies and …

We demonstrate experimentally that reflectionless scattering modes (RSMs), a generalized
version of coherent perfect absorption, can be functionalized to perform reflectionless …

The development of metamaterial absorbers has become attractive for various fields of
application, such as sensing, detectors, wireless communication, antenna design, emitters …

Non-Hermitian wave engineering has attracted a surge of interest in photonics in recent
years. Prominent non-Hermitian phenomena include coherent perfect absorption and its …