Results 121 to 130 of about 332,498 (295)
Applied SciencesThis paper introduces a novel efficient hybrid reconfigurable intelligent surface (RIS) approach designed to significantly reduce power loss and enhance coverage area in 6G networks.
Aya Kh. Ahmed, Hamed S. Al-Raweshidy
doaj +1 more source
Comments on "A Linear Time Algorithm for the Optimal Discrete IRS Beamforming"
, 2023 The problem of optimizing discrete phases in a reconfigurable intelligent surface (RIS) to maximize the received power at a user equipment is addressed. Comments on [1] are provided.
Ayanoglu, Ender, Pekcan, Dogan Kutay
core
Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How it Works, State of Research, and Road Ahead [PDF]
arXiv, 2020 What is a reconfigurable intelligent surface? What is a smart radio environment? What is a metasurface? How do metasurfaces work and how to model them? How to reconcile the mathematical theories of communication and electromagnetism? What are the most suitable uses and applications of reconfigurable intelligent surfaces in wireless networks?
arxiv
Advanced Science, EarlyView.Solution‐processed approach for integration of Fe2O3/WS2 nano‐hybrid composite memristor devices. Remarkable switching characteristics and excellent durability for up to 105 cycles. The device shows ultra‐low energy consumption of 0.072 pJ and excellent environmental stability.
Faisal Ghafoor +11 more
wiley +1 more source
, 2023 Reconfigurable intelligent surface (RIS) is a promising solution to boost coverage sustainably by reflecting waves from a transmitter to a receiver and acting as a low-power and passive relay.
Phan-Huy, Dinh-Thuy +2 more
core
Advanced Science, EarlyView.A reconfigurable microneedle electrode array integrated system is developed for minimally invasive and transdermal monitoring of subcutaneous electromyography, reactive oxygen species, and pH values. By assembling discrete thumbtack‐shaped microneedles into an array, the system enables multi‐parameter detection with single‐microneedle resolution.
Zhengjie Liu +12 more
wiley +1 more source
Phonon Engineering of Micro‐ and Nanophononic Crystals and Acoustic Metamaterials: A Review
Small Science, Volume 3, Issue 1, January 2023., 2023 Phononic crystals and acoustic metamaterials with phonon wave manipulation capabilities have attracted considerable attention. This review summarizes the progress and identifies gaps in phonon engineering at the micro‐ and nanoscales using phononic crystals and metamaterials due to their potential significance in modern electronic applications.
Jihong Ma
wiley +1 more source
A liquid crystal-based multi-bit terahertz reconfigurable intelligent surface
APL PhotonicsRecently, the growing interest in reconfigurable intelligent surface (RIS) technology has spurred extensive research on its utilization in the terahertz (THz) regime.
Ze Shen +3 more
doaj +1 more source
Reconfigurable intelligent surface with high optical-transparency based on metalmesh
Journal of Information and Intelligence, 2023 Reconfigurable intelligent surfaces (RISs) have aroused extensive attentions from academic and wireless communication communities due to their abilities to customize the electromagnetic (EM) characteristics of the propagation channels flexibly and ...
Jing Cheng Liang +3 more
doaj
State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control
Advanced Science, EarlyView.High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu +13 more
wiley +1 more source