Results 111 to 120 of about 153,389 (275)

Secure Energy Efficiency Maximization for IRS-Assisted UAV Communication: Joint Beamforming Design and Trajectory Optimization

Drones
This paper addresses secure transmission in a high-occlusion urban environment, where an intelligent reflecting surface (IRS)-assisted unmanned aerial vehicle (UAV) communication system serves a legitimate user while countering an eavesdropper.
Jiazheng Lv, Jianhua Cheng, Peng Li
doaj   +1 more source

Channel estimation for hybrid intelligent reflecting surface structure assisted mmWave communications

Tongxin xuebao, 2021
When adding intelligent reflecting surface (IRS) for assist communication in millimeter wave communication, the system becomes complicated and difficult to obtain channel state information (CSI).To solve these challenges, a hybrid intelligent reflecting ...
Youhua FU, Dong CHEN
doaj  

Enhancing wireless sensing via a target-mounted intelligent reflecting surface. [PDF]

Natl Sci Rev, 2023
Shao X, Zhang R.
europepmc   +1 more source

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

On the Secure Performance of Intelligent Reflecting Surface-Assisted HARQ Systems. [PDF]

Entropy (Basel), 2023
Wu Y, Mu K, Duan K, Yin S, Yang H.
europepmc   +1 more source

Toward Stable Multivalent Metal Batteries: Understanding the Interfacial Chemistry for Magnesium and Calcium Metal Anodes

Advanced Functional Materials, EarlyView.
Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin, Qi Meng, Juncai Long, Chuheng Cao, Zheng‐Long Xu   +4 more
wiley   +1 more source

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

Advanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Discrete Phase Shifts of Intelligent Reflecting Surface Systems Considering Network Overhead. [PDF]

Entropy (Basel), 2022
Kim J, Yu H, Kang X, Joung J.
europepmc   +1 more source

Dual‐Programmable Architected Magnetic Soft Materials: Tuning Mechano–Electric Responses by Inverse Design

Advanced Functional Materials, EarlyView.
ABSTRACT Materials that can deform, sense, and autonomously generate power in response to wireless magnetic fields, through both magnetic‐actuated shape transformation and charge generation, are an emerging focus in advanced functional materials research.
Zhi Zhao, Xiaojia Shelly Zhang
wiley   +1 more source

Energy-Efficient Resource Optimization for IRS-Assisted VLC-Enabled Offshore Communication System

Journal of Marine Science and Engineering
In this paper, a downlink energy efficiency maximization problem is investigated in an intelligent reflective surface (IRS)-assisted visible light communication system.
Woping Xu, Li Gu
doaj   +1 more source