Results 41 to 50 of about 3,282 (176)

A Three‐Phase Electrostatic Clutch with Variable Mechanical Impedance Control for Soft Robotic Systems

Advanced Science, EarlyView.
The research introduces a three‐phase electrostatic (ES) clutch with variable mechanical impedance control, specifically designed to enable continuous and precise friction modulation, thereby reducing both force degradation and oscillatory motion. This method effectively resolves conventional ES clutch issues, such as residual charge accumulation and ...
Dongyoung Lee, Heejin Yu, Joonbum Bae
wiley   +1 more source

Wavelength Tunable Pulsed Lasers Enabled by a Versatile Metafiber Functioning as Both Saturable Absorber and Filter

Advanced Science, EarlyView.
Schematic diagram of wavelength‐tunable pulsed laser based on metafiber‐FP (Fabry‐Perot). The alcohol solution is filled inside the FP cavity to simultaneously form a spectral filter and a saturable absorber. By adjusting the refractive index value and temperature inside the cavity, the tunable filtering effect is introduced to realize wavelength ...
Bo Fu, Chenxi Zhang, Zhouqi Zhang, Zuxi Ouyang, Gang Wang, Xiuhan Jing, Weilin Chen, Lei Zhang, Min Qiu   +8 more
wiley   +1 more source

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

International Journal of Satellite Communications and Networking, EarlyView., 2023
In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak, Daniel Gaetano Riviello, Alessandro Guidotti, Alessandro Vanelli‐Coralli   +3 more
wiley   +1 more source

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

Fortifying the Backbone: Shielding HAPS Backhaul From Intelligent Jamming

IEEE Open Journal of the Communications Society
High altitude platform stations (HAPS) as International Mobile Telecommunications (IMT) base stations (BSs) or HIBS have emerged as a key enabler to extend wireless connectivity to remote areas, emergency services coordination, and backhaul support ...
Xhelja Kodheli, Amira Bendaimi, Muhammad Sohaib J. Solaija, Gunes Karabulut Kurt, Huseyin Arslan   +4 more
doaj   +1 more source

Flexible Gold Electrodes with Enhanced Adhesion and Electrochemical Performance via Silane‐Modified PDMS for Bioelectronics

Advanced Electronic Materials, EarlyView.
A surface modification technique allows for the direct deposition of gold onto polydimethylsiloxane without using metallic adhesion layers. Through plasma activation and silane chemistry, the resulting electrodes demonstrate excellent adhesion, low resistance, and high electrochemical performance in wet conditions.
Natalia Zalewska, Matthias Nawrocki, Joanna Wysocka, Mohammad Taghi Tourchi Moghadam, Karolina Cysewska   +4 more
wiley   +1 more source

Aqueous Zinc‐Based Batteries: Active Materials, Device Design, and Future Perspectives

Advanced Energy Materials, EarlyView.
This review conducts a comprehensive analysis of aqueous zinc‐based batteries (AZBs) based on their intrinsic mechanisms, including redox reactions, ion intercalation reactions, alloying reactions, electrochemical double‐layer reactions, and mixed mechanisms, systematically discussing recent advancements in each type of AZBs.
Yan Ran, Fang Dong, Shuhui Sun, Yong Lei
wiley   +1 more source

A model for ensuring the continuity of the safe functioning of the product quality traceability system in conditions of unstable communication

Научно-технический вестник информационных технологий, механики и оптики
Evidence-based technologies for product quality have a positive impact on a wide range of social and economic processes. One of the immanent problems of implementing such technologies is determined by the contradiction between the need to ensure open ...
V. H. Le, I. I. Komarov, A. A. Privalov, A. A. Pyrkin   +3 more
doaj   +1 more source

Atomic Layer Deposition‐Modified Bifunctional Electrocatalysts for Rechargeable Zinc‐Air Batteries: Boosting Activity and Cycle Life

Advanced Energy Materials, EarlyView.
The transition metal oxide is precisely deposited on the catalyst surface via atomic layer deposition (ALD), forming a protective layer with catalytic activity. Electrochemical experiments, theoretical calculations, and in situ X‐ray absorption spectroscopy (XAS) battery testing collectively demonstrate that the modified transition metal oxide ...
Fang Dong, Zhangsen Chen, Ning Chen, Gaixia Zhang, Shuhui Sun   +4 more
wiley   +1 more source

Advancing Circularity in Battery Systems for Renewable Energy: Technologies, Barriers, and Future Directions

Advanced Energy and Sustainability Research, EarlyView.
This article examines strategies to enhance the sustainability of battery systems in renewable energy through circular economy principles. It discusses recycling techniques, modular battery design, second‐life utilization, and regulatory frameworks. Key barriers include inadequate infrastructure and regulatory gaps.
Williams Chibueze Munonye, George Oche Ajonye, Samuel Olusegun Ahonsi, Daniella Ifunanya Munonye, Ikechukwu Oscar Chigozie, Obey Akinmorin Akinloye   +5 more
wiley   +1 more source