Results 81 to 90 of about 202,400 (253)

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Toward Reliable Metal Halide Perovskite FETs: From Electronic Structure and Device Physics to Stability and Performance Engineering

Advanced Electronic Materials, EarlyView.
Metal halide perovskite field‐effect transistors (PeFETs) offer great promise for flexible, low‐cost, and high‐performance due to their excellent charge carrier properties. However, challenges like ion migration, hysteresis, and instability limit their performance.
Georgios Chatzigiannakis, Anastasia Soultati, Leonidas C. Palilis, Ermioni Polydorou, Konstantinos Davazoglou, Petros‐Panagis Filippatos, Goutham Raj Perumallapelli, Ravindra Naik Bukke, Abd. Rashid bin Mohd Yusoff, Ilhwan Ryu, Peng Gao, Alexander Chroneos, Mohammad Khaja Nazeeruddin, Maria Vasilopoulou   +13 more
wiley   +1 more source

Forecasting Investment Needs in South Africa's Electricity and Telecom Sectors [PDF]

The paper uses a 52-country panel-data for the period 1980-2002 to estimate demand for electricity and telecom services and, based on these estimates, project investment needs in South Africa through 2010 for two growth scenarios.
Johannes Fedderke, Željko Bogetic
core   +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

Public Expenditure Accounatability in the Telecom Sector [PDF]

The telecom sector has seen much change during the past two decades. At first, it was the opening up of the equipment manufacturing sector, followed by the corporatisation of the government owned entities, Videsh Sanchar Nigam Limited (VSNL) and ...
Jain, Rekha, Raghuram, G., Venkataraman Krishnan   +2 more
core  

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

Leveraging Wind Energy for Electricity and Hydrogen Production: A Sustainable Solution to Power Shortages and Eco‐Friendly Alternative Fuel

Advanced Energy and Sustainability Research, EarlyView.
The article attracts researchers, policymakers, and industry leaders in renewable energy, hydrogen, and sustainable development, as it addresses the critical need for clean, efficient energy solutions. By evaluating the technical, environmental, and economic feasibility of integrating wind energy with hydrogen production. The findings offer significant
Mohamed Elnaggar, Wael A. Salah, Hala J. El‐Khozondar, Yasser F. Nassar, Mohammed J. K. Bashir   +4 more
wiley   +1 more source

Privatization Experiences in France [PDF]

France lived through a long period of nationalization until the early 1980s, when nearly all the largest industrials firms as well as all the banks and public services were state-owned.
Gérard Pogorel, Michel Berne
core  

Accelerated Screening of Halide Double Perovskites via Hybrid Density Functional Theory and Machine Learning for Thermoelectric Energy Conversion

Advanced Energy and Sustainability Research, EarlyView.
This study integrates hybrid density functional theory, Boltzmann transport theory, and machine learning to accelerate the discovery of lead‐free halide double perovskites for thermoelectric energy conversion. By screening 102 compounds, the authors identify high‐performing candidates such as Rb2GeI6 and Cs2SnBr6, offering a sustainable pathway toward ...
Souraya Goumri‐Said, Ghouti Abdellaoui, Mohammed Benali Kanoun   +2 more
wiley   +1 more source

Reducing Interface Energy Loss of Perovskite Solar Cells by Molecular Engineering of Hole‐Transporting Materials

Angewandte Chemie, EarlyView.
This study reports a new hole‐transporting material (WD03) designed via molecular engineering to regulate defect passivation and energy‐level alignment in perovskite solar cells (PSCs). The propeller‐shaped structure ensures balanced charge transport and film quality. Consequently, WD03‐based devices deliver a high open‐circuit voltage of 1.194 V under
Guang Shao, Shang‐Gen Yang, Jian Chen, Dian Wang, Jun‐Jie Zhang, Zu‐Kun Zhou, Jing Xiao, Long Jiang, Zhi‐Zheng Wu, Hiroyuki Kanda, Hua Yang, Zeliang Qiu, Ruiyuan Hu, Xingao Li, Ammar Ahmed Khan, Yi Zhang, Jianxing Xia, Mohammad Khaja Nazeeruddin   +17 more
wiley   +2 more sources