Results 111 to 120 of about 233 (207)

An improved grid impedance estimator for grid-forming converters in consideration of controller dynamics

International Journal of Electrical Power & Energy Systems, 2023
Jingrong Yu, Wenjing Liu, Jianwen Sun, Fu Zhang, Yuxiang Yang   +4 more
openaire   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source

A Universal van der Waals Tunneling Injector for Monolayer CMOS

Advanced Materials, EarlyView.
A universal van der Waals injector unlocks polarity‐flexible tunneling contacts for monolayer CMOS. SnSe2, an intrinsically degenerate 2D semiconductor, establishes polarity‐specific band alignments with both WSe2 and MoS2 channels, enabling steep switching, high on/off ratios, and a unified route to low‐power 2D logic.
Hanbin Cho, Jing Huang, Seonguk Yang, Subin Im, Sangwoo Park, Jeongin Yeo, Sungyeon Kim, Gilhwan Do, Wenxuan Zhu, Soobeom Shin, Jongwon Lee, Yongjoon Shin, Do‐Sun Lee, Hu Young Jeong, Tae‐Eon Park, Jun Kang, Kyungmin Ko, Joonki Suh   +17 more
wiley   +1 more source

Measuring and Manipulating Density of States in Two‐Dimensional Materials With Electrochemical Capacitance

Advanced Materials Interfaces, EarlyView.
We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan, Mitchell Kaiser, Maria L. Sushko, Xiaobin Liao, Hao Tang, Chun‐Chih Tseng, Matthew Yankowitz, Ying Xia, Jihui Yang, Jun Liu   +9 more
wiley   +1 more source

Estimating the Geomagnetically Induced Currents in the 1,000 kV Power Grid Over North China During the May 2024 Geomagnetic Storm: Accounting for Anisotropic Earth Conductivity

Space Weather
Geomagnetically induced currents (GICs) pose a significant threat to the safe and stable operation of power systems, making accurate risk assessment under extreme geomagnetic storm conditions essential.
Xuejian Zhang, Gilbert Pi, Tianqi Wang, Wenxin Kong, Ye Fan, Zdeněk Němeček, Jana Šafránková, Fagen Pei, Nian Yu   +8 more
doaj   +1 more source

Nonwoven‐Based Textile Architectures for Energy Storage Applications: Materials, Preparation, Characterization, and Prospects

Advanced Materials Interfaces, EarlyView.
Nonwoven textile architectures are emerging as versatile platforms for next‐generation energy storage, demonstrating how tailored materials and fabrication strategies enhance ion transport, conductivity, flexibility, and scalability for high‐performance sustainable devices.
Tarikul Islam, Md. Hanif Munshi, Rijon Saha, Shaikh Almoon Hussain, Aqib Adnan Shafin, Shumsul Arefin, Md. Kamruzzaman   +6 more
wiley   +1 more source

Maskless Fabrication of PLA‐Based Neural Arrays for CNS Recording and Stimulation

Advanced Materials Interfaces, EarlyView.
Biodegradable neural interfaces enable bidirectional communication with the CNS. Through electrochemical characterization, ageing tests with impedance monitoring, and in vivo validation, we assess the performance of PLA‐based epicortical and spinal implants.
Anna De Salvo, Federica Velluto, Ilenia Sergi, Michele Di Lauro, Verónica Barranco‐Maresca, Elena Alonso‐Calviño, Yasmina Hernández‐Martín, Juan Aguilar, Juliana M. Rosa, María C. Serrano, Carolina Giulia Ferroni, Federico Rondelli, Elisa López‐Dolado, Luciano Fadiga, Fabio Biscarini   +14 more
wiley   +1 more source

Grafted Low‐Leakage Si/AlN p‐n Diodes Enabled by Fluorinated AlN Interface

Advanced Materials Interfaces, EarlyView.
This work demonstrates a fluorination‐based interface engineering strategy that transforms oxygen‐terminated AlN surfaces into fluorine‐terminated interfaces for grafted p‐Si/n‐AlN diodes. By combining pseudo‐ALE oxide removal, XeF2 fluorination, and ultrathin SiNx stabilization, the engineered interface suppresses defect‐assisted reverse leakage by ...
Yi Lu, Tsung‐Han Tsai, Qingxiao Wang, Haicheng Cao, Jie Zhou, You Jin Koo, Chenyu Wang, Yang Liu, Yuyue Hao, Michael Eller, Connor Bailey, Stephanie Liu, Nicholas J. Tanen, Zhiyuan Liu, Mingtao Nong, Robert M. Jacobberger, Tien Khee Ng, Katherine Fountaine, Vincent Gambin, Boon S. Ooi, Xiaohang Li, Zhenqiang Ma   +21 more
wiley   +1 more source

Grid impedance estimation with voltage-source converters

As renewable energy sources continue to become interconnected with the grid, Voltage-Source Converters(VSCs)have been used to interface generation units with the grid. But when the grid conditions are weakened that is when there is high and varying impedance, the stability of VSCs gets adversely affected.
openaire   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source