Results 91 to 100 of about 2,864,348 (299)

Polarization Reconfigurable Patch Antenna Using Parasitic Elements for Sub–6 GHz Applications

International journal of electrical and computer engineering systems
Polarization reconfigurable antenna using parasitic elements are designed for sub-6 GHz applications. A circular patch antenna is designed along with two semicircular arc - elements attached to the radiator with four diodes. By controlling the ON and OFF
Kanniyappan Vinayagam, Rajesh Natarajan
semanticscholar   +1 more source

Heteroatom‐Engineering Promoted Co9S8 Bi‐functional Electrocatalyst for Hydrazine‐Assisted Hydrogen Production at Industrial Current Density

Advanced Functional Materials, EarlyView.
Fe and P co‐doped Co9S8 nanocorals (Fe, P‐Co9S8) are successfully synthesized by a heteroatom engineering strategy, which exhibit outstanding bifunctional electrocatalytic performance for both the hydrogen evolution reaction (HER) and hydrazine oxidation reaction (HzOR).
Yuying Meng, Chunyan Xiang, Wenbiao Zhang, Dahai Zeng, Bing Du, Bao Zhong, Yue Jiang, Damien Voiry, Qingsheng Gao   +8 more
wiley   +1 more source

Modulating Interfacial Potential Gradients in Metal−Carbon Catalysts via Phase‐Engineering for Lithium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
It is elucidated that phase engineering of cobalt modulates the interfacial potential gradients of cobalt–carbon electrocatalysts, enhancing the intrinsic electrocatalytic performance. Modulating the dominant crystalline phase of cobalt from a hexagonal close‐packed to a face‐centered cubic enriches the electron density of carbon shells, thereby ...
Ji‐Oh Kim, Hengquan Guo, Seonghee Kim, Jae Bin Park, Seongwook Chae, Taekyun Kwon, Seungjo Hong, Byeong Jin Kim, Guadalupe Arturo De la Garza Gonzalez, Minjoon Park, Jae Ho Kim, Oi Lun Li, Seung Geol Lee, Jin Hong Lee   +13 more
wiley   +1 more source

Designing Asymmetric Memristive Behavior in Proton Mixed Conductors for Neuromorphic Applications

Advanced Functional Materials, EarlyView.
Protonic devices that couple ionic and electronic transport are demonstrated as bioinspired neuromorphic elements. The devices exhibit rubber‐like asymmetric memristive behavior with slow voltage‐driven conductance increase and rapid relaxation, enabling simplified read–write operation.
Nada H. A. Besisa, Masaki Tsuji, Yoshihiro Furue, Yifan Geng, Satya P. Pati, Satoshi Hamasuna, Takeaki Yajima   +6 more
wiley   +1 more source

Self-Isolated Surface-Mountable MIMO Antenna for FR1 Band Communications

International Journal of Antennas and Propagation
The proposed surface-mountable self-isolated MIMO antenna covers n78 and n79 5G frequency bands. The presented design has two semicircular slots with engineered geometry to get the desired frequency spectrum.
Arpita Patel, Abdulkarem H. M. Almawgani, Trushit Upadhyaya, Vishal Sorathia, Vipul Dabhi, Seif Shebl   +5 more
doaj   +1 more source

Localized High‐Concentration Electrolyte with Water‐Miscible Diluent Enables Stable Zinc Deposition and Long‐Life Aqueous Zinc Metal Batteries

Advanced Functional Materials, EarlyView.
A diisopropyl ether (DIPE)‐based, localized, high‐concentration electrolyte is developed to stabilize both electrodes in aqueous zinc batteries. By reducing water activity and promoting anion‐rich zinc‐ion solvation, it builds robust interphases at both the cathode and anode, ensuring uniform deposition, suppressed corrosion, and highly reversible ...
Yuxuan Wu, Ziwei Zhao, Yue Fei, Hao Zhang, Ge Li   +4 more
wiley   +1 more source

Fuglede-Kadison determinants of matrix-valued semicircular elements and capacity estimates

We calculate the Fuglede-Kadison determinant of arbitrary matrix-valued semicircular operators in terms of the capacity of the corresponding covariance mapping. We also improve a lower bound by Garg, Gurvits, Oliveira, and Widgerson on this capacity, by making it dimension-independent.
Mai, Tobias, Speicher, Roland
openaire   +2 more sources

Pixelation‐Free, Monolithic Iontronic Pressure Sensors Enabling Large‐Area Simultaneous Pressure and Position Recognition via Machine Learning

Advanced Functional Materials, EarlyView.
A pixelation‐free, monolithic iontronic pressure sensor enables simultaneous pressure and position sensing over large areas. AC‐driven ion release generates spatially varying impedance pathways depending on the pressure. Machine learning algorithms effectively decouple overlapping pressure–position signals from the multichannel outputs, achieving high ...
Juhui Kim, Junseo Lee, Kwang‐Hun Choi, Seongil Im, Jae Hong Kim, Changsoon Choi, Junghwan Byun, Changhwan Shin, Ho Won Jang, Hyunsu Ju, Jung Ah Lim   +10 more
wiley   +1 more source

Growth Rings in the Stem of Thuja orientalis L.

International Journal of Horticultural Science, 2000
During the winter dormancy period of 1998-99, the differentiation process of xylem and the formation of annual and pseudo-annual growth rings was studied in sections of the central stem of Thuja orientalis of different age (1-14 year old), starting from ...
G. Schmidt, Gy. Végvári
doaj   +1 more source

Experiments and a model for pilot dynamics with visual and motion inputs [PDF]

Multimodality pilot model for visual and motion feedbacks derived from simulator ...
Alex, F. R., Peters, R. A., Stapleford, R. L.   +2 more
core   +1 more source