Results 71 to 80 of about 803,402 (286)

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

A Reconfigurable Ultra-Wideband (UWB) Antenna with Single Band-Rejection [PDF]

, 2018
In this paper, a reconfigurable ultra-wideband (UWB) antenna with WLAN band-rejection is presented. The proposed antenna operates in the ultra-wideband frequency band from 2.99 – 10.82 GHz with band- rejection of 5.00 – 5.85 GHz.
Ali, M.T.; Antenna Research Group (ARG), Faculty of Electrical Engineering (FKE), Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, 40450, Malaysia., Aris, M.A.; Antenna Research Group (ARG), Faculty of Electrical Engineering (FKE), Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, 40450, Malaysia., Baba, N.H.; Antenna Research Group (ARG), Faculty of Electrical Engineering (FKE), Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, 40450, Malaysia., Miswadi, NF.; Antenna Research Group (ARG), Faculty of Electrical Engineering (FKE), Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, 40450, Malaysia.   +3 more
core  

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

Advanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

Dynamically Actuated Reconfigurable Topographical Surface Enables Active Control of Implant‐Associated Infections

Advanced Functional Materials, EarlyView.
A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash, Jihun Lee, J. Scott VanEpps, Sungmin Nam, Jouha Min   +4 more
wiley   +1 more source

DoA Estimation in EM Lens Assisted Massive Antenna System Using Subsets Based Antenna Selection and High Resolution Algorithms [PDF]

Radioengineering, 2018
In recent times, massive antenna array technology has captured significant attention among wireless communication researchers. This is a field with strong potential to increase rates of data transfer; mitigate interference and serve a large number of ...
S.A. Shaikh, A.M. Tonello
doaj  

TerraSAR-X Antenna Calibration And Monitoring Based on a Precise Antenna Model [PDF]

, 2010
The paper describes the theory behind, the methods and the results of the calibration of the TerraSAR-X antenna ...
Bachmann, Markus, Schwerdt, Marco, Bräutigam, Benjamin   +2 more
core   +1 more source

Tracking Battery Microstructural Degradation Through Directional Thermal Transport Signatures

Advanced Functional Materials, EarlyView.
In lithium‐ion batteries, heat conduction varies between the through‐plane and in‐plane directions because of the cell's layered structure. Therefore, cell degradation influences thermal conductivity in each direction uniquely due to detailed microstructural and compositional changes.
Mohammad Shoghi Tekmedash, Rituparna Mohanty, Jack Leber, David Nageb, Mirella Richard, Sharan Singh, Amin Reihani   +6 more
wiley   +1 more source

Slim Luneburg lens for antenna applications

Optics Express, 2011
Luneburg lens is a marvellous optical lens but is extremely difficult to be applied in any practical antenna system due to its large spherical shape. In this paper, we propose a transformation that reduces the profile of the original Luneburg lens without affecting its unique properties.
Angela, Demetriadou, Yang, Hao
openaire   +2 more sources

A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices [PDF]

, 2012
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 IEEEA reconfigurable wideband and multiband C-Slot patch antenna with dual-patch elements is proposed and studied.
AbuTarboush, HF, Hamed Al-Raweshidy, S. W. Cheung, Cheung, SW, R. Nilavalan, Cheung, S. W., Budimir, D., Hattan F. Abutarboush, Nilavalan, R, Al-Raweshidy, H.S., AbuTarboush, H.F., Peter, Thomas, Al-Raweshidy, H, Cheung, S.W., Peter, T, Nasr, K.M., Djuradj Budimir, Budimir, D, Nasr, Karim M., Karim M. Nasr, Thomas Peter, Nilavalan, R., Abutarboush, Hattan F., Budimir, Djuradj, Al-Raweshidy, Hamed, Nasr, KM, Peter, T.   +26 more
core   +1 more source

Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots

Advanced Functional Materials, EarlyView.
Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz, Ramin Yazdaanpanah, Yongfeng Guo, Pouriya Naziri, Sachin Kulkarni, Martina Mercurio, Maria Cristina Larciprete, Ilaria Fratoddi, Paul Simon, Wan‐Lu Li, Koray Aydin, Umut Aydemir   +11 more
wiley   +1 more source