Results 121 to 130 of about 1,276,832 (305)

An investigation of minerals using microwave measurement of complex permittivity [PDF]

, 1990
Includes bibliography.Microwave measurement techniques have found many industrial and commercial applications. This measurement potential of microwaves, together with observations that different minerals show different microwave heating characteristics ...
Pendock, Graeme
core   +1 more source

MOF-derived graphitized porous carbon/Fe–Fe3C nanocomposites with broadband and enhanced microwave absorption performance

, 2019
Design of dual-loss electromagnetic (EM) materials composed of carbon-based materials and magnetic particles have been a rational strategy for application in the EM wave absorption field.
Duan, Huajun, Wu, Qilei, Wang, Jun, Yan, Tingyu, Huo, Siqi   +4 more
core   +1 more source

Covalently Integrated Selenoviologen–N‐Heterocyclic Carbene–Pt Nanoparticles for Visible‐Light‐Driven Hydrogen Evolution

Advanced Science, EarlyView.
A covalently integrated single‐component photocatalyst is constructed by anchoring selenoviologen to platinum nanoparticles via robust N‐heterocyclic carbene ligands. The resulting Pt─C covalent bonds function dually as protective structural scaffolds and direct channels for ultrafast intramolecular electron transfer This precise interfacial ...
Wenxi He, Guoping Li, Chenjing Liu, Yu Liu, Yawen Li, Wenxin Wei, Hairui Lei, Ni Yan, Gang He   +8 more
wiley   +1 more source

High toughness and strong microwave absorption of layered Si3N4–SiC/BN ceramics loaded with different SiC contents

Journal of Advanced Ceramics
Layered ceramics can simultaneously achieve high toughness and strong microwave absorption. In this work, layered Si3N4–SiC/boron nitride (BN) ceramics were prepared by tape casting and hot pressing, and the effect of microsized SiC content on their ...
Erlin Zhao, Yi Jia, Quan Li, Jianhao Zhang, Wenzhi Hao, Yang Wang, Jian Yang   +6 more
doaj   +1 more source

Intrinsic Phonons as a Dynamic Control Knob for Catalytic Reactivity in 2D Materials

Advanced Science, EarlyView.
Intrinsic phonon excitations are demonstrated to serve as a dynamic control knob for catalytic reactivity in 2D materials. Mode‐selective lattice vibrations reconstruct the electronic structure, lower oxygen evolution reaction barriers, establishing a phonon‐engineering paradigm for dynamically regulating electrocatalysis beyond conventional static ...
Kai Ren, Feifan Wang, Yong‐Wei Zhang, Tianyang Liu, Liangzhi Kou, Yu Jing   +5 more
wiley   +1 more source

Broadband microwave absorption and improved electromagnetic performance of iron oxide–activated carbon hybrid composites in the Ku-band

Next Materials
This study explores the enhancement of microwave absorption properties in iron oxide (IO) composites through the incorporation of bio-waste-derived activated carbon (AC).
Murtala Alhaji Bello, Raba’ah Syahidah Azis, Nurul Asiya Nadhirah Binti Yusmadi, Ismayadi Ismail, Muhammad Kashfi Shabdin, Nurul Huda Osman, Abubakar Yakubu, Yusuf Sani   +7 more
doaj   +1 more source

MTT-S Mexico trip: addressing the RF and microwave community in Mexico

, 2015
This article focuses on a recent IEEE Microwave Theory and Techniques Society (MTT-S) initiative, conceived by the Membership and Geographical Activities Committee (MGA-C) of the Society’s Administrative Committee (AdCom).
Gupta, Madhu S., Pasquet, Daniel, Szendrenyi, Bela, Rayas-Sánchez, José E.   +3 more
core   +1 more source

Differential Tissue‐Coupled Powering for Battery‐Free Injectable Electroceuticals

Advanced Science, EarlyView.
A thread‐like injectable neural stimulator is powered through differential tissue‐coupled powering (DTCP), which harvests RF‐frequency tissue potentials with an elongated receiver while preserving a injectable cross‐section. The system integrates an ASIC, stimulation electrodes, and a portable transmitter, enabling wireless peripheral nerve stimulation,
Han Wu, Sultan Mahmud, Mali Halac, Asif Iftekhar Omi, Domenica Sofia Baez Rodas, Jeremiasz Dados, Chaojun Cheng, Anyu Jiang, Cameron Wallace, Anvi Singh, Erin Patrick, Baibhab Chatterjee, Shriya Srinivasan, Adam Khalifa   +13 more
wiley   +1 more source

Effect of Fiber Type and Length on Strength, Fracture Energy, and Durability Properties of Microwave-Cured Fiber-Reinforced Geopolymer Mortars

Buildings
Microwave curing can be an alternative curing method for geopolymer production. Although many properties of microwave-cured geopolymer composites have been investigated, the effect of microwave curing on the strength and durability properties of fiber ...
Adil Gultekin
doaj   +1 more source

Temporal Decoupling: A New Paradigm of 4D Photo‐Responsive Carbon Dots Films With Modular Regulation of Color and Deformation

Advanced Science, EarlyView.
This work demonstrates a novel energy regulation strategy using the long‐lived S₁ state as a “kinetic capacitor” to achieve temporally decoupled integration of photoinduced deformation and multicolor fluorescence in naphthalimide‐functionalized carbon dots. This dual‐channel programmable shunting of excited‐state energy establishes a dynamic single‐use
Jianye Zhang, Meichen Meng, Zhimeng Ma, Mingbo Yue, Xiaoyu Xu, Chang Liu, Qiang Fu   +6 more
wiley   +1 more source