Results 71 to 80 of about 6,814 (260)

Mechanistic Control of C─H Bond Activation and C─C Coupling in Light‐Driven Methane Conversion to C2+ Products over Multifunctional Photocatalysts

Advanced Functional Materials, EarlyView.
Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu, Yuheng Jiang, Vitaly V. Ordomsky, Bastian Mei, Zhiyong Tang, Andrei Y. Khodakov   +5 more
wiley   +1 more source

Multi-user joint RIS channel estimation based on ADMM

Dianxin kexue
Addressing the challenges of high pilot overhead and computational complexity in traditional channel estimation methods for millimeter-wave communication systems aided by reconfigurable intelligent surfaces (RIS), a novel channel estimation algorithm ...
ZHU Luhu, WANG Anding
doaj  

Polarization‐Dependent Synaptic‐Like Electro‐Optical Response in Ferroelectric Nematic Liquid Crystals

Advanced Functional Materials, EarlyView.
Ferroelectric nematic liquid crystals (FNLCs) offer fast, tunable polarization and low‐voltage operation but suffer from poor polarization retention at zero field. Semiconductor‐modified FNLCs enhance polarization retention and exhibit short‐ and long‐term electro‐optical responses, while also supporting spike‐type signal integrations.
Kutay Sagdic, Weiming Yao, Danqing Liu
wiley   +1 more source

Dynamic single/dual channel filter with smart temperature set based on electromagnetic tunable FBG

Tongxin xuebao, 2007
A cascaded fiber Bragg gratings filter module was proposed,which can act either as a tunable single channel filter with its central wavelength and/or bandwidth being tunable,or as a double channel filter with its central wavelength being tunable.The ...
ZHANG Duo-ying1, LIU Min1, LI Jian-dong2
doaj   +2 more sources

Dopant Distribution in Ga‐Implanted CdO—A Correlative Microscopy and Molecular Dynamics Study

Advanced Functional Materials, EarlyView.
This work demonstrates that ion implantation offset angle could modulate carrier concentration and mobility in cadmium oxide thin films. Combining correlative microscopy workflow and molecular dynamics simulations, this study reveals the control of interfacial cluster density with tailoring implantation angles, and the optimum offset angle that ...
Morvarid Ghorbani, Bhaveshkumar Kamaliya, Maxwell J. Tolchin, Ryan W. Spangler, Youngji Kim, Joshua D. Caldwell, Jon‐Paul Maria, Nabil D. Bassim   +7 more
wiley   +1 more source

A channel estimation method using denoising autoencoder for large-scale asymmetric backscatter systems

ICT Express
A novel channel estimation method based on deep learning algorithm is proposed for large-scale IoT networks. We consider asymmetric backscatter communication system to maintain low-power at sensor nodes.
Chae Yoon Jung, Jae-Mo Kang, Dong In Kim
doaj   +1 more source

Enzyme‐Loaded Fe3+‐Modified Polydopamine Microparticles: Bioreactor Systems for Operating Biocatalytic Cascades, Enantioselective Transformations and Sensor Applications

Advanced Functional Materials, EarlyView.
Enzyme‐loaded Fe3+‐modified polydopamine microparticles (Fe3+‐PD) act as hybrid biocatalytic frameworks demonstrating NADH peroxidase‐mimic catalytic activities, operation of biocatalytic cascades in confined media, and enantioselective oxidation of D/L‐DOPA. ABSTRACT We report on the synthesis of Fe3+‐modified porous polydopamine microparticles acting
Liubing Kong, Sérgio R. S. Veloso, Yichen Han, Jianghe Zhao, Vitaly Gutkin, Ofir Tirosh, Itamar Willner   +6 more
wiley   +1 more source

A 3D Human Neuron‐on‐Chip Platform to Monitor Neuronal Injury Responses

Advanced Healthcare Materials, EarlyView.
This study presents a novel 3D Neuron‐on‐Chip model that can maintain human PSC‐derived excitatory prefrontal cortex neurons in 3D hydrogels and can be used to monitor neuronal injury responses over time. Results show injury‐induced acute neuronal excitotoxicity, declining neuronal connectivity, and the activation of a neurodegenerative, SASP‐like ...
Ruiping Tang, Charles‐Francois Latchoumane, Avi Chopra, Md Marzan Sarkar, Chunki Kim, Nathan Gonsalves, Hsueh‐Fu Wu, John C. Sentmanat, Alan Liu, Isha Mhatre‐Winters, Aditya Mishra, Andrei G. Fedorov, Jay M. Patel, Nadja Zeltner, Steven L. Stice, Jason R. Richardson, Lohitash Karumbaiah   +16 more
wiley   +1 more source

RIS-Enabled Wireless Channel Equalization: Adaptive RIS Equalizer and Deep Reinforcement Learning

IEEE Open Journal of the Communications Society
Reconfigurable Intelligent Surfaces (RISs) offer a promising means of reshaping the wireless propagation environment, yet practical methods for configuring large passive arrays to achieve reliable signal equalization remain limited.
Gal Ben-Itzhak, Ender Ayanoglu
doaj   +1 more source

Real-Time Segmentation Network of Yard Images Based on Improved SwiftNet [PDF]

Jisuanji gongcheng
In a storage yard environment, real-time image semantic segmentation can provide intuitive scene category information. To save the limited hardware resources of edge equipment, such as industrial computers, and provide image semantic category information
CHEN Xiaoyu, SHEN Chen, SHEN Yue, KONG Deming
doaj   +1 more source