Results 61 to 70 of about 2,385,918 (340)

Artificial Modulation of the Hydrogen Evolution Reaction Kinetics via Control of Grain Boundaries Density in Mo2C Through Laser Processing

Advanced Functional Materials, EarlyView.
A laser‐driven strategy enables precise microstructural modulation of Mo₂C, achieving nanoscale grain control (15.6 ± 5 nm) and an ultrahigh grain boundary density (130 µm−1). Moreover, high‐angle grain boundaries enhance active sites, facilitate electron transport, and optimize hydrogen adsorption kinetics, significantly reducing overpotential.
Seok‐Ki Hyeong, Byung‐Joon Moon, Aram Lee, Min Ji Im, Hee Yun Yang, Ji‐Hee Choi, Seung‐Il Kim, Ji‐Yun Moon, Seoungwoong Park, Sung Kyu Jang, Tae‐Wook Kim, Jae‐Hyun Lee, Sukang Bae, Seoung‐Ki Lee   +13 more
wiley   +1 more source

Energy and environmental aspects of mobile communication systems [PDF]

Energy, Volume 36, Issue 2, February 2011, Pages 1109-1114, 2011
The reduction of the energy consumptions of a Telecommunication Power System represents one of the critical factors of the telecommunication technologies, both to allow a sizeable saving of economic resources and to realize "sustainable" development actions. The consumption of about one hundred base stations for mobile phones were monitored for a total
arxiv   +1 more source

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

On the Capacity of the Binary-Symmetric Parallel-Relay Network [PDF]

Transactions on Emerging Telecommunications Technologies, Volume 25, Issue 2, pages 217-230, February 2014, 2012
We investigate the binary-symmetric parallel-relay network where there is one source, one destination, and multiple relays in parallel. We show that forwarding relays, where the relays merely transmit their received signals, achieve the capacity in two ways: with coded transmission at the source and a finite number of relays, or uncoded transmission at
arxiv   +1 more source

A Wireless Cortical Surface Implant for Diagnosing and Alleviating Parkinson's Disease Symptoms in Freely Moving Animals

Advanced Healthcare Materials, EarlyView.
A wireless cortical surface implant employing graphene electrode arrays diagnoses and alleviates Parkinson's disease symptoms in freely moving animals. The device continuously monitors cortical activity and delivers targeted stimulation, restoring beta–gamma and delta oscillations.
Hongseong Shin, Kyungtae Kim, Jaeseung Lee, Johyeon Nam, Eunha Baeg, Chaeyeon You, Hanseul Choi, Minji Kim, Chun Kee Chung, Jae Geun Kim, Jong Hyun Ahn, Miryung Han, Jibum Kim, Sungchil Yang, Sung Q Lee, Sunggu Yang   +15 more
wiley   +1 more source

Deep Compressive Single Pixel Imaging by Reordering Hadamard Basis: A Comparative Study

IEEE Access, 2020
Single pixel imaging (SPI) combined with compressed sensing techniques can provide solutions for special optical imaging to avoid array detectors and raster scanning.
Xiao Yu, Fan Yang, Bing Gao, Jia Ran, Xin Huang   +4 more
doaj   +1 more source

The Deepest Blue: Major Advances and Challenges in Deep Blue Emitting Quasi‐2D and Nanocrystalline Perovskite LEDs

Advanced Materials, EarlyView.
In this review, the recent development of deep‐blue (≤465 nm) perovskite light‐emitting diodes (PeLEDs) are summarized, using different perovskite nanomaterials, including nanocrystals (NCs), quantum dots (QDs), nanoplatelets (NPLs), quasi‐2D thin film, 3D bulk thin film, as well as lead‐free perovskite nanomaterials.
Pui Kei Ko, Jianchao Ge, Pengbo Ding, Dezhang Chen, Hoi Lam Tammy Tsang, Nitish Kumar, Jonathan E. Halpert   +6 more
wiley   +1 more source

Research on the Thermal-Electric Coupling Behavior Under Compound AC-DC Voltage Within Saddle-Like Electric-Stress Dependence

IEEE Access, 2020
This paper proposes a nonlinear electromagnetic-thermal-velocity coupling model to study the insulation performance of converter transformer, in which the saddle-like electric-stress dependence is considered under compound alternating current-direct ...
Duan Pan, Gao Bing, Chi Cheng, Yang Fan, Luo Ping   +4 more
doaj   +1 more source

Tribenzyl Organic Cations Carried Multidentate X‐Type Lewis Soft Base for High‐Performance Foldable Perovskite Light‐Emitting Diodes

Advanced Materials, EarlyView.
This study proposes tribenzyl organic cation carried multidentate X‐type Lewis soft base to enhance adhesion and passivate defects simultaneously, aiming to achieve foldable and efficient perovskite nanocrystal‐based light‐emitting diodes. The resulting pure red F‐PeLEDs exhibit a recorded high EQE of 16.2% and robust mechanical properties to endure ...
Benzheng Lyu, Dongyu Li, Chengxuan Ke, Haoquan Liang, Jiayun Sun, Qi Xiong, John Jinwook Kim, Yanning Zhang, Guangfu Luo, Wallace C. H. Choy   +9 more
wiley   +1 more source

Optimized Data Transmission and Signal Processing for Telepresence Suits in Multiverse Interactions

Journal of Sensor and Actuator Networks
With the rapid development of the metaverse, designing effective interfaces in virtual and augmented environments presents significant challenges. Additionally, keeping real-time sensory data flowing from users to their virtual avatars in a seamless and ...
Artem Volkov, Ammar Muthanna, Alexander Paramonov, Andrey Koucheryavy, Ibrahim A. Elgendy   +4 more
doaj   +1 more source