Results 51 to 60 of about 390,720 (278)

Nucleation‐Controlled Reconstruction of CuOx for Selective CO2 Electroreduction

Advanced Functional Materials, EarlyView.
The ratio of oxygen vacancies (Ov) and exposed Cu2O (111)/(200) of CuOx precatalyst is modulated by nucleation control of Cu(OH)2 precursor. Low Ov ratio and high ratio of Cu2O (111)/(200) in slow‐nucleated CuOx reconstructs to high‐coordinated oxide‐derived copper (OD‐Cu) during electrochemical CO2 reduction reaction (CO2RR) and exhibits enhanced ...
Ying Ying Ch'ng, Zhipeng Ma, Ming Zhang, Shujie Zhou, Varun Kundi, Priyank Vijaya Kumar, Wenyu Zhong, Yuwei Yang, Jitraporn Vongsvivut, Qinfen Gu, Xiaoxuan Luo, Lixue Jiang, Rahman Daiyan, Zhaojun Han, Rose Amal   +14 more
wiley   +1 more source

Position-Based Transceiver Design for Multiple Satellite to VSAT Downlink

IEEE Open Journal of the Communications Society
We propose a novel approach for downlink transmission from a satellite swarm towards a very small aperture terminal (VSAT). These swarms have the benefit of much higher spatial separation in the transmit antennas than traditional satellites with antenna ...
Maik Roper, Bho Matthiesen, Dirk Wubben, Petar Popovski, Armin Dekorsy   +4 more
doaj   +1 more source

AUTONOMOUS WHEELED ROBOT PLATFORM TESTBED FOR NAVIGATION AND MAPPING USING LOW-COST SENSORS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
This paper presents the concept of an architecture for a wheeled robot system that helps researchers in the field of geomatics to speed up their daily research on kinematic geodesy, indoor navigation and indoor positioning fields.
D. Calero, E. Fernandez, M. E. Parés
doaj   +1 more source

The Multiband over Spatial Division Multiplexing Sliceable Transceiver for Future Optical Networks

Future Internet, 2023
In the last 15 years, global data traffic has been doubling approximately every 2–3 years, and there is a strong indication that this pattern will persist.
Laia Nadal, Mumtaz Ali, Francisco Javier Vílchez, Josep Maria Fàbrega, Michela Svaluto Moreolo   +4 more
doaj   +1 more source

Harmonic Gauss maps [PDF]

Pacific Journal of Mathematics, 1989
A construction is given whereby a Riemannian manifold induces a Riemannian metric on the total space of a large class of fibre bundles over it. Using this metric on the appropriate bundles, necessary and sufficient conditions are given for the Gauss map and the spherical Gauss map to be harmonic.
Jensen, Gary R., Rigoli, Marco
openaire   +3 more sources

Violating the Quantum Focusing Conjecture and Quantum Covariant Entropy Bound in $d\ge 5$ dimensions

, 2017
We study the Quantum Focussing Conjecture (QFC) in curved spacetime. Noting that quantum corrections from integrating out massive fields generally induce a Gauss-Bonnet term, we study Einstein-Hilbert-Gauss-Bonnet gravity and show for $d\ge 5$ spacetime ...
Fu, Zicao, Koeller, Jason, Marolf, Donald   +2 more
core   +1 more source

Artificial Intelligence as the Next Visionary in Liquid Crystal Research

Advanced Functional Materials, EarlyView.
The functions of AI in the research laboratory are becoming increasingly sophisticated, allowing the entire process of hypothesis formulation, material design, synthesis, experimental design, and reiterative testing to be automated. In our work, we conceive how the incorporation of AI in the laboratory environment will transform the role and ...
Mert O. Astam, Ouassim L'Karkouri, Danqing Liu   +2 more
wiley   +1 more source

Echanges thermiques des parois d’un environnement habitable: étude et analyse

Revue des Énergies Renouvelables, 2018
Ce modeste travail porte sur l’étude des différents modes de transferts énergétiques entre l’environnement habitable et l’atmosphère. Il s’agit d’échanges d’énergie et de masse qui s’opèrent entre les deux systèmes et qui impliquent donc leur ...
A. Oudrane, B. Aour, M. Hamouda, S. El Mokretar, M. Benhamou   +4 more
doaj  

NUT-Charged Black Holes in Gauss-Bonnet Gravity

, 2005
We investigate the existence of Taub-NUT/bolt solutions in Gauss-Bonnet gravity and obtain the general form of these solutions in $d$ dimensions. We find that for all non-extremal NUT solutions of Einstein gravity having no curvature singularity at $r=N$,
A. H. Taub, D. Lust, J. Polchinski, M. H. Dehghani, M. B. Greens, R. B. Mann   +5 more
core   +2 more sources

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source