Results 71 to 80 of about 17,092 (265)

Thermally Assisted Photocatalytic Dehydrogenation of Methanol in Continuous Steady‐State Operation

Advanced Science, EarlyView.
Thermally assisted photocatalytic methanol dehydrogenation on Pt/TiO2 enables formaldehyde and hydrogen production far beyond thermodynamic limits. Continuous operation delivers up to 95% selectivity over 70 h, and oxygen microdosing strongly boosts conversion by regenerating surface oxygen sites.
Florian Stubenrauch, Phillip Nathrath, Markus Schörner, Yazan Mahayni, Birk Fritsch, Andreas Hutzler, Peter Wasserscheid, Andreas Bösmann, Patrick Schühle   +8 more
wiley   +1 more source

Engineering Large‐Grain Metal Halide Perovskite Films via Chemical Vapor Deposition for High‐Performance, Ultralow‐Noise Perovskite Photodetectors

Advanced Science, EarlyView.
Chemical vapor deposition produces large‐grain, phase‐pure CsPbBr3 films (grains up to 35 µm) with Drude‐like terahertz photoconductivity and twofold higher carrier mobility versus spin‐coated references. These microstructural advances translate into photodetectors with a detectivity of 8.4 × 1012 Jones, dark current below 1 pA cm−2, X‐ray sensitivity ...
Roel Vanden Brande, Sudipta Seth, Lei Gao, Bapi Pradhan, Dilkhush Khicher, Anastasiia Bazylevska, Wei Qu, Christian Sternemann, Hai Wang, Steven De Feyter, Weidong Xu, Fei Zhang, Mischa Bonn, Johan Hofkens, Elke Debroye   +14 more
wiley   +1 more source

Research on the Influence of Transformer Winding on Partial Discharge Waveform Propagation

Energies
Partial Discharge (PD) measurement is one of the effective methods for assessing the internal insulation condition of power transformers in factories and substations. The pulse current signals generated by PD within transformer windings are significantly
Kaining Hou, Zhaoyang Kang, Dongxin He, Fuqiang Ren, Qingquan Li   +4 more
doaj   +1 more source

Probing Type‐II Multiferroicity in Monolayer NiBr2

Advanced Science, EarlyView.
Type‐II multiferroicity is demonstrated in monolayer NiBr2. Scanning tunneling microscopy resolves ferroelectric polarization arising from non‐collinear magnetic order, and reciprocal control with electric and magnetic fields confirms intrinsic magnetoelectric coupling.
Aleš Cahlík, Antti Karjasilta, Anshika Mishra, Robert Drost, Mohammad Amini, Javaria Arshad, Büşra Gamze Arslan, Peter Liljeroth   +7 more
wiley   +1 more source

Fabrication et caractérisation de nano-rubans de graphène par gravure électronique directe [PDF]

, 2012
Le graphène est l'un des candidats les plus prometteurs pour la fabrication des futurs dispositifs électroniques. Ses remarquables propriétés électroniques découlent de sa structure atomique et sont caractérisés par un gaz bidimensionnel d'électrons à l ...
Linas, Sébastien
core  

Nickel Intercalation in Epitaxial Graphene on SiC(0001): A Novel Platform for Engineering Two‐Dimensional Heterostructures

Advanced Science, EarlyView.
Ni‐intercalated graphene on SiC is achieved through a scalable colloidal nanoparticle deposition route. 2D heterostructures show preserved graphene band structure, stable under ambient conditions, and robust interfacial magnetism. Intercalated 2D Ni represents a promising candidate for next‐generation spintronic devices and is a scalable pathway to ...
Ylea Vlamidis, Stiven Forti, Antonio Rossi, Arrigo Calzolari, Carmela Marinelli, Camilla Coletti, Stefan Heun, Stefano Veronesi   +7 more
wiley   +1 more source

Site Density Governs Switching Reactivity Regimes During Aerobic C─H Oxidation in Mn Single‐Atom Photocatalysts

Angewandte Chemie, EarlyView.
Increasing the density of isolated manganese (Mn) atoms in carbon nitride (CNx) photocatalysts does not continuously improve performance. Instead, beyond a critical loading, the polymer support reorganizes, altering charge‐carrier dynamics and oxygen activation while preserving atomic dispersion.
Viktoria Velichko, Agustín de Arriba, Areti Moutsiou, Elisabetta Inico, Andrea Olivati, Berta Pérez‐Román, Jesús López‐Sánchez, Ik Seon Kwon, Andrea Tonelli, Abhijit Roy, Valentina De Renzi, Raul Arenal, Annamaria Petrozza, Carlo Cavallotti, Gianvito Vilé   +14 more
wiley   +2 more sources

A method for detecting two‐dimensional plane stress distribution in basin‐type insulator based on critically refracted longitudinal wave

High Voltage
Basin‐type insulator often has small cracks due to stress concentration. The current method cannot accurately reflect the stress condition of the insulator to find the stress concentration areas.
Zhaoyang Kang, Fuqiang Ren, Hongru Zhang, Jingjing Yang, Kaining Hou, Qingquan Li, Dongxin He, Hongshun Liu, Yongzhi Zhao, Huaxin Wen   +9 more
doaj   +1 more source

Review on accelerated degradation mechanisms of electrical insulation in power electronic equipment under the pulsed electric field

iEnergy
Due to prolonged exposure to pulsed voltage during operation, the insulation systems of power electronic equipment are susceptible to premature degradation and failure, which seriously affect the operation of the power system.
Dongxin He, Xiangze An, Cong Zhang, Qingfa Li, Gilbert Teyssedre, Qingquan Li   +5 more
doaj   +1 more source

Study on the Impact of UHV AC Composite Cross-arms on Live Working Safety

Zhongguo dianli, 2019
The UHV AC composite cross-arm structure, quite different from the conventional towers, has a significant impact on the safety distance of live working, the mode of entering or exiting equipotential, and the electric field protection requirements of ...
Xinglie LEI, Yong PENG, Bin XIAO, Ting LIU, Kai LIU, Zhun ZHANG   +5 more
doaj   +1 more source