Results 71 to 80 of about 48,204 (247)

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

Structure-dependent electrical properties of graphene nanoribbon devices with graphene electrodes

, 2019
Graphene nanoribbons (GNRs) are a novel and intriguing class of materials in the field of nanoelectronics, since their properties, solely defined by their width and edge type, are controllable with high precision directly from synthesis.
Barin, Gabriela Borin, Candini, Andrea, Chen, Zongping, Coletti, Camilla, Fantuzzi, Paolo, Fasel, Roman, Feng, Xinliang, Martini, Leonardo, Mishra, Neeraj, Müllen, Klaus, Narita, Akimitsu, Ruffieux, Pascal   +11 more
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 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

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

One-dimensional Si chains embedded in Pt(111)and protected by a hexagonal boron-nitride monolayer

, 2018
Using scanning tunneling microscopy, we show that Si deposition on Pt(111) at 300K leads to a network of one-dimensional Si chains. On the bare Pt(111) surface, the chains, embedded into the Pt surface, are orientated along the -direction. They disappear
Atodiresei, Nicolae, Caciuc, Vasile, Morgenstern, Markus, Nemes-Incze, Peter, Pratzer, Marco, Rose, Silke   +5 more
core   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Empowering effect of ultra-high voltage transmission on urban green development [PDF]

Ziyuan Kexue
[Objective] The ultra-high voltage (UHV) “new infrastructure development” optimizes the power structure and rational allocation of power resources in China, and injects sustainable impetus into the green transformation of the economy. This study aimed to
GONG Jia, WU Zhenlei
doaj   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

UHV papers

, 2019
The research reported here was financed from the EMPIR programme 15NRM02 UHV, which is co-funded by the European Union´s Horizon 2020 research and innovation programme and the EMPIR participating states within EURAMET.
openaire   +1 more source