Results 41 to 50 of about 48,204 (247)

First direct observation of a nearly ideal graphene band structure [PDF]

, 2009
Angle-resolved photoemission and X-ray diffraction experiments show that multilayer epitaxial graphene grown on the SiC(000-1) surface is a new form of carbon that is composed of effectively isolated graphene sheets.
Berger, Claire, Bertran, François, Chiang, S., Conrad, Edward H., De Heer, Walt A., Enriquez, H., Hicks, J., Hu, Yike, Lanzara, A., Le Fèvre, Patrick, Siegel, David, Soukiassian, Patrick, Sprinkle, Mike, Taleb-Ibrahimi, Amina, Tejeda, Antonio, Vizzini, S.   +15 more
core   +6 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Research on Integrated Standardization of the UHV GIL Technology

Zhongguo dianli, 2019
In order to improve the coordination and systematization of technical standards for the UHV GIL, the integrated standardization theory has been applied in UHV GIL technology field.
Jie HE, Boyuan CUI, Hao WANG, Pengfei ZHANG, Zhibing LI, Shuang CHEN, Yun TENG   +6 more
doaj   +1 more source

Is There a Negative Thermal Expansion in Supported Metal Nanoparticles? An In-Situ X-ray Absorption Study Coupled with Neural Network Analysis

, 2019
Interactions with their support, adsorbates and unique structural motifs are responsible for the many intriguing properties and potential applications of supported metal nanoparticles (NPs).
Ahmadi, M., Roldan Cuenya, B., Timoshenko, J.   +2 more
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Research on Reactive Power Compensation Device in UHV AC Substation Connected Directly to 500 kV Busbar

Zhongguo dianli, 2019
Site selection is often difficult for the 1 000 kV UHV AC substation due to its many-grouped reactive power on the low-voltage side of main transformer and the large space occupation.
Lan GUAN, Fei LIU, Weibing WEN, Peng KANG, Junhui HU, Juan ZHAO   +5 more
doaj   +1 more source

Corona Loss Prediction of UHV AC Transmission Line Based on DBN Neural Network Optimized by PSO

Zhongguo dianli, 2022
Based on the correlation between corona loss of UHV AC transmission lines and weather conditions such as rainfall, specific humidity, temperature, relative humidity, pressure, etc., a corona loss prediction method for UHV AC transmission lines is ...
Shumin HUANG, Lingao JIANG, Zhichuan LI, Guangxu YANG, Fugen SONG   +4 more
doaj   +1 more source

Can Distribution Grids Significantly Contribute to Transmission Grids' Voltage Management?

, 2016
Power generation in Germany is currently transitioning from a system based on large, central, thermal power plants to one that heavily relies on small, decentral, mostly renewable power generators.
Auer, Sabine, Chunsen, Wang, Sollacher, Rudolf, Steinke, Florian, Szabo, Andrei   +4 more
core   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Simulation Experiment on Discharge of Plastic Film Overlapping on UHVDC Transmission Lines

Zhongguo dianli, 2022
In order to study the discharge phenomena of plastic film overlapping on UHV DC transmission lines and explore the cause of flashover fault of a ± 800 kV UHV line, an experimental study is conducted on the flashover characteristics of plastic film with ...
Shenghui WANG, Ximing WANG, Xinghao DONG, Jun ZHOU   +3 more
doaj   +1 more source