نتایج جستجو برای: ribbon carbon doping
تعداد نتایج: 309099 فیلتر نتایج به سال:
Rights: © 1999 American Physical Society (APS). This is the accepted version of the following article: Kaukonen, M. & Nieminen, Risto M. & Pöykkö, S. & Seitsonen, Ari P. 1999. Nitrogen Doping of Amorphous Carbon Surfaces. Physical Review Letters. Volume 83, Issue 25. 5346-5349. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.83.5346, which has been published in final form at http://journals....
Nitrogenated and hydrogenated amorphous carbon (a-C:H:N) films have been deposited by a plasma beam source using a gas mixture of C2H2 , Ar and N2 . The Ar/C2H2 ratio is kept constant at a ratio of 3, with the nitrogen flow allowed to vary. Nonnitrogenated films, with Ar/C2H2 ratios of 3 and 6 were also deposited and analyzed before attempting to identify the modifications to the microstructura...
We have studied the high-field properties of carbon-doped MgB2 thin films prepared by hybrid physical–chemical vapor deposition (HPCVD). Carbon doping was accomplished by adding carbon-containing gas, such as bis(methylcyclopentadienyl)magnesium and trimethylboron, into the hydrogen carrier gas during the deposition. In both cases, Tc drops slowly and residual resistivity increases considerably...
Low levels of cobalt doping (1 wt%) of copper manganese oxide enhances its activity for carbon monoxide oxidation under ambient conditions and the doped catalyst can display higher activity than current commercial catalysts.
The cover image illustrates the effect of doping chemistry on catalytic activity carbon materials. Carbon materials can be modified with different dopants to tune their physicochemical properties for many applications, including hydrogen evolution reaction (HER), oxygen (OER), and reduction (ORR). For this reason, carbon-based are promising electro/photocatalysts. More information found in Revi...
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