Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Afshan Ashraf"'
1
Effective parameters of a metamaterial composed of dielectric coated conducting cylindrical rods
Autor: Ahsan Ullah, Afshan Ashraf, Z.A. Awan, Hassan Ullah
Publikováno v: International Journal of Microwave and Wireless Technologies. 12:797-808
In the first part, the scattering characteristics of an isolated dielectric coated conducting rod have been investigated. The types of considered coatings for the scattering analysis are realistic materials including barium strontium titanate, magnet
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04b6f99bdfdeaafe6b3a726fb4794d4b
https://doi.org/10.1017/s1759078720000094
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3
Study of Ultra-High-Vacuum Properties of Carbon-Coated Stainless Steel Beam Pipes for High-Energy Particle Accelerators
Autor: Mazhar Mehmood, Sohail Ahmad Janjua, Afshan Ashraf
Publikováno v: Arabian Journal for Science and Engineering. 44:6593-6600
Ultra-high vacuum (UHV) in high-energy particle accelerator is essential to ensure the required beam lifetime. In the present communication, the UHV characterization of vacuum chambers coated with a thin film of carbon is reported. Recently, such coa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d239c21c5caeb31b18ef62c54dc45f6a
https://doi.org/10.1007/s13369-019-03761-6
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4
An information theoretic model for the linear and nonlinear dissipative structures in irradiated single-walled carbon nanotubes
Autor: Sumaira Zeeshan, Afshan Ashraf, Sumera Javeed, Kashif Yaqub, Shoaib Ahmad
Publikováno v: Chemical Physics Letters. 707:144-149
Experiments with irradiated single-walled carbon nanotubes are shown to generate a set of probability distribution functions and to derive a set of information theoretic entropy-based parameters. Energetic Cs+ ions initiate linear collision cascades
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c14d4f9a895c0b3b683d0586d701aefe
https://doi.org/10.1016/j.cplett.2018.07.052
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8
Reflection electron energy loss spectrum of single layer graphene measured on a graphite substrate
Autor: Silvina Tatiana Seguí, Alessandra Bellissimo, Wolfgang S. M. Werner, Afshan Ashraf, Roland Leber
Publikováno v: Surface Science. 635:L1-L3
Reflection electron energy loss spectra (REELS) have been measured on a highly oriented pyrolytic graphite (HOPG) sample. Two spectra were measured for different energies, 1600 eV, being more sensitive to the bulk and 500 eV being more sensitive to t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3de0bdc67afe36c71e741ef20854aa1c
https://doi.org/10.1016/j.susc.2014.12.016
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9
Amorphous carbon films in direct current magnetron sputtering from regenerative sooting discharge
Autor: Sumera Javeed, Sumera Yamin, Sumaira Zeeshan, Muhammad Anwar-ul-Haq, Kashif Yaqub, Sohail Ahmad Janjua, Mazhar Mehmood, Shoaib Ahmad, Afshan Ashraf
Publikováno v: Vacuum. 86:193-200
We present results of carbon coatings on metal substrates in cylindrical hollow cathode (CHC) direct current magnetron sputtering. This is a new technique for making amorphous carbon films by CHC magnetron sputtering from a regenerative sooting disch
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af0ab998922f1ba1232ae63dd6d6e7d5
https://doi.org/10.1016/j.vacuum.2011.06.005
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