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Materials Sciences and Applications (MSA) is an international journal dedicated to the latest advancements in materials. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of material…
Salwan Kamal Jamil Al-Ani, Abdullah Ibrahim, Subhi Saeed Al-Rawi
In this paper we try to give a reasonable account for the origin of the experimental optical energy gap Eo of a-Si:H deduced from the plot due to Cody ( vs. E). Using a realistic model density of states diagram for a-Si:H and the constant dipole matrix elemen…
Atsushi Kawashima, Takeo Oku, Atsushi Suzuki, Kenji Kikuchi, Shiomi Kikuchi
Polysilane/C 60 -based solar cells were fabricated and investigated. Two-types of devices with bulk heterojunction and heterojunction structures were examined and characterized. Addition of silicon-based polymer to the organic solar cells improved the convers…
Gleidson Cardoso, Romário J. da Silva, Rafael R. G. Maciel, Nara C. de Souza, Josmary R. Silva
Films from congo red (CR) alternated with poly(allylamine hydrochloride), PAH, were prepared by layer-by-layer and alternative spray techniques. In order to investigate the change of roughness induced by laser light irradiation (532 nm), both kinds of films w…
Mergoramadhayenty Mukhtar, Lusitra Munisa, Rosari Saleh
Nanocrystalline Cu-doped ZnO particles were synthesized by the co-precipitation method. The composition, structural, optical and magnetic characterizations were performed by energy dispersive X-Ray spectroscopy, X-Ray diffraction, UV-Visible spectrometer, and…
Zayani Jaafar Othman, Adel Matoussi
In the present work, we investigate the structural and optical properties of Zn x-1 Mg x O composites prepared by the standard sintering method at 1200?C during 24 hours and doped with different percentages of magnesium x between 0% and 40%. For this purpose,…
Suhendro Purbo Prakoso, Rosari Saleh
A series of undoped nanocrystalline ZnO particles were successfully synthesized at various dry temperatures (100?C - 600?C) using coprecipitation method. The samples were characterized using a variety of experimental methods such as x-ray diffraction (XRD), e…
Sanket Deshmukh, Kei-Peng Jen, Sridhar Santhanam
Nanofibers of alpha silicon nitride were grown by a vapor-solid mechanism at 1450?C, through the carbothermal reduction process. Two different precursor silica sources were used: silica nanopowders and silica gel. The effect of processing geometry, particular…
Ali Emamian
In order to study the mechanical and triboloical properties of powder metallurgy (PM) parts under different process parameters, the specimens were used in pack carburizing processes. These specimens made from industrial test pieces were carburized in a powder…
Nurudeen Adekunle Raji, Oluleke Olugbemiga Oluwole
The paper presents the results of investigation on the effect of soaking time on the yield strength, ductility and hardness properties of annealed cold-drawn low carbon steel. The low carbon steel cold-drawn at 40% deformation was annealed at 900 deg Celsius…
Mazouz Hamoudi, Bensaada Said, Mohamed Tewfik Bouziane
The aim of this work is the demonstration of the effect of thermomechanical treatments on the properties of the alloy Al-5.8%Zn-2.7%Mg by thermal analysis techniques and calorimetry, which are methods of test widely used for research purposes and quality cont…
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Materials Sciences and Applications (MSA) is an international journal dedicated to the latest advancements in materials. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of material… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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