Güncel Gönderiler: Fakülteler
Toplam kayıt 10075, listelenen: 1161-1180
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Co-doped willemite ceramic pigments: Technological behaviour, crystal structure and optical properties
(Elsevier Sci LTD, 2010)Cobalt-doped willemite is a promising blue ceramic pigment, but some important aspects concerning crystal structure, optical properties and technological behaviour are still undisclosed. In order to get new insight on these ... -
CVD growth of monolayer MoS2: Role of growth zone configuration and precursors ratio
(IOP Publishing LTD, 2017)Single-layer, large-scale two-dimensional material growth is still a challenge for their wide-range usage. Therefore, we carried out a comprehensive study of monolayer MoS2 growth by CVD investigating the influence of ... -
Effect of the milling process on the properties of CoFe2O4 pigment
(Elsevier Sci LTD, 2013)In this study, CoFe2O4 pigments were synthesised using both co-precipitation and conventional ceramic methods. Pigment particles prepared using the conventional ceramic method were subsequently milled to submicron size. ... -
Pyroplastic deformation behavior of vitreous porcelain bodies in presence of spodumene
(Australian Ceramic Society, 2017)Pyroplastic deformation tendency of vitreous body compositions is a major production problem. In this work, a vitreous sanitaryware body composition (ST) which was developed in a previous work was taken as standard, and ... -
Effect of the processing on the production of cordierite-mullite composite
(Elsevier Sci LTD, 2010)In this study, effect of process on the production of cordierite mullite composite was studied. For this reason two different processing methods were used in the production of cordierite mullite composites. In first process, ... -
Production of cordierite ceramic by aqueous tape casting process
(Elsevier Science Sa, 2008)Tape-casting process was used to produce cordierite ceramics in an aqueous system with polyvinylalcohol (PVA), and polyethyleneglicol (PEG), as binder and plasticizer, respectively. Before starting to tape-casting studies, ... -
Effect of Kaolin Type on Pyroplastic Deformation of Sanitaryware Porcelain Body
(Gazi University, Fac Engineering Architecture, 2016)Pyroplastic deformation is one of the major problems of sanitaryware production, because of high temperature firing and high amount of glassy phase and this problem can be reduced by controlling of amount of glassy and ... -
Effect of the Particle Size of Hard Raw Materials on Physical Properties of Sanitaryware Porcalain
(Gazi University, Fac Engineering Architecture, 2011)Sanitaryware porcelain is a kind of a group of glassy porcelains called "vitreous china". The raw materials quartz sand and feldispar used for production of these porcelains are hard materials. It is well known that particle ... -
Near-Unity Efficiency Energy Transfer from Colloidal Semiconductor Quantum Wells of CdSe/CdS Nanoplatelets to a Monolayer of MoS2
(American Chemical Society, 2018)A hybrid structure of the quasi-2D colloidal semiconductor quantum wells assembled with a single layer of 2D transition metal dichalcogenides offers the possibility of highly strong dipole-to-dipole coupling, which may ... -
Catalytic Applications of Large Pore Sulfonic Acid-Functionalized SBA-15 Mesoporous Silica for Esterification
(De Gruyter Poland Sp Zoo, 2018)We report the preparation of pore expanded and sulfonic acid functionalized mesoporous silica catalysts by using different kinds of swelling agents such as 1,3,5-trimethyl benzene (TMB), n-decane (D), n-tridecane (TD), and ... -
Bifunctional Fe-SBA-15-SO3H Mesoporous Catalysts with Different Si/Fe Molar Ratios: Synthesis, Characterization and Catalytic Activity
(Wiley-V C H Verlag GMBH, 2013)Bifunctional Fe-SBA-15-SO3H mesoporous materials with different Si/Fe molar ratios (3, 5, and 7) have been synthesized via a simple direct hydrothermal method and characterized by XRD, N-2-adsorption/desorption, TG/DTG and ... -
Spectroscopic analysis of pigments and inks in manuscripts: II. Islamic illuminated manuscripts (16th-18th century)
(Elsevier Science BV, 2014)Pigments and inks in five Islamic illuminated manuscripts, dated from 16th to 18th century, were investigated by micro-Raman spectroscopy and SEM-EDX analyses. Micro-Raman spectroscopy was employed for characterization of ... -
Spectroscopic analysis of pigments and inks in manuscripts. III. Old-Slavonic manuscripts with multicolored rubication
(Elsevier Science BV, 2015)Raman spectroscopy, FTIR spectroscopy and SEM-EDS were applied in characterization of pigments and inks in five old-Slavonic manuscripts: Kicevo Four Gospel (16th century), Zrze Four Gospel (16th/beginning of 17th century), ... -
Thermal conductivity engineering of bulk and one-dimensional Si-Ge nanoarchitectures
(Taylor & Francis LTD, 2017)Various theoretical and experimental methods are utilized to investigate the thermal conductivity of nanostructured materials; this is a critical parameter to increase performance of thermoelectric devices. Among these ... -
Tailoring thermal conductivity of silicon/germanium nanowires utilizing core-shell architecture
(Amer Inst Physics, 2016)Low-dimensional nanostructured materials show large variations in their thermal transport properties. In this work, we investigate the influence of the core-shell architecture on nanowire (1D) thermal conductivity and ... -
Polarization insensitive single mode Al2O3 rib waveguide design for applications in active and passive optical waveguides
(Springeropen, 2015)Both passive and active, single mode, wavelength and polarization insensitive design of Al2O3 rib waveguides on SiO2 substrate is reported. Influence of the waveguide height, etch depth, waveguide width and operation ... -
Thermal Conductivity Suppression in Nanostructured Silicon and Germanium Nanowires
(Springer, 2016)The inherent low lattice thermal conductivity (TC) of semiconductor nanowires (s-NW) due to one-dimensional phonon confinement might provide a solution for the long-lasting figure-of-merit problem for highly efficient ... -
Magnetic Nano-Sized Solid Acid Catalyst Bearing Sulfonic Acid Groups for Biodiesel Synthesis
(De Gruyter Poland Sp Zoo, 2018)In our approach for magnetic iron oxide nanoparticles surface modification, the fabrication of an inorganic shell, consisting of silica by the deposition of preformed colloids onto the nanoparticle surface and functionalization ... -
CVD grown 2D MoS2 layers: A photoluminescence and fluorescence lifetime imaging study
(Wiley-V C H Verlag GMBH, 2016)In this letter, we report on the fluorescence lifetime imaging and accompanying photoluminescence properties of a chemical vapour deposition (CVD) grown atomically thin material, MoS2. mu-Raman, mu-photoluminescence (PL) ... -
High-surface-area SBA-15-SO3H with enhanced catalytic activity by the addition of poly(ethylene glycol)
(Springer, 2013)The influence of poly(ethylene glycol) (PEG) and synthesis temperature in the synthesis of SBA-15-SO3H was investigated to evaluate the catalytic activity in the esterification of propionic acid with methanol. The catalysts ...
