Materials Literature
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Nanocrystalline Ni0.94Co0.03Mn0.04Cu0.03Fe1.96-xAlxO4(x = 0,0.1,0.3,0.5,0.7and0.9) were synthesized using microwave hydrothermal method at 160°C/40 min. The synthesized powders were characterized using XRD, TEM and FTIR. The nanopowders were sintered using microwave sintering method at 950°C/30 min. The prepared sampl…
Here we report electrospinning of Poly(dimethylsiloxane-b-vinyl pyrrolidone) (PDMS-b-PVP) based fibrous scaffold materials. The morphology, thermal properties, surface composition, hydrophilicity and fibers formation with different PDMS and PVP chain lengths were determined by using scanning electron microscopy (SEM),…
Twin wire submerged arc welding (SAW) is widely used in the joining of oil or gas pipelines because of its high productivity. However, when it is applied to join the high strength steel pipe, the heat affected zone (HAZ), especially the coarse grain zone, becomes very brittle. To investigate the strength and toughness…
In-Ga-Zn oxide (IGZO) TFTs was fabricated by ink-jet printing technology on a silicon substrate with SiO2on top. The device fabrication process includes printing ITO electrodes and IGZO semiconductor layer. A typical printed TFT shows a mobility of 0.32 cm2/V s and a contact resistance of ~1 MΩ. Device performance was…
Indium sulfide films were deposited using the simple and low cost chemical bath deposition. The films were deposited on the glass substrate by using In2(SO4)3 as indium and thioacetamide as sulfur source. The films were characterized using the different techniques with respect to their crystal structure, optical and e…
Physical and gas transport properties of amine-terminated hyperbranched polyimide-silica hybrid (AM-HBPI-silica hybrid) membranes prepared with a dianhydride, 4,4’-(hexafluoroisopropylidene)diphthalic anhydride, and a triamine, 1,3,5- tris(4-amino-phenoxy)benzene, were investigated and compared with those of dianhydri…
A novel thermoresponsive Cu(II) ion-imprinted hydrogel [Cu(II)-IIH] with interpenetrating network structure has been prepared to remove Cu(II) ions with high selectivity. The Cu(II)-IIH was prepared by free radical/cationic hybrid photopolymerization of N-isopropylacrylamide (NIPAM) and triethylene glycol divinyl ethe…
ZnTe nanocrystals were synthesized in NaOH solution by hydrothermal method and they were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and micro-Raman spectroscopy. The results indicate that the ZnTe nanocrystals were crystallized in cubic zincblende structure and their morphologies…
Nickel nanoparticles have been created in an organic-based matrix by the reaction of Ni(COD)2 (COD = 1,5-bis-cyclooctadiene) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (TCNQF4). The size of the nickel nanoparticles can be controlled by the use of different solvents and inclusion of tetrahydrofuran (THF)…
The homoleptic and heteroleptic iridium(III) complexes exhibiting orange phosphorescence were investigated to compare their emission colors, luminance efficiency, and stability. The homoleptic iridium complexes, Ir(pbt-R)3, were prepared from the reaction of the iridium(III) precursor and phenylbenzothiazole derivativ…
This paper reports a single-step process to fabricate superhydrophobic micro/nano dual-scale (MNDS) poly(dimethylsiloxane) (PDMS) membrane replicated directly from ultra-low-surface-energy MNDS silicon substrate at high temperature without surfactant coating. MNDS silicon surface with ultra-low surface energy was simp…
A variety of lipidated molecules with different self-assembling properties were designed and synthesized. These molecules showed sea urchin, fibers and tubular morphologies.
半導体工場で発生する汚泥はSiO2、Al2O3を多く含有することから、クリンカー原料としての活用が期待されている。しかし、この汚泥には酸化セリウム（CeO2）や酸化ランタン（La2O3）が含まれており、これを原料として用いるクリンカーおよびセメント物性への影響が懸念される。本研究ではLa2O3を最大で2.98％含有するクリンカーおよびセメントを試製し、その各種物性を調べた。その結果、La2O3が焼成反応性および・被粉砕性に及ぼす影響は認められなかった。La2O3量が増加するにつれクリンカー中のアルミネートが増加し、フェライトが減少した。また、La2O3量が増加に伴ってセメントの凝結は遅延し、圧縮強さは低下した。これは、La2O3が…
Nowadays the term ferroresonance is firmly established in the power system engineer's vocabulary as one of the most destructive transient phenomena, which may cause failures in power equipment such transformers, cables, or arresters. Its complex non-linear behavior makes difficult its characterization. This work links…
1 Reactor Engineering Division, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia 2Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, Bautzner Landstrase 400, 01328 Dresden, Germany 3 Commissariat a l’Energie Atomique (CEA), 17 rue des Martyrs, 38054 Grenoble, France 4Thermal-Hydraulic Safety…
The formation of a cementite phase influences significantly the macroscopic mechanical and magnetic properties of steels. Based on a correlation between mechanical and magnetic properties, mechanical properties as well as the morphology and content of the cementite phase can be inspected by electromagnetic non-destruc…
This paper studies the thermoelastic analysis of thick hollow cylinder made of two-dimensional functionally graded material (FGM) by finite element method. The FGM cylinder with finite length is simply supported and subjected to thermal and mechanical loading. The mechanical and thermal properties are graded in the ra…
Sputtered Ti/ZrO2/Pt is investigated for its bi-stable conduction and transition properties. The transition voltage and current vary with the current compliance setting, while the conduction currents in on and off states show different dependence on the top electrode diameter. Both results provide insights into the re…
The impact sensitivity is a very important property for indicating the safety, reliability and stability of high-energy-density materials (HEDM). A quantitative structure-property relationship (QSPR) study was used for prediction of impact sensitivity of some nitro compounds. Employing the square of nitro group charge…
We propose a sharp-interface model which describes rate-independent hysteresis in phase-transforming solids (such as shape memory alloys) by resolving explicitly domain patterns and their dissipative evolution.We show that the governing Gibbs' energy functional is the $\Gamma$-limit of a family of regularized Gibbs' e…