Materials Literature
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Recently, a Stress Migration (SM) failure mode in the metal line was explored and the failure was found to associate with unstable Cu microstructure in the narrow line and fast surface drift velocity at weak interface adhesion. In this work, we further investigate SM behavior in different material and process at Cu/ba…
We systematically investigated the phase transformation and grain-growth behaviors during sintering in 2 and 3 mol% Y2O3-stabilized tetragonal ZrO2 (2Y and 3Y) and 8 mol% Y2O3-stabilized cubic ZrO2 polycrystals (8Y). In particular, grain-boundary segregation and grain-interior distribution of Y3+ ions were examined by…
A new physical conductivity model of amorphous chalcogenide is proposed, based on carriers transport theory including hopping transport and trap-to-band transition. A numerical simulator based on this model is developed, and the simulation results agree well with the measurement. The ovonic switch voltage and current…
We investigated the optical properties of Ge1−x Se x and Ge1−x−y Se x As y amorphous films by using spectroscopic ellipsometry and Raman spectroscopy. The dielectric functions and absorption coefficients (α) of the amorphous films were determined from the measured ellipsometric angles (Ψ,Δ). We obtained the optical ga…
It was investigated that the effect of wear resistance of high-alumina ceramic with a series of Tb4O7 additives. It showed that wear resistance of ceramic firstly increased and then decreased with increasing of Tb4O7 doped. And we found that microscopic played the vital role to affect wear resistance of alumina cerami…
A series of highly efficient Y2O3:Eu cathodolumines-cent phosphors with submicron particle size is synthesized using either Pechnini process or self propagating high temperature synthesis. This approach provides the extension of application areas for such phosphors to some conditions where larger particles obtained by…
The process of field emission of complex metal-semiconductor systems is one of the most promising technologies, leading to a decrease in the threshold of the emission current as compared to pure metal. Quantum mechanical model which explains how the sprayed material affects the properties of the substrate were built.…
Grafting reactions between an n -decoxy derivative of ion-exchangeable layered perovskite HLaNb 2 O 7 · x H 2 O and polyethylene glycols (PEGs) with various molecular masses were investigated. X-ray diffraction analysis showed that a reflection corresponding to the interlayer distance of the n -decoxy derivative of HL…
This study attempted to dye the knit fabric with fluorescent dye in different shade percentages(5%,7.5% & 10% )and investigate their effects on physical properties of dyed fabrics e.g. strength, stiffness, fastness properties, k/s value, handle properties etc. Exhaust dyeing method was applied in the experiments for 1…
Solar cells based on transparent conductive oxides such as ZnO/Cu 2 O constitute a very advanced way to build high-performance cells. In this work, we are interested in the characterization of the interface through nanoscale modeling based on ab initio approaches (density functional theory, local density approximation…
Mixing two components in blend systems is an excellent way for developing new materials with improved properties. It is important to understand the thermodynamic characteristics of a composition and microstructure evolution of immiscible polymer blends, which are some of the major factors to control the final properti…
A mesoporous molecular sieve MCM-41 dimensional hexagonal arrangement has a diameter of 2-10 nm, thermal stability, high pore volume and high surface area. In the synthesis of MCM-41 is used as the CTMABr directing agent and tetraethyl orthosilicate (TEOS) as silica source. Several studies have been developed using th…
In this article the sewing needle heat is measured without sewing thread and with sewing thread at different stitch density (stitches per inch or SPI) of lock stitch sewing machine by thermocouples. Two methods are used to measure sewing needle heat, touch thermocouple method and inserted thermo couple method. Needle…
Abstract In this paper, we report a 7‐inch QVGA flexible PMOLED display. A 100‐um PEN substrates was laminated on glass by roll‐to‐sheet lamination process. Our process reveals no bubble producing after lamination. The array was by sheet‐to‐sheet process at Gen 4.5. The 14 inch quad‐QVGA PMOLED system is also proposed.
Neste trabalho foi realizada uma revisão dos principais aspectos encontrados na literatura especializada sobre corrosão de refratários, avaliando-se a viabilidade de determinados ensaios e relacionando-se com resultados experimentais. Refratários magnésia-carbono e doloma-carbono post mortem foram caracterizados quant…
Macrosegregation predictions have been performed for the alloy solidification in regular and irregular geometries. The continuum model is used to describe the mass, momentum, species, and energy transportation. Based on the same conservation equations, different discretization forms are derived for the orthogonal grid…
There are various types of structural components, which are subjected to hydrogen aggressive environment and cycling. Their unexpected failure occurs suddenly and may entail serious consequences such as emergency stop of equipment, failure of the structure etc. The special engineering models are developed to predict t…
Manganese dioxide is considered as one of the most promising materials for supercapacitor energy storage applications. On page 3130, H. N. Alshareef and co-workers present the morphological and electrochemical cycling effects in MnO2 nanostructures by three-dimensional electron tomography. The growth process of the va…
The purpose of this research is focused on developing a reliable plate heat exchanger made by Incoloy 800 (IN-800) alloy featured with high corrosion resistance in order to replace the current Cu brazed plate heat exchanger made by the 316 stainless steel. A Ni-based filler, MBF-51, was applied to braze the plate heat…
In the present work, a set of 2D global furnace simulations accounting for oxygen dissolution and transport have been used to predict Oi content along the produced Silicon crystal. It is shown that Oi content is sensitive to several growth parameters (melt level, crucible rotation, etc.). Results indicate Oxygen tends…