Materials Literature
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In this work we will review some of the most promising new technologies for n- and p-type thin film transistors based on oxide semiconductors either in the form of nano-films or nanoparticles, with special emphasis to solution-processed, and we will summarize the major milestones already achieved with this emerging an…
A titania-supported nickel catalyst was prepared and tested in methanation in order to evaluate its catalytic properties (activity, selectivity and specially, activity loss), and compare it with an alumina-supported nickel catalyst. The titania-supported catalyst did not only show higher stability than alumina, but al…
Given the analytical description of the dependences of the impart of the errors of the position and shape of the contact surfaces on the contour and the relative area of the contact spot of mating surfaces, as well as on security soot. The solution of the inverse problem definition of permissible errors of position an…
Hot-compression of aluminum alloy 5182 was carried out on a Gleeble-1500 thermo-simulator at deformation temperatureranging from 350 °C to 500 °C and at strain rate from 0.01 s 1to 10 s 1with strain range from 0.7 to 1.9. The microstructures andmacro-textures evolution under different conditions were investigated by p…
The aim of this research was to modify polyamide 6 (PA6) either starting from low molecular weight end modified polymer or high molecular weight commercial grade by solution and/or solid-state polymerization (SSP) without destroying the crystalline phase. Synthetic approach consisted of first molecular mixing of all c…
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A complete model for the heavily doped and/or highly excited Si:P dielectric function is presented in the limit of the free-carrier gas approach. New interesting features of Si:P dielectric functions are presented and discussed. The influence of dopants and free-carriers is taken into account independently and their c…
Two kinds of gold nanoparticles with different surface-capping groups (Au-DT and Au-DT-CTAB), 1-dodecanthiol and cetyltrimethylammonium bromide (CTAB) are prepared by a two-phase method. Structures and linear optical properties of the materials are characterized using transmission electron microscopy and ultraviolet--…
La production d'aluminium est une industrie importante au Québec. Les propriétés de ce métal le vouent à de multiples usages présents et futurs dans le cadre d'une économie moderne durable. Toutefois, le procédé Hall-Héroult est très énergivore et des progrès demeurent donc nécessaires pour en diminuer les coûts finan…
La ricerca ha riguardato l’analisi dell’efficacia della protezione catodica di un asse portaelica del motore di imbarcazioni medio-grandi. L’asse è di acciaio inossidabile 17 4PH indurito per precipitazione ed è inserito in un astuccio cilindrico di acciaio inossidabile AISI 304. Nell’intercapedine tra i due compone…
Předložena prace se zabýva studiem kompletni struktury, tj. stanovenim tloustěk, poctu vrstev a drsnosti rozhrani ve vzorcich multivrstev, pomoci rentgenove reflexe. Metoda spociva v analýze rtg reflexni křivky a jejim srovnani se simulacemi. Zkoumany byly dva polovodicove vzorky, u kterých byla experimentalně stanove…
The behavior of thixotropics fluids through axisymmetrics expansions-contractions is studied in this research. The aim is to visualize the shear banding in the flow of a thixotropic fluid, which is the interface between a flowing fluid and a non-flowing fluid. This research uses an experimental appraoch to visualize t…
Photoemission electron microscopy (PEEM) employing phase-correlated femtosecond pulse pairs enables to investigate ultrafast dynamics of photo-excited nanostructured metals, where anomalous local fi eld enhancements are induced accompanied with surface plasmon resonances. Surface plasmon modes with specific coherence…
Stress-strain properties computations of furniture structural units have been performed. Group structure analysis of wood particle board durability was carried out by the means of the finite element method and experimental work. Efficient parameters of boards to be used in furniture structural units have been derived.…
The control of emulsion stability is of crucial importance in the process of crude/oil water separation, which is a key step in industrial oil production. Separation is enhanced if coalescence between droplets takes place, the extent of which will depend on the flow parameters as well as on the presence of emulsifying…
The authors present a method of homogenization used to solve nonlinear equilibrium problems of laminated plates exposed to transversal loads. The homogenization technique is a general and mathematically rigorous solution to elasticity problems. It describes the processes of deformation of composite structural elements…
The luminance and lifetime of OLEDs decrease dramatically with increased device operating temperature due to selfheating; this problem is particularly severe in OLEDs operated at high-brightness conditions. For stand-alone OLEDs, selfheating leads to measured rises in average temperatures of up to 60°C, with local tem…
In work tested method of extrusion for rods and tubes of compositions based on expanded graphite and various plastics, determined the strength characteristics of composites in compression, the features of the destruction process of polymer composite samples.
Abstract: The present work demonstrated to prediction of the damping property (tan delta) and delamination (interlaminar fracture toughness) in two types of stacking sequences first quasi-isotropic [0/90/45/-45? 6 q and second unbalanced stacking sequence [45/45/90/0? 6 q by dynamic mechanical analysis (Q880DMA) for…
We introduce a new photo electrode architecture, fabricated through facile synthesis of self-organized hollow TiO2nanocones under porous anodic alumina (PAA) featuring TiO2 nanotubes (NTs) within. PAA was grown directly on a fluorine-doped tin oxide substrate, which provided good contact for PAA-based dye-sensitized s…