Materials Literature
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Abstract Compared to other liquid crystalline mesophases, the Blue Phase exhibits extremely fast switching via induced birefringence by an external field. However, the pure Blue Phase is characterized by a rather narrow temperature range on the order of a few K. For display applications, one very promising way to broa…
Give chrome shavings an alkaline treatment using CaO and MgO together to extract the gelatin. Then protein polypeptide is extracted by hydrolyze the residue, which is left in the first step, with 1398 neutral proteinase. The best process condition is that when the usage of CaO is 3% (base on the mass of chrome shaving…
Magnetic and dielectric properties of conventional ceramics processed Ba 3 Co 2 Fe 24 O 41 hexaferrite were investigated for microwave antenna miniaturization. Iron deficiency and optimizations of technology conditions have been used to control the high frequency properties of Co 2 Z materials. The properties of the m…
O principal objetivo deste trabalho, é mostrar para os engenheiros(as) de soldagem e/ou projetistas de estruturas soldadas, as muitas opções existentes no projeto de juntas soldadas de filete, quando carregadas transversalmente, inclinada, ou paralelamente ao eixo do cordão de solda. Isto é feito através da discussão…
The phase stability of amorphous Ge 2 Sb 2 Te 5 (GST) films affects the performance and reliability of phase change memory (PRAM) devices. The viscosity and the glass forming ability of nitrogen (N)-doped amorphous GST films were investigated in terms of thermomechanical behavior using wafer curvature measurements. Th…
The influence of the surface chemical composition of carbon catalysts prepared by oxidative treatment on the basis of the Sibunit-4 carbon material of the Sibunit family on their catalytic properties in the liquid-phase oxidation of formic acid by hydrogen peroxide was studied for the first time. Pure carbon samples w…
An additional coating against wear or corrosion on component parts is required for many applications. These coatings protect the substrate material against external influences, thus increasing the economic lifetime of the component. Coating processes such as build-up welding and thermal spraying are well established a…
It has been shown that upon pearlitic transformation of a high-carbon vanadium steel, vanadium carbides 5–10 nm in size precipitate in the ferrite interspaces of the pearlite in the form of periodic rows (with a period of ∼20 nm). A correspondence between the distribution of vanadium carbides and the shape of the γ/α…
The electrochemical properties of a polypyrrole-polyimide composite are studied from the point of view of its prospective use as a material in polymer-based charge-storage devices, that is, rechargeable batteries and supercapacitors. The content of polypyrrole and the polarization potential of the composite are varied…
The addition of rare earth elements (REE) is an effective way to improve the corrosion properties of magnesium alloys. Dysprosium has a very high solubility in Mg (25.3 wt.% at 561 °C) and could therefore be a promising alloying element for Mg based implants. In this study, four binary Mg-xDy (x=5, 10, 15 and 20 in wt…
Hybrid photovoltaic (PV) cells containing CuInS 2 quantum dots (CIS QDs) incorporated into organic PV layers were developed through a simple solution process. Four types of such cells were fabricated by blending poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C 61 butyric acid methyl ester (P3HT:PCBM) and CIS QDs in weig…
In this paper, we present the fabrication and test of a carbon-nanotube (CNT)-based field emission ion source for a micro time-of-flight mass spectrometer (µ-TOF MS). The µ-TOF MS is composed of two parts, i.e., a field emission ion source and a mass analyzer. Molecules are ionized by the impact of electrons emitted f…
Graphene is the recently discovered two-dimensional (2D) one atom thick allotrope of carbon. Electrons in graphene, obeying a linear dispersion relation, behave like massless relativistic particles. It is a 2D nanomaterial with many peculiar properties. It is the thinnest material in the universe and the strongest eve…
Geometric, electronic and vibrational properties of the most stable and energetically favourable configurations of indium oxide clusters In m O n (1 ≤ m , n ≤ 4) are investigated using density functional theory. The lowest energy geometries prefer the planar arrangement of the constituent atoms with a trend to maximiz…
In the present work, magnetic nanocomposites of the multi-walled carbon nanotubes (MWCNTs) decorated with magnesium ferrite (MgFe2O4) nanoparticles were synthesized successfully by citrate-gel method. The shape, structure, size, and properties of the as-synthesized sample were characterized by Fourier transform infrar…
The structural changes of crosslinked polytetrafluoroethylene (XPTFE) by gamma ray irradiation in air at room temperature were studied by thermal analysis and SAXS techniques. The chain scission of irradiated XPTFE was predominant in room temperature and increased with an increase of dose. The crystallization is enhan…
In this paper, we prepared nitrile rubber (NBR) and polypyrrole (PPy) as conductive fillers of electrical conductive composites to improve their electrical resistivity and mechanical properties and application by single-step of in situ polymerization. Further, we discussed the optimization condition, nano-dispersibili…
Today it seems to be beneficial to investigate how nanoparticles can serve to improve the electrical properties of insulation materials and how this affects their behavior during processing and other physical or chemical characteristics. However; a crucial factor is the choice of the filling material in combination wi…
Solid oxide fuel cells (SOFCs) offer a number of advantages beyond those of most other fuel cells. However, like other fuel cells, rapid load following is difficult, and can lead to fuel starvation and consequently fuel cell damage. Mitigating fuel starvation and improving load following capabilities are conflicting c…
Abstract Layered double hydroxide–organic intercalation compounds were successfully synthesized by the solid–state reactions of magnesium hydroxide, aluminum hydroxide, and the guest species (p-toluenesulfonic acid, malonic acid, and oxalic acid) at room temperature. The present very simple synthesis is potentially ap…