Materials Literature
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In this study which can be seen as a nanomaterial or nanobiotechnology study; Metal and Metal+gas ions implanted to the polyester fabric's surfaces and by the help of this, lots of different abilities were provided to textiles. Without changing any structural properties of textiles, Cr, Ti ve C ions implanted to the P…
BaTiO3 ceramics doped with 1, 2, 3 and 4 mol% La were prepared by sol-gel method. The effects of La doping on structure and dielectric characteristics of Ba1−xLaxTiO3 were investigated. The results show that: All the powders calcined at 800°C were found to be perovskite structure with cubic phase. Ba1−xLaxTiO3 were si…
The properties of SMA (or smart materials), are associated with a first order phase transition named martensitic transformation, that occurs between metastable phases from the upper temperature phase (austenite) to the lower temperature phase (martensite). The first order transformation (in stress, deformation and tem…
We use numerical simulations to study the crystallization of monodisperse systems of hard aspherical particles. We find that particle shape and crystallizability can be easily related to each other when particles are characterized in terms of two simple and experimentally accessible order parameters: one based on the…
In the present research, whey was used as useful substrate which retained from permeates of dairy industry. The obtained whey was hydrolyzed to cleave its main carbon source, lactose to glucose and galactose.The hydrolyzed products were chosen as carbon sources for the production of poly-3-hydroxybutyric acid (PHB) by…
Optically encoded smart particles were prepared for noble drug delivery materials. Distributed Bragg reflector (DBR) porous silicon (PSi) was generated by applying a computer-generated pseudo-square wave current waveform. This DBR PSi film was lifted off from the Si substrate and thermally oxidized to convert PSi to p…
Abstract Dendrite growth is an important phenomenon during steel solidification. In the current paper, a numerical method was used to analyse and calculate the dendrite tip radius, dendrite growth velocity, liquid concentration, temperature gradient, cooling rate, secondary dendrite arm spacing, and the dendrite tip t…
The present study aims at analyzing the crack initiation in an austenitic stainless steel in low-cycle fatigue. A fatigue test was carried out using a polished specimen. The surface of the specimen was observed in-situ during the fatigue test, in order to establish the time of slip activity or crack initiation. After…
Single-crystalline ZnO nanorod arrays (ZNRs) were grown by metalorganic chemical vapor deposition on ZnO buffer/sapphire substrate without using any metal catalyst. The density of vertically aligned ZNRs was found to govern by the morphology and thickness of buffer layer. That is to say, the ZnO buffer layer can be us…
Abstract A method for grayscale photopatterning of an amorphous polymer film derived from a bisanthracene‐functionalized liquid‐crystalline monomer is developed. Solution photopolymerization of a monomer with two anthracene moieties, one at each end, affords an amorphous polymer. A combination of irradiation with patt…
Abstract Corrosion of different materials (Cu, Al, Al–Cu and C‐steel) in soil solution was evaluated at ambient temperature using various techniques. The weight loss of the studied materials varied exponentially with time. Kinetic data revealed that the corrosion of Cu and Al–Cu are diffusion controlled while Al and C…
The kinetics of the phase separation and the nematic phase growth in two melted commercial multi-component liquid crystal mixtures upon cooling was studied using polarising optical microscopy and IR spectrometry. The droplets of the nematic phase revealed in the optical images across the phase transition were segmente…
The direct component of the electric current induced in graphene placed in a constant magnetic field has been found in the case where two electromagnetic waves with two mutually perpendicular planes of polarization are normally incident on the surface of the sample. It has been demonstrated that the direct component o…
Composites consisting of Ce0.8Sm0.2O1.9 (SDC)-carbonate were developed as electrolytes for low temperature solid oxide fuel cells (LTSOFC). The SDC power was prepared by sol-gel method. The carbonates were binary eutectics of (Li/Na)2CO3, (Li/K)2CO3 and (K/Na)2CO3. Conductivity measurements showed that the conductivit…
The esterification kinetics of methacrylic acid with methanol in the presence of H3PW12O40 or H3MoW12O40 as a catalyst was studied with isothermal batch experimental. The catalyst concentration was varied between 14.4 and 57.7 mol/m3. The experiences were carried out at temperatures from 316 to 333 K and initial molar…
The low-energy excitations in the charge-ordered phase of polycrystalline La 0.25 Ca 0.75 MnO 3 are explored by frequency-domain terahertz spectroscopy. In the frequency range from 4 cm −1 to 700 cm −1 (energies from 0.4 meV to 90 meV) and at temperatures down to 5 K, we do not detect any feature that can be associate…
A rigid polyurethane-polyisocyanurate foam (PUR-PIR) was synthesized. Then it was ground in a plastic shredder and a ball mill. The resulting milling product was then glycolysed in diethylene glycol with addition of ethanolamine and zinc stearate. The foam was added at consecutive stages in batches, so that the total…
This article reports the study of the magneto-transport properties of Lanthanum-based colossal magnetoresistive sample, , as a function of temperature. The samples were prepared by the solid state route by sintering at three different temperatures 1100°C, 1250°C and 1350°C; with a view to understand the influence of v…
Using the Dirac-Bogoliubov-de Gennes equation, we study the electron transport in a graphene-based superconductor-normal(graphene)-superconductor (SNS) junction. We consider the properties of tunneling conductance through an undoped strip of graphene with heavily doped superconducting electrodes in the dirty limit l d…
Carbobystrite, ideally Na 8 [Al 6 Si 6 O 24 ](CO 3 )·4H 2 O, trigonal, a 12.6678(5), c 10.3401(4) A, V 1437.0(2) A 3 , c:a = 0.8162, space group P 31 c , Z = 2, R = 0.0271 (for 4861 observed reflections collected with a four-circle X-ray diffractometer), is a new cancrinite-group mineral species from Mount Koashva, Kh…