Materials Literature
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Modelling was carried out to investigate the internal dendrite grains structure formation from a liquid two-component solution in the area adjacent to a mould wall. For the simulation, our own model and computer program based on CAFD (Cellular Automata Finite Differences) were used. In modelling, the effect of process…
Abstract After an introduction into the general characteristics of the jamming behavior, two filler flocculation experiments on a polycarbonate melt filled with multi‐walled carbon nanotubes and on a silica‐filled ethylene propylene diene monomer elastomer are presented. We propose that these experiments can be regard…
Substituted strontium ferrite SrFe12−xCrx/2Alx/2O19 (x=0–2.5) was prepared by sol-gel method. Ac susceptometer, and F57e Mössbauer spectroscopy were used to analyze the structure, static and dynamic magnetic properties of the prepared samples. Mössbauer spectra show that Al–Cr ions preferentially occupy the 12k sites.…
The influence of galvanic coupling of mild steel (MS) with titanium, copper, brass, nickel and stainless steel (SS) on the phosphatability is elucidated. The galvanic couple accelerates metal dissolution, enables quicker consumption of free phosphoric acid and facilitates an earlier attainment of point of incipient pr…
In this study, we performed molecular static simulations to investigate the enhanced elastic modulus of multiply twinned nanowires (MTNs) that had fivefold twin planes. MTNs have the same size-dependent elastic behavior as twin-free nanowires (TFNs), however, the simulation results reveal stiffer elastic behavior of M…
The crystal structures and electric properties of epitaxial (1- x )BiFeO 3 – x BiCoO 3 thin films with x = 0–0.30 prepared by chemical solution deposition on SrTiO 3 (001) and SrRuO 3 (001)/SrTiO 3 (001) substrates were investigated. The crystal structures changed from rhombohedral to tetragonal at x = 0.15–0.2. Satur…
We probe the relation between rheology and shear-induced relaxation in experiments on two-dimensional foams at steady shear. The characteristic relaxation time t r , which we extract from the non-affine part of the bubble displacements, scales non-linearly with the local strain rate . In particular, the relative stren…
Abstract Results of the influence of diverse initial surface treatment methods on corrosion resistance of Ti‐6Al‐4V ELI alloy after anodic oxidation are presented in the work. The initial surface treatment consisted of: shot peening, mechanical polishing, sandblasting and electrolytical polishing. The pre‐prepared sam…
In this work, ZnO-based metal–semiconductor–metal photodetectors with and without a ZnO cap layer were fabricated on flexible substrates of poly(ethylene terephthalate) (PET) for comparative analysis. The ZnO films were prepared by a low-temperature sputtering process. The photodetector with a ZnO cap layer (stack str…
The appearance of stripe domains is strongly affected by various cell conditions such as thickness, applied voltage, and surface alignment. In this work, we adopt hybrid surface alignment to investigate the appearance of stripe domains under asymmetric surface anchoring. It is observed that the stripe direction rotate…
The static and time-dependent magnetic properties of Bi(Fe0.95Co0.05)O3 have been investigated by dc and ac magnetization measurements. Cluster spin glass has been confirmed to be the ground state due to the frustration of the interaction between the ferromagnetic clusters by canted antiferromagnetically arranged Fe s…
Electromagnetic properties of nickel–zinc ferrites based materials make them potential candidates for applications linked to telecommunications. In the present study, nanosized particles of spinel ferrite Ni0.5Zn0.3Co0.2Fe2O4 were prepared by coprecipitation method. An optimized material is obtained after adequate hea…
The variation in the permeability of a multilayered polyvinylidene fluoride/CoFeB (piezoelectric/magnetostrictive) composite material under the action of a dc voltage is demonstrated. The driven-voltage permeability is first predicted using a finite element method-based multiphysics calculation. The simulation allows…
This review emphasizes the role of phosphorus for the elaboration of dendrimers and of various highly sophisticated dendritic structures, and the invaluable role played by 31 P NMR for their characterization and to ascertain their purity. A few properties, highlighting the importance of phosphorus are reported at the…
Magnetic nanoparticles have been proposed for biomedical applications for several years. Various research groups worldwide have focused on improving their synthesis, their characterization techniques and the specific tailoring of their properties. Yet, it is the recent, impressive advances in nanotechnology and biotec…
We study the linear phenomenological Maxwell’s equations in the presence of a polarizable and magnetizable medium (magnetodielectric). For a dispersive, nonabsorptive, medium with equal electric and magnetic permeabilities ε(ω) and μ(ω), the latter can assume the value of −1 (+1 is their vacuum value) for a discrete s…
The purpose of this paper is to address both the high values, and the large variation in reported values for the energy requirements for the production of carbon nanotubes. The paper includes an estimate of the standard chemical exergy for single walled carbon nanotubes, as well as a historical look at how the minimum…
This paper investigates the origin of large magnetostriction in Fe–Ga alloys using small-angle neutron scattering (SANS) and Kerr microscopy. The SANS data for a single-crystal, electron irradiated, and quenched Fe81Ga19 sample under externally applied magnetic and elastic fields revealed the existence of magnetostric…
Systematic ab initio LDA calculations were performed for all the typical representatives of recently discovered class of iron-based high-temperature superconductors: REOFe(As,P) (RE = La, Ce, Nd, Sm, Tb), Ba2Fe2As, (Sr,Ca)FFeAs, Sr4Sc2O6Fe2P2, LiFeAs and Fe(Se,Te). Non-monotonic behavior of total density of states at…
The use of biological materials in the construction of bioprostheses requires the application of different chemical procedures to improve the durability of the material without producing any undesirable effects. A number of crosslinking methods have been tested in biological tissues composed mainly of collagen. The ai…