Materials Literature
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The objective of this study was to compare the effectiveness of silk membranes (SMs) of different thicknesses for guided bone regeneration. Two kinds of SMs were prepared (SM1: 0.01 mm thickness, SM2: 0.5 mm thickness). Before use in animal experiments, scanning electron microscope images were taken to examine the gro…
Simulations of shingled thermally assisted magnetic recording were carried out. The head field distribution and head field gradient had little effect on the signal-to-noise ratio of shingled tracks, whereas the heat spot radius and medium parameters had a much more significant influence. An areal density of 8 Tbit/in2…
Highest performance Fe-Nd-B-based permanent magnets offer only low cost-effectiveness and shortened lifetime, both induced by their rare-earth (RE) content. Thus, the necessity for novel hard magnetic phases with better available RE metals, reduced RE content or fully free of RE is immense. As the number of so far une…
Time-dependent magnetic domain patterns of Co/Pt multilayer with a perpendicular magnetic anisotropy has been directly observed by a magneto-optical Kerr microscopy. From our direct domain observation, it is revealed that, when a negative exposure field has been applied after positively saturating the film first, the…
This work deals with the process of ammonia gas sensor fabrication and its detailed characterization. The sensor active layer was deposited from a polyaniline dispersion. The prepared polyaniline dispersion is based on poly(N-vinylpyrrolidone), acting as a dispersion stabilizer. The dispersion synthesis was tuned towa…
We present the magnetic, transport, and structural properties of GaMnP with different Mn concentrations prepared by ion implantation and pulsed laser annealing. The Curie temperature increases with Mn concentration and the samples show in-plane magnetic anisotropy due to the in-plane compressive strain in the GaMnP la…
We comparatively investigate the influence of various high-permeability alloys on the hysteretic and remanent resonant magnetoelectric (ME) response in a composite of magnetostrictive nickel (Ni) and piezoelectric Pb(Zr 1− x , Ti x )O 3 (PZT). In order to implement this comparative research, Co-based amorphous alloy (…
In situ atomic force microscopy (AFM) experiments were used to study the effect of trace amounts of a commercial inhibitor on the (001) baryte surface during growth. The additive tested was a copolymer, used as a scale inhibitor in oil recovery (maleic acid/allyl sulfonic acid copolymer with phosphonate groups, partia…
Virtual measuring instruments, as well as their operation, are described during measurement of the characteristics of the objects under study. Their objectives and tasks are discussed in proving the correctness of solving incorrect inverse problems. It is demonstrated that a virtual scanning electron microscope must i…
Convex Arrhenius behaviour, rare in transitions between equilibrium phases of pure systems, is observed in the plot of heating rate vs. temperature for Nematic-Isotropic (N-I) transition of liquid crystalline MBBA through Differential Scanning Calorimetry (DSC). The plot is best fit by a monomolecular growth function,…
New non-linear cross-conjugated polyenes containing a central 4-ylidene-substituted pyran or N-methyldihydropyridine ring have been synthesized. Interaction of chromophores in these compounds occurs through the ylidene group linked to the heterocycles.
The activity of Co/ZnO and Rh/Al 2 O 3 catalysts in ethanol steam reforming was studied in a traditional tubular reactor with a fixed catalyst bed and in a microchannel reactor. At temperatures of 600 and 700°C, the Rh/Al 2 O 3 catalyst was much more active and stable than Co/ZnO. A comparison between the reactors of…
X-ray microtomography is used to study the internal structure of paleontological objects, but there are disadvantages of the method which greatly limit the effectiveness of the research. Therefore, in this work tomography using thermal neutrons and synchrotron radiation is applied to study the internal structure of pa…
The graphene oxide (GO) nanosheets were produced by chemical conversion of graphite, and were characterized by transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR). An electrochemical sensor based on Ni/graphene (GR) composite film was developed by incorporating Ni 2+ into the graphe…
Developments in the field of organic–inorganic lead halide perovskite based solar cells have metaphorically opened the door to an exciting new solid state photovoltaic technology that retains the low cost and processability benefits of dye sensitised solar cells (DSCs). Encouraging device efficiencies of greater than…
The dynamics of liquid argon (∼49 000 atoms in a cubic periodic cell) near the triple point is simulated. Two-particle correlation functions describing the simultaneous diffusive displacement of a pair of particles are calculated. Time dependence of the mean scalar product of the displacement vectors of two particles…
We have carried out 63,65 Cu NMR spectra measurements in a magnetic field up to about 15.5 T on a single crystal of the multiferroic triangular-lattice antiferromagnet CuCrO 2 . The measurements were performed for perpendicular and parallel orientations of the magnetic field with respect to the c axis of the crystal,…
Theoretical bases of an non-steady-state electrochemical technique for determination of kinetic characteristics of injection, extraction, and diffusion of atomic hydrogen in compact homogeneous binary palladium alloys are presented. The hydrogenation process is simulated under potentiostatic control conditions taking…
Binary polymer blends of hydrophobic poly(vinylidene fluoride) (PVDF) and hydrophilic poly(vinylpyrrolidone) (PVP) were prepared by melt blending. The crystallization behavior, mechanical properties and hydrophilicity of the binary blends were investigated using Fourier transform infrared spectroscopy (FTIR), wide-ang…
Natural bone ECM is a hierarchical nanocomposite made of an inorganic phase deposited within an organic matrix. In order to mimic the bone highly organized hybrid structure and functionality, strategies that allow assembling ceramic and polymer phase can be applied. To this aim, we investigated aninsitugrowth method a…