Materials Literature
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The three-dimensional microstructure of levitation melted TiNi1.20Sn has been characterized using the TriBeam system, a scanning electron microscope equipped with a femtosecond laser for rapid serial sectioning, to map the character of interfaces. By incorporating both chemical data (energy dispersive x-ray spectrosco…
It has been shown that 300-nm-thick polycrystalline films of lead zirconate titanate (PZT), the compositions of which correspond to the region of morphotropic phase boundary, undergo anomalous changes in the composition and the microstructure as the annealing temperature increases. This causes substantial variations i…
Phosphates R 0.33Zr2(PO4)3 (R = Nd, Eu, or Er) and Er0.33(1–х)Zr0.25Zr2(PO4)3 (х = 0, 0.25, 0.5, 0.75, 1.0) of the NaZr2(PO4)3 family have been synthesized and investigated by high-temperature X-ray diffraction. The crystallochemical approach is used to obtain compounds with expected small and controllable thermal-exp…
Single phase polycrystalline samples of BaTi1−xAlxO3, 0 ≤ x ≤ 0.015, have been prepared by a conventional powder processing method. The Rietveld refinements of X- ray powder diffraction patterns at room temperature indicate that the samples crystallize in tetragonal structure with group symmetry P4mm. Because of the o…
It is shown that, when magnetic ordering occurs in layered iron-containing langasites (sp. gr. P321), one of the reasons for spin chiralities of different signs is the presence of structural chirality (the existence of inversion twins), which, in turn, is due to the nonsymmetricity of these crystals. Spin helicoids ar…
It is recognized that the stability and journey in the body of nanoparticles are important issues for drug formulations. In this study, we prepared folate-conjugated pullulan acetate nanoparticles (FPANs) and epirubicin loaded FPANs (FPA/EPI) using dialysis method. The storage stability of FPANs and FPA/EPI at 4 degre…
Advanced GGA + U (Hubbard) and modified Becke–Johnson (mBJ) techniques are used for the calculation of the structural, electronic, and optical parameters of α -Al 2− x Co x O 3 ( x = 0.0, 0.167) compounds. The direct band gaps calculated by GGA and mBJ for pure alumina are 6.3 eV and 8.5 eV, respectively. The mBJ appr…
The aim of the investigation was to study the biological and mechanical properties of silk fibroin films and composite silk fibroin films containing 30% collagen by weight.
A high-throughput multi-plume pulsed-laser deposition (MPPLD) system has been demonstrated and compared to previous techniques. Whereas most combinatorial pulsed-laser deposition (PLD) systems have focused on achieving thickness uniformity using sequential multilayer deposition and masking followed by post-deposition…
The synthesis of poly(2,2,3,4,4,4‐hexafluorobutyl acrylate) (PHFBA) thin films using plasma enhanced chemical vapor deposition (PECVD) method is reported. PHFBA is a non‐toxic and low surface energy polymer containing a –CF 3 end group, which makes PHFBA a suitable hydrophobic finish. The effects of plasma power and s…
Iron-manganese-doped sulfated zirconia nanoparticles with both Lewis and Brønsted acidic sites were prepared by a hydrothermal impregnation method followed by calcination at 650°C for 5 hours, and their cytotoxicity properties against cancer cell lines were determined. The characterization was carried out using X-ray…
The behavior and the properties of Ni50Mn50-y Ti y (y = 5, 10, 15, 25, 30) alloys are studied by electrical resistivity measurements, transmission electron microscopy, scanning electron microscopy, and X-ray diffraction over a wide temperature range. It is found that the martensite transformation temperature of the co…
Abstract This book provides systematic knowledge and ideas on nanoparticles of Ag and related materials. While Ag and metal nanoparticles are essential for plasmonics, silver halide (AgX) photography relies to a great extent on nanoparticles of Ag and AgX which have the same crystal structure and have been studied ext…
Surface chemistry modifications have been exploited in many applications in order to tune protein adsorption, layer formation, and aggregation. However, the kinetic processes by which surface chemistry influences protein adsorption and aggregation remain elusive. By combining intermolecular resonance energy transfer (…
Single-phase pristine and cation-substituted calcium manganite (Ca 1− x Bi x Mn 1− y V y O 3− δ ) polycrystalline samples were synthesized by the solid state reaction technique. Their thermoelectric properties were measured by a set up that was designed and assembled in the laboratory. The Ca 1− x Bi x Mn 1− y V y O 3…
The synthesis of graphene layers on a nickel substrate in a butane–benzene–oxygen premixed flame at a pressure of 40–100 Torr is studied. It is demonstrated that, the temperature of 900–950°C and exposure time of 0.5 min are sufficient for synthesizing graphene layers on a nickel substrate. It is shown that, at a pres…
In this paper, an ultra-thin triple-band microwave metamaterial absorber has been presented which consists of a composite tetra-arrow ring structure imprinted on grounded dielectric substrate. Full-wave simulation shows three distinct absorption peaks at 4 GHz, 6.54 GHz, and 11.15 GHz with absorptivities of 95.27%, 98…
We report through-space (TS) (19)F-(19)F coupling for ortho-fluoro-substituted Z-azobenzenes. The magnitude of the TS-coupling constant ((TS) JFF ) ranged from 2.2-5.9 Hz. Using empirical formulas reported in the literature, these coupling constants correspond to non-bonded F-F distances (dFF) of 3.0-3.5 Å. These non-…
Many spider orb-webs are exposed to sunlight and the potentially damaging effects of ultraviolet B (UVB) radiation. We examined the effect of UVB on the viscoelastic glycoprotein core of glue droplets deposited on the prey capture threads of these webs, hypothesizing that webs built by species that occupy sunny habita…
The selectivity of liquid phase semihydrogenation of diphenylacetylene for cis-stilbene is remarkably improved by increasing Pd particle size due to different structure sensitivity of alkyne and alkene hydrogenation steps.