Materials Literature
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The effect of Sr addition on the as-cast microstructure of AS31 alloy was studied. The experimental results show that the grain size decreased obviously from 1116μm to 221μm for AS31 alloy with addition of 0.05%Sr, and promote the formation of globular grains. The morphology of eutectic Mg 2 Si phase is changed from C…
We present the phase diagram of a system of mesogenic top-shaped molecules based on the Parsons-Lee density functional theory and Monte Carlo simulation. The molecules are modeled as a hard spherocylinder with a hard sphere embedded in its center. The stability of five different phases is studied, namely, isotropic, n…
This work presents a secondary CCSL model to interpret newly observed orientation relationships of fcc Mg 2 Sn precipitates and bcc Mg 32 (Al, Zn) 49 precipitates with respect to Mg matrix. The morphologies of these precipitates are characterized with a common feature of well defined facets. The orientations of these…
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The microstructure and mechanical properties of AZ31 magnesium alloys were investigated in this paper. AZ31 magnesium alloys were cryogenically treated at -196°C for 1, 5 and 24 hours, respectively. The results showed the grains of AZ31 were initially refined and grew up with the increase of cryogenic time, the second…
The effect of sintering temperature on pulse aging behavior of ZnO–V 2 O 5 –MnO 2 –Co 3 O 4 –Dy 2 O 3 –Nb 2 O 5 varistors was investigated. The sintering temperature did have a significant effect on clamp ratio, which exhibits a pulse‐current handling capability. The varistors sintered at 900°C exhibited the best clam…
Manganese phosphate conversion coating was prepared by adding addition agent towards phosphate bath. The structure was investigated using SEM/EDX, and the anti-corrosion performance was evaluated by electrochemical technique. It was found that the film presented in crystal structure, and the crystalloid grain transfor…
In this work, we present a study on the microwave frequency absorption of PVC/γ-Fe2O3, PVC/Fe3O4, and PVC/CoFe2O4/CoO nanofibers. The composite nanofibers with size ranging between 100 nm and 1 μm where obtained by electrospinning technique. The absorption properties of synthesized nanofibers were measured between two…
The (1‐ x ) PbTiO 3 ‐ x BiMeO 3 (Me = Fe, In, Sc) solid solutions were prepared and investigated using high‐temperature X‐ray diffraction for the B‐site dopant effect on their thermal expansion behaviors. Compared with PbTiO 3 , the negative thermal expansion of (1‐ x ) PbTiO 3 ‐ x BiFeO 3 was enhanced, whereas that o…
Information on the size and structure of nanoparticles can be obtained via analysis of the atomic pair distribution function (PDF), which is calculated as the Fourier transform of X-ray/neutron total scattering. The structural parameters are commonly extracted by fitting a model PDF calculated from atomic coordinates…
A holographic technique for fabricating an electrically switchable liquid crystal/polymer composite Fresnel lens is reported. A Michelson interferometer is used to produce the required Fresnel pattern, by placing a convex lens into one path of the interferometer. Simplicity of the method and the possibility of fabrica…
The influence of the isovalent substitution of selenium for sulfur in the anion sublattice of mixed TlInS 2(1− x ) Se 2 x crystals has been studied by means of dielectric measurements. It is shown that transformations in the In 4 (S x Se 1− x ) 10 structural unit must be taken into account considering the nature of po…
Understanding the adsorption of gold nanoparticles (AuNPs) on self-assembled monolayers (SAMs) is important because an assembly of the AuNPs-SAM-gold substrate provides easily controllable metal–metal junctions, in which fascinating phenomena such as electron tunneling and surface-enhanced Raman scattering can occur.…
A series of five alumina-supported palladium catalysts have previously been prepared and characterised by a combination of CO chemisorption and infrared spectroscopy. The reactive attributes of these catalysts are examined using the hydrogenation of crotonaldehyde as a test reaction, using a modified infrared gas cell…
The effective thermal conductivity of silicone/phosphor composites is studied experimentally and numerically. Thermal conductivity measurements are conducted from 30°C to 150°C for the composites with phosphor volume fraction up to 40%. In the numerical study, a finite element model with empirical particle size distri…
Spontaneous magnetization above room temperature is observed in a coordination π–π framework of 1D polymeric Cu(II) chains with 2,2′-bipyridine ligands. The magnetic susceptibility data indicate that at lower temperature region the crystal shows the usual paramagnetism due to Cu(II) ions but becomes ferromagnetic at h…
Growing evidence has indicated the potential adverse effects on cardiovascular system of some nanomaterials, including fullerenes. In this study, we have evaluated the biological effects of multiwall carbon nano-onions (MWCNOs) (average size of 31.2 nm, ζ potential of 1.6 mV) on human umbilical vein endothelial cells…
We report optical microscopy measurements of three-dimensional trajectories of individual multiwalled carbon nanotubes (MWCNTs) in nanoscale silica slit pores. Trajectories are analyzed to nonintrusively measure MWCNT interactions, diffusion, and stability as a function of pH and ionic strength. Evanescent wave scatte…
Fragment-based drug discovery (FBDD), which is a molecular build-up strategy from small scaffolds, has recently become a promising approach for lead-compound generation. Although high-throughput protein crystallography is usually used to determine the protein–ligand complex structure and identify potential hit compoun…
INTRODUCTION: Cardiac glycosides in Calotropis procera have therapeutic use as inhibitors of Na⁺/K⁺-ATPase to regulate heart contractions. A large amount of research attention has been received by these compounds towards their identification and structural characterisation. In order to achieve rapid identification of…