Materials Literature
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The anisotropic alignment of boron nitride (BN) nanosheets was performed in polysiloxane/BN nanosheet composite film under a DC electric field with a change in polarity. The hexagonal BN nanosheets were dispersed by sonication in a prepolymer mixture of polysiloxane followed by high-speed mixing. The homogeneous suspe…
Investigation of the stress concentration in the nanomultilayer materials under exploitation conditions is the main objective of the work. During loading a failure can initiate and propagate, which have important impact on material strength and reliability. This is of importance when materials for biological applicati…
The objective of this experimental study was to determine the wear resistance of moldboard plowshares produced from 30 MnB5 steel that were treated with different martempering conditions. The microstructures, the hardness distributions, and the wear behavior of the martempered 30 MnB5 steel were determined and compare…
Here we report the metallophilic attraction driven gel-forming capability of four cysteine-containing short peptides at neutral pH. Such peptides were designed to have an isoelectric point (pI) close to 7, aided by the introduction of an arginine unit with its highly basic guanidinium group.
We have developed a minimally-perturbing strategy that enables labeling and subcellular visualization of endogenous dendritic receptors on live, wild-type neurons. Specifically, calcium-permeable non-NMDA glutamate receptors expressed in hippocampal neurons can be targeted with this novel synthetic tri-functional mole…
Abstract An experimental circulating water loop was built to follow the formation, the transport, and the deposition of iron oxides in the feedwater system of the secondary circuit of PWR plants. The test section was made from carbon steel while all other parts of the loop were made from stainless steel. Tests were pe…
The authors report stoichiometry control and postdeposition annealing-free fabrication of Nb-doped transparent anatase TiO2 (A-TiO2:Nb) films on alkaline-free glass substrates by helicon-wave-excited-plasma sputtering. The films tended to crystallize in the stable electrically semi-insulating rutile phase. However, al…
We demonstrate experimentally that the director of a planar nematic liquid crystal cell with degenerated azimuth can be resolved by means of sparse paramagnetic inclusions actuated upon by weak magnetic fields. The use of ellipsoidal particles enables the characterization of the reorientation of the mesogen following…
Reaction of the Single Molecule Magnet [Mn(12)O(12)(CH(3)CO(2))(16)(H(2)O)(4)] (Mn(12)) with mesogenic dendritic ligands Li (i = 4, 5) quantitatively yields functional clusters [Mn(12)O(12)(Li-H)(16)(H(2)O)(4)] (i = 4, 5) that self-organize into a thermotropic SmA-type liquid crystalline phase. The perturbation of the…
This study presents the use of graphene sheets as a novel template to control the microstructure of mesoporous silica. The impurity-doped silica is confirmed to be under the pseudo-softening state at temperatures ≥600 °C. The mechanical strength of graphene sheets, catalytically formed in the same temperature range by…
Explosive welding of two dissimilar metallic sheets is accomplished by the exhaustive deformation owing to high pressure and high temperature created at the collision place. This study addresses the analytical estimation of the dissipation of potential energy of the explosive initially to mechanical energy and then to…
A series of Er3+/Yb3+ co-doped Sb2O3-WO3-Li2O glasses were prepared. Intense green upconversion fluorescence was observed near 524 and 544nm under excitation at 980 nm. The upconversion process was proved to be a two-photon absorption process. The upconversion fluorescence efficiency was enhanced by increasing introdu…
After more than a decade of intense research on NaAlH(4) doped with transition metals as hydrogen storage material, the actual mechanism of the decomposition and rehydrogenation reaction is still unclear. Early on, monomeric AlH(3) was named as a possible transport shuttle for aluminium, but never observed experimenta…
Joint Rietveld structural refinement of the neutron and X-ray powder diffraction data of PbTiO3 ceramics was carried out at room temperature. Crystallographic parameters, bond distances and bond angles thus determined are reported. The displacements of Ti and Pb atoms with respect to OII at 1/2 c were found to be 0.37…
The geometrical structures,band structures,density of states(DOS) and optical properties of undoped and doped rare earth elements(Y,La) in ZnO have been calculated from the first principles of plane wave ultra-soft pseudo-potential method based on density functional theory. After doping,the stability of structures are…
The tensile, flexural and impact properties of randomly oriented short Sansevieria trifasciata fiber/epoxy (STFE) composites were evaluated. Composites were fabricated using raw Sansevieria trifasciata fiber (STFs) with varying lengths (mm) and weight (%) percents of fibers viz. 10(30), 20(35), 30(40) and 40 (45). Whe…
The systematic variations of lattice structure and superconducting transition temperature in Sr(Pd 1− x Ni x ) 2 Ge 2 are reported. The X-ray diffraction patterns can be labeled by tetragonal I4/ mmm (no. 139) space group with only minor impurities, which indicates the substitution Ni into Pd sites is successful and f…
The biaxial response of a PVC-coated polyester fabric is investigated using three different test procedures. The influence of the test procedure on the experimental data is discussed. A new approach based on a response domain is proposed.
We investigate two-dimensional invisibility cloaking viatransformation optics approach. The cloaking media possess much moresingular parameters than those having been considered forthree-dimensional cloaking in literature. Finite energy solutionsfor these cloaking devices are studied in appropriate weightedSobolev spa…
This paper deals with the modeling of power transformers for calculation of switching transients based on mainly test report data. The paper is a follow-up of an IPST'07 paper and discusses the modeling and implementation of core saturation and losses in the Hybrid Transformer. A modified Frolich equation with knee-po…