Materials Literature
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Carbon nanotubes possess unique properties that make them potentially ideal materials for various technological applications. However, a basic growth mechanism explaining the way metallic atoms interact with carbon to nucleate, grow and heal CNTs still needs to be understood. In this review paper we describe the mecha…
The paper presents resistivity and magnetization measurements on nearly stoichiometric Fe3Si films epitaxially grown on GaAs substrates by electron-beam evaporation in an ultrahigh vacuum chamber. In the low-temperature resistivity a T3 term was found in all samples. A term like that is known to describe the anomalous…
PIN-PMN-PT (Pb(Infrac12Nbfrac12)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3) single crystals with 26%-59% PIN were successfully grown by Bridgman technique. Elastic, dielectric and piezoelectric properties of ternary PIN-PMN-PT crystals were studied in comparison with PMN-PT (Pb(Mg1/3Nb2/3)O3- PbTiO3) crystals. It was demonstrated tha…
A nanofiber nonwoven textile with metallic magnetic material coating was fabricated, and the effect of electromagnetic wave shielding was evaluated. The nanofiber nonwoven textile with an average diameter of about 500 nm was spun by electrospinning. The metallic magnetic material was coated by sputtering on the textil…
The magnetic properties of electrical steel such as magnetization behavior and specific magnetic losses are related to the microstructure and texture of the steel. The interest in the case of FeSi-alloys is to realize a low intensity on the {111} fiber, which is a different goal than that of conventional steels, where…
Electron beam irradiation of amorphous GeSe4 thin films reveals formation of reliefs and trenches as a function of electron beam dose. Mounds as high as 115nm are observed at low electron beam dose and trenches as deep as 180nm at high dose. The geometry of trench and mound formation is examined as a function of elect…
The charge properties, under electron irradiation, of three types of glasses are studied by employing scanning electron microscope (SEM) associated with the technique called the electrostatic influence method. The experimental conditions are closed to those of typical field emission display (FED) operation. To determi…
Abstract In Lepidoptera and Trichoptera, a blend of sericin proteins seals the pair of fibroin filaments into the silk fiber that is coated by additional layers of adhesive sericins. The structure and function, and even the number of sericin proteins, are poorly known. Most sericin applications to date employ mixtures…
A thin Ba 3 Ca 1.18 Nb 1.82 O 9−δ (BCN18) membrane electrolyte was prepared by a novel and facile method on a NiO–BCN18 anode substrate. The interesting aspect of the method was the adoption of a in situ reaction of BaCO 3 , CaCO 3 , and Nb 2 O 5 on the anode substrate to prepare a dense BCN18 membrane. The BCN18 memb…
Abstract Today Cocamidopropyl Betaine (CAPB) is the most important secondary surfactant used in personal care and household products. Even the most modern CAPB-types still contain more water than active matter. Water which needs to be heated in the manufacturing process, which needs to be transported, and needs to be…
Abstract Summary: Polyesters produced from renewable resources and susceptible to hydrolysis under the industrial composting conditions offer ecological advantages as compared to thermoplastics polymers and elastomers produced from fossil carbon sources. In this paper the degradation behaviour of polymer compositions…
Nanowire arrays of Co and Ni have been obtained by current pulse electrodeposition into nanoporous alumina templates. By adjusting the pH of the bath, the microstructure of the Co wires was tailored, resulting in two types of arrays of crystalline Co--hcp, with c-axis nominally parallel (Co (c parallel)), or nominally…
A molecular dynamics simulation of the plastic deformation and the onset of fracture of nanocrystalline metals is performed using the example of copper. Successive stages of the response of the microstructure of a metal to deformation are considered, namely, grain boundary sliding, the nucleation and gliding of disloc…
The electronic structures and defect formation energies for a series of stannate pyrochlores Ln2Sn2O7 (Ln=La, Pr, Nd, Sm, Gd, Tb, Ho, Er, Lu, and Y) have been investigated using the first-principles total energy calculations. The calculated results show that Ln-site cation ionic radius, x-O48f, lattice constant and th…
A simple method for high-yield, chemical vapor deposition (CVD) synthesis of serpentine carbon nanotubes, employing quartz substrates and a molecular cluster catalyst, is described. The growth mechanism is analyzed by controlled addition of nanoscale barriers, and by mechanical analysis of the curved sections. The ser…
The dependence of the room temperature magnetostriction on substituting Fe by different X elements (X = Al, Ga, Si, Ge) is discussed. All Fe-X alloys exhibit at the Fe-rich side a similar phase diagram where first a disordered A2 and then an ordered B2 and/or DO3structure is formed. The magnetostriction lambda100incre…
Abstract Five styrene-butadiene rubber (SBR)/clay nanocomposite or hybrid systems were synthesized via mechanical mixing of SBR using a Brabender mixer and a 2-roll mill in the presence of unmodified sodium montmorillonite (Na-MMT) clay, MMT modified with octadecylamine (C18amine), MMT modified with a zwitterionic sur…
Decellularized extracellular matrix has been suggested as a scaffold for heart valve tissue engineering or direct implantation. However, cell removal impairs the physical properties of the valve leaflet structure and the biomechanical properties of the valve leaflet. Matrix/polymer hybrid scaffold with improved biomec…
Abstract Three-fold symmetrical pyridinium salts tethering tridodecyloxyphenyl substituents form liquid-crystalline columnar and micellar cubic phases and exhibit photoluminescent properties in liquid-crystalline states.
In this work, polypropylene (PP)/polystyrene (PS) blends with different organoclay concentrations were prepared via melt compounding. Differing from the results of previous reports, the organoclay platelets are mostly located in the dispersed PS phase instead of the interface. The dimensions of the dispersed PS drople…