Materials Literature
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Purpose The key purpose of this study was to investigate the effects of different ultrasonic irradiation times on the wettability and other properties of the resulting water-based coating. The subject water-based coating was prepared using water-soluble polyester and amino resins by ultrasonic oscillation. Design/meth…
Abstract Iron and nitrogen co-modified titanium dioxide nanocomposites, nFe,N-TiO2 (where n = 1, 5 and 10 wt% of Fe), were investigated by detailed dc susceptibility and magnetization measurements. Different kinds of magnetic interactions were evidenced depending essentially on iron loading of TiO2. The coexistence of…
Direct methanol fuel cells (DMFCs) are becoming a choice of a power source in the field of power electronics, and portable devices because of their high energy density. The benefits of using a fuel cell toward the environment will be enhanced if the fuel used for its application comes from renewable sources such as et…
La industria electrónica ha crecido en los últimos cincuenta años, sobre todo en los países desarrollados, contribuyendo a su progreso económico. Particularmente en el Estado de Baja California ubicada en el noroeste de México, estas empresas han prosperado en los parques industriales de Mexicali considerada como una…
Paper mill using recycle fiber as raw material produces reject containing fiber and plastic. The reject was identified by means of sorting. Reject pellet was prepared by drying, followed by shredding, and pellets molding. It was analyzed for its proximate composition (moisture, ash, volatile matter and fixed carbon).…
In this paper, a 3-D resistance model is proposed for phase-change (PC) memory cell based on cell geometry and RESET current. Explicit expression is developed for PC radius in terms of RESET current, cell geometry, and material property. Conformal mappings are used for SET and RESET resistance calculation in 2-D model…
Gels, microgels, and matrices were prepared based on a previously developed recombinant spidroin, 1F9, produced by Saccharomyces cerevisiae yeast strain; their physical, chemical, and biological properties were investigated. It was shown that microgels obtained from 2.5% hydrogel are sized in the range of 50–300 μm, w…
We show that copper-matrix composites that contain 20 vol. % of an in situ processed, polymer-derived, ceramic phase constituted from Si-C-N have unusual friction-and-wear properties. They show negligible wear despite a coefficient of friction (COF) that approaches 0.7. This behavior is ascribed to the lamellar struct…
High-performance ultra-thin oxide layers are required for various next-generation electronic and optical devices. In particular, ultra-thin resistive switching (RS) oxide layers are expected to become fundamental building blocks of three-dimensional high-density non-volatile memory devices. Until now, special depositi…
Impact damage of laminated B 4 C ceramic samples was investigated using four types of aluminum sheets — without holes and with 25 4‐, 8‐, and 25‐mm‐diameter holes — at joining ratios of 100, 94, 76, and 45%. Four 1‐mm‐thick B 4 C ceramics plates were laminated using three aluminum sheets of the same type and joined at…
In the present work, the preparation of an organic-inorganic hybrid material in which tetrakis phenylporphyrin is immobilized on the surface of polyoxometalate (H3PMo12O40) is reported. This porphyrin-polyoxometalate hybrid material was characterized by FT-IR and UV-Vis spectroscopic methods. The photocatalytic activi…
The static strength of mechanically heterogeneous welded joints with a lack of fusion defect in the centre of the welded joint is calculated. The stress state of mechanically heterogeneous inclined butt-welded joints with a lack of fusion defect is investigated. A method is proposed for evaluating the static strength…
Zirconia ceramics are often considered in the nuclear industry for high temperature applications due to their radiation resistance, chemical inertness, high thermal stability and low thermal conductivity. However, wide application of zirconia ceramics is hindered by their degradation behavior in aqueous media. In this…
V prĂĄci je popsĂĄn pĹehled souÄasnĂŠho stavu vĂ˝zkumu mÄĹenĂ interakcĂ elektromagnetickĂ˝ch vln s rĹŻznĂ˝mi druhy materiĂĄlĹŻ, dĂĄle analĂ˝za moĹžnostĂ mÄĹenĂ interakcĂ vysokofrekvenÄnĂch vln (mikrovln) s materiĂĄly a vlastnĂ mÄĹenĂ interakce elektomagnetickĂŠho zĂĄĹenĂ s dielektrickĂ˝mi vzorky ve…
The performance of Double Convected Pom‐Pom (DCPP) model in predicting contraction flow was examined by means of particle image velocimetry (PIV) technique. Both the velocities at the centerline and the flow patterns were investigated experimentally and numerically for low density polyethylene (LDPE) and high density…
Abstract Particle shape is a critical parameter that plays an important role in self‐assembly, for example, in designing targeted complex structures with desired properties. Over the last decades, an unprecedented range of monodisperse nanoparticle systems with control over the shape of the particles have become avail…
Based on rigorous dynamical-theory calculations, we demonstrate the principle of an x-ray multiple-beam diffraction (MBD) scheme that overcomes the long-lasting difficulties of high-resolution in-plane diffraction from crystal surfaces. This scheme only utilizes symmetric reflection geometry with large incident angles…
The fast growth of technologies has driven the advancement of our society. It is often necessary to quickly grasp the linkage between different technologies in order to better understand the technical trend. The availability of huge volumes of granted patent documents provides a reasonable basis for analyzing the rela…
Principal component analyses (PCA) were conducted for skin spectral reflectance of a new skin colour database. Results for skin colours from different ethnic groups were analysed and reflectance re-construction based on first three components obtained by PCA were investigated. Significant differences in the derived pr…
The recent advances in thin-film thermoelectric (TE) materials have created opportunities for on-chip cooling and energy-harvesting with heat-fluxes >100W/cm2. However, it remains unclear how effective these materials are in the context of realistic microprocessor floorplan and workloads. Moreover, these TE materials…