Materials Literature
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Iron-doped TiO2 catalysts were prepared by impregnation in order to study their photocatalytic activity in the treatment of wastewater from the textile industry. Characterization of the catalysts before and after reaction was performed using techniques including total surface area measurement, X-Ray diffraction and el…
In the last few years, the combination of laser irradiation with atmospheric pressure plasmas, also referred to as laser–plasma hybrid technology, turned out to be a powerful technique for different materials processing tasks. This chapter gives an overview on this novel approach. Two methods, simultaneous and sequent…
Self-supporting membranes built entirely of carbon nanotubes have been prepared by wet methods and characterized by Raman spectroscopy. The membranes are used as supports for the electrodeposition of Pt nanoparticles without the use of additional additives and/or stabilizers. The Pt precursor is an ad hoc synthesized…
Remarkable electrical properties of carbon nanotubes (CNT) have lead to increased interest in studying CNT- based devices. Many of current researches are devoted to using all kinds of carbon nanomaterials in the con- struction of sensory elements. One of the most common applications is the development of high performa…
Various interacting lattice path models of polymer collapse in two dimensions demonstrate different critical behaviours. This difference has been without a clear explanation. The collapse transition has been variously seen to be in the Duplantier–Saleur θ -point university class (specific heat cusp), the interacting t…
A new solid-state composite was prepared by using fly ash as host matrix and carbon shoots of camphor as dispersoid, which are abundantly available and cheap. The composite was characterized by using different techniques. For conductivity and dielectric measurements, we used complex impedance spectroscopy. Maximum con…
Cartilage is one of the most important tissues in mammalian growth and is classified into three types: hyaline, fibro, and elastic. To illustrate its potential as a clinical diagnostic tool, nonlinear optical microscopy (NLOM) was applied to simultaneously investigate images and spectra from three different types of r…
Nanoparticle based drug products are of growing interest in the field of pharmaceutics. Enhancing saturation solubility and dissolution velocity by preparing drug nanoparticles correlates with faster absorption rates. The faster absorption rates can correlate into better bioavailability, reduction in fed and fast effe…
A series of superlattices consisting of 15 bilayers of ferromagnetic La0.7Sr0.3MnO3 (LSMO) and SrRuO3 (SRO) were grown with either stacking order on (1 1 1) oriented SrTiO3 (STO) substrates using the pulsed laser deposition technique. The Raman spectra of these superlattices show the existence of rhombohedral and orth…
Abstract Al x Ga1− x N layers with high aluminum content of x ∼ 0.68–0.73 were grown in an 11 × 2-in. AIX 2400 G3 HT planetary reactor by metal–organic vapor phase epitaxy. Growth trends are analyzed by reaction-transport modeling in a wide range of growth conditions. Gas-phase nucleation resulting in both Al and Ga c…
Techniques have been developed for making a unique type of piezoelectric thick-film strain sensor in the form of a ‘piezoelectric adhesive’ to be embedded into a bonded joint. Lead zirconate titanate (PZT) powder is used as the active ingredient of the piezoelectric composite and epoxy resin as the matrix. The sensors…
The first radical end-coupling synthesis of polydimethylsiloxane (PDMS)−γ-cyclodextrins (γ-CDs) based polyrotaxane is reported. Conversely to usual chemical way, the radical process leads to fast both controlled size and structure with minimal side reaction while exhibiting very high conversion rate (w/w, 80%). Pure P…
The abstract of the second part of this paper is included in the abstract of part 1.
Density functional theory (DFT) and time-dependent density functional theory (TDDFT) were used to study optical and electrochemical properties of a new series of dye sensitizers for use in dye-sensitized solar cells (DSSCs). The dyes include triphenylamine (TPA) unit as an electron donor and cyanoacrylic acid moiety a…
The elastic, electronic, and optical properties of Cu 3 MTe 4 (M = Nb, Ta) are investigated for the first time using the density-functional formalism. The optimized crystal structure is obtained and the lattice parameters are compared with available experimental data. Different elastic moduli are calculated. The Born…
采用机械球磨混粉和真空烧结相结合的方法制备了Fe-Cu-Mo-C合金,研究了不同烧结温度对粉末冶金Fe-Cu-Mo-C合金材料的显微组织、密度、抗拉强度和摩擦磨损性能的影响。结果表明：随着烧结温度由1 000℃升高到1 100℃,Fe-Cu-Mo-C合金烧结体组织孔隙数量减少、孔隙尺寸明显降低;当烧结温度提高到1 150℃时,烧结体组织中孔隙尺寸增大。随着烧结温度升高,烧结体的密度、硬度、抗拉强度和伸长率先增大后减小,磨损量先降低后升高。最佳烧结温度为1 100℃,此时烧结体的密度为6.90 g/cm3,抗拉强度为319 MPa,洛氏硬度为34.7 HRC,磨损量为0.087 g。
Abstract In this paper a solution for the one-dimensional steady state Multilayer Multigroup Neutron Diffusion Equation in cartesian geometry by Fictitious Borders Power Method and a perturbative analysis of this solution is presented. For each new iteration of the power method, the neutron flux is reconstructed by po…
Thermodynamic properties of sodium gluconate (SG) aqueous solution have been measured over the 303.15–343.15 K temperature range including solubility, density, and viscosity. For proper crystallization of SG, the kinetics of evaporative crystallization with spontaneous nucleation was subsequently investigated in a sem…
Las fibras vegetales son estructuras celulares conformadas por diferentes polimeros de celulosa, hemicelulosa, pectina y lignina, importantes a nivel mundial en el proceso textil, alimentario e industrial. Esta revision recopila extensos estudios que se han realizado en torno al desarrollo de las fibras, clasificacion…
We measure magnetization and structural dynamics in two intercalant-ordered transition metal dichalcogenides: Fe0.25TaS2 and Mn0.25TaS2. The structurally equivalent materials allow us to probe the effect of orbital angular momentum which is active in Fe0.25TaS2 and absent in Mn0.25TaS2. Interestingly, we find that the…