Materials Literature
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Phase formation of materials depends on annealing temperature of materials. In this research, the substitution of Al with Zn to produce novel Al1.9Zn0.1O3 nanomaterials was done viaa combustion method. The effect of temperature on the phase formation of this material was investigated. The structural and morphological…
Porous alumina films are widely used as templates for fabricating one-dimensional (1-D) nanostructures such as nanowires or nanotubes. Using a two-step anodisation process, we have successfully optimized the growth conditions for fabricating highly ordered porous alumina films with pore diameters ranging from 20 to 15…
ADVERTISEMENT RETURN TO ISSUEPREVCorrespondenceNEXTReply to “Comments on ‘Hollow Carbon Fibers Derived From Natural Cotton as Effective Sorbents for Oil Spill Cleanup’”Bin Wang*†, Karthikeyan Rengasamy†, Xiao-Ying Lu†, Jin Xuan†‡, and Michael K.H. Leung*†View Author Information† Ability R&D Energy Research Center, Sch…
A malária é uma parasitose mortal que anualmente causa milhões de mortes em países tropicais e sub-tropicais.Ainda não existe uma vacina clinicamente disponível e as populações parasitas apresentam resistência contra quase todos os antimaláricos disponíveis.O metabolismo de vitaminas já é um alvo terapêutico consagrad…
The aim of this Letter is to characterize the flow regimes of suspensions of finite-size solid particles in a viscous fluid at finite inertia. We explore the system behavior as function of the particle volume fraction and the Reynolds number (the ratio of flow and particle inertia to viscous forces). Unlike single pha…
We study closed dense collections of hard spheres that collide inelastically with constant coefficient of normal restitution. We find inhomogeneous states (IS) where the density profile is spatially non-uniform but constant in time. The states are exact solutions of non-linear partial differential equations that descr…
The vortex dynamics of uniaxial anisotropic superconductors with arbitrary angles between the magnetic field, the applied current and the anisotropy axis is theoretically studied, by focusing on the models for electrical transport experiments in the linear regime. The vortex parameters, such as the viscous drag, the v…
We report in this paper the atomic level imaging in the polycrystalline film of titanium nitride. The crystalline boundaries are resolved at several places on the film surface, and the atomic positions are clearly seen with different orientations. We also observed presence of electronic charge density modulations, wit…
Introduction The rapid development of research on plasmonics in recent years has led to numerous interesting applications, and many plasmonic nanostructures have been designed and fabricated to achieve novel functionalities and/or better performance. For example, optical antennas are used for biochemical sensing [1–4]…
Stability of welding processes is fundamental to accomplish weld beads with good quality. Such stability can be defined by the regularity of metal transfer, as well as spattering generation and final bead quality. During short-circuit transfer, the process stability is straight affected by periodic arc extinction, whi…
Environmental stress cracking (ESC) is one of the main, and probably the most common, failure mechanisms involved in polymer fractures. This type of failure is critically important as it occurs suddenly, without any visible pre-fracture deformation. Such failure can be catastrophic and costly in cases where structural…
We report $^{139}$La nuclear magnetic resonance (NMR) measurements on La$_{2-x}$Sr$_x$CuO$_4$ ($0.07\leq x \leq 0.15$) and La$_{2-x}$Ba$_x$CuO$_4$ ($x=1/8$) single crystals, focusing on the spin freezing observed in 1/8-doped lanthanum cuprates. Charge stripe order seems to induce the inhomogeneous slowing down of spi…
The purpose of thesis is the Design of electronic conducting polymer based microactuators by microsystem process. First, the objective will be the synthesis of Interpenetrating Polymers Networks (IPNs) POE/PTHF and POE/NBR, aiming a decrease of the final thickness (with PEDOT) until 5 – 10 µm. Then, we proceed with th…
The aim of this dissertation was to develop a novel medical tampon for alternative gynaecological treatment using chitosan nanoparticles as an antimicrobial agent or as a drug delivery system. For this purpose viscose tampon band was used and functionalized with chitosan and trimethyl chitosan nanoparticles. A compreh…
This paper outlines an energy-minimization finite-element approach to the computational modeling of equilibrium configurations for nematic liquid crystals under free elastic effects. The method targets minimization of the system free energy based on the Frank-Oseen free-energy model. Solutions to the intermediate disc…
ABSTRAK\nRancang Bangun Mesin Las Titik Menggunakan Timer Omron Tipe H3BA-8\nKhalis Adibi\n The rapid development of technology that is happening right now, requires a\nproducer to prioritize good quality and in accordance with standards in producing\na product, both in terms of strength, safety and durability. Beside…
Mg-doped CaCu3Ti4O12 (CCTO) systems were prepared by solid state reaction using raw materials of CaCO3, CuO, TiO2 and MgO. The samples were calcined at 900°C for 12 hours and sintered at 1030°C for 10 hours. Single phase CCTO formed after sintering process. It was found that dielectric constant and dielectric loss of…
The oxidation of captopril by hexacynoferrate(III) in hydrochloric acid and 50% acetic acid-water(v/v) at a constant ionic strength (I = 3.10 mol dm -3 ) has been studied spectrophometrically at 25 °C. The reactions are initiated by mixing previously thermostated solutions of hexacyanoferrate(III) and captopril contai…
Organic-inorganic hybrid photovoltaic systems, for instance conjugated polymers blended with inorganic single crystals, thin films, or functionalized nanostructures (nanoparticles, nanorods or quantum dots) [1-2], offer great flexibility for designing novel solar cells with high power conversion efficiency
Aluminium Oxide (Al2O3) thin films have been widely used in many kinds of applications due to their excellent properties such as good mechanical strength, high abrasive and insulating characteristics. In this work, Al2O3 thin films are deposited on silicon (100) substrates using pulsed laser deposition (PLD). The depo…