Materials Literature
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Graphene is a promising electrode material for supercapacitor applications due to its unique properties. Interaction of electrolyte ions with graphene lattice sites is a crucial factor in ionic liquid electrolyte based supercapacitors. In an effort to increase the interaction of high viscous electrolyte with electrode…
High‐strength ZrC ceramics with relative density above 98% were prepared by reactive hot pressing of ZrC and Al at 1900°C. The reaction between ZrC and Al resulted in the formation of ZrC 1− x , Zr 3 Al 3 C 5 and Zr – Al compound such as AlZr 3 and Al – C – Zr . The intermediate product AlZr 3 below 1600°C and remaine…
Single-molecule fluorescence measurements of biological samples frequently suffer from background autofluorescence originating from fluorescent materials pre-existing in living samples, and from unstable photo-physical properties of fluorescent labeling molecules. In this study, we first describe our method of selecti…
Highly radiation-damaged or irradiated nanodiamonds (INDs) are a new type of nanomaterial developed recently as a potential photoacoustic (PA) contrast agent for deep-tissue imaging. This work characterized in detail the photophysical properties of these materials prepared by ion irradiation of natural diamond powders…
The purpose of this study was to determine the ability of superparamagnetic iron oxide (SPIO) nanoparticles to function as a long-term tracking label for multi-modal imaging of implanted engineered tissues containing muscle-derived progenitor cells using magnetic resonance imaging (MRI) and X-ray micro-computed tomogr…
Superionic materials are multi-component solids in which one sub-lattice exhibits high ionic conductivity within a fixed crystalline structure. This is typically associated with a structural phase transition occurring significantly above room temperature. Here, through combined temperature-resolved x-ray diffraction a…
ABSTRACT The effects of different silica loadings and elastomeric content on interfacial properties, morphology and mechanical properties of polypropylene/silica 96/4 composites modified with 5, 10, 15, and 20 vol % of poly(styrene‐ b ‐ethylene‐ co ‐butylene‐ b ‐styrene) SEBS added to total composite volume were inves…
Tantalum carbides are commonly processed by hot pressing, canned hot‐isostatic‐pressing, or spark plasma sintering because of their high melting temperatures and low diffusivities. This paper reports processing of dense ζ‐ Ta 4 C 3− x by reaction sintering of a Ta and TaC powder mixture ( C / Ta atomic ratio = 0.66).…
Rare earth (RE) doped materials have been widely exploited as the intriguing electronic configuration of RE ions offers diverse functionalities from optics to magnetism. However, the coupling of magnetism with photoluminescence (PL) in such materials has been rarely reported in spite of its fundamental significance. I…
The structure and tribotechnical properties of sintered Al-Sn alloys were studied. It was pointed that the sintering of pure metals powders allows save the skeleton structure of aluminium matrix at the enlarging concentration of tin up to 50% that twice higher its content in commercial alloys this system. It was estab…
This paper presents a finite element analysis procedure for solving time-periodic magnetic field problems, employing the fixed point method and the vector Jiles-Atherton (J-A) model. To increase the modeling accuracy, multiple sets of the J-A model parameters are used. The convergence performance of the fixed point it…
SiO4 tetrahedra in certain sodium silicophosphate glasses can be transformed into SiO6 octahedra that determine the macroscopic properties of silicophosphate glasses to a large extent. In this study, we develop the quantitative evolution rule of each network former. In addition, based on the underlying structure and t…
(1 − x ) Ba 0.5 Sr 0.5 TiO 3 ( BST )– x MgO composite ceramics have been prepared in situ by a citrate–nitrate combustion process, and their crystal structure and effective dielectric response have been investigated systematically. Results reveal that MgO particles homogeneously disperse in BST particles. Rietveld ref…
Bimetal oxide ZnO-MgO nanoparticles were synthesised by precipitation method at low temperature and characterised by analytical techniques such as XRD, SEM and FT-IR. In order to know the efficiency of uptake and release of anticancer drug, the adsorption and release of doxorubicin, on bimetal oxide nanoparticles was…
We report synthesis of a cerium-activated strontium pyrophosphate (Sr2 P2 O7 ) phosphor using a high-temperature combustion method. Samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), photoluminescence (PL) and thermoluminescence (TL). The XRD pattern reveals that Sr…
The optical properties of coupled graphene nanoflakes are investigated theoretically within the framework of Hartree–Fock based semiempirical methods, with the aim of unraveling the role of π–π interactions. Two different types of π-stacking are considered, obtained either by coupling two identical flakes with differe…
ABSTRACT Drawdown force, defined as the force needed to stretch a polymer melt uniaxially at capillary extrusion, is investigated using isotactic polypropylene. In this study, we focus on the effect of die geometry on the drawdown force. As similar to the swell ratio, which decreases with increasing die length, the dr…
Block copolymers composed of poly(3-hydroxyoctanoate) (PHO) and methoxy poly(ethylene glycol) (PEG) were synthesized to prepare paclitaxel-incorporated nanoparticle for antitumor drug delivery. In a (1)H-NMR study, chemical structures of PHO/PEG block copolymers were confirmed and their molecular weight (M.W.) was ana…
Autonomous healing of cracks using pre-embedded capsules containing healing agent is becoming a promising approach to restore the strength of damaged structures. In addition to the material properties, the size and volume fraction of capsules influence crack healing in the matrix. Understanding the crack and capsule i…
Electronic susceptibilities are a very popular tool to study electronic and magnetic properties of materials, both in experiment and theory. Unfortunately, the numerical evaluation of even the bare susceptibility, which depends on the computation of matrix elements and sums over energy bands, is very work intensive an…