Materials Literature
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In this paper, we model and characterize the thermomechanical behavior of SMA springs based on Brinson's constitutive model of SMAs. The model developed in this paper can be used to compute the recovery length of SMA springs. We used the model to develop a temperature feedback position controller to control the joint…
A comparative study is performed on Hypericum perforatum ( H. perforatum ) and doxorubicin (Dox) anticancer agents. Double emulsion and sonication techniques were used to enhance drug loading efficiency in poly(lactic‐co‐glycolic acid) (PLGA) nanoparticles (NPs). To distinguish the efficiency of the double emulsion me…
The photoluminescence properties of cadmium-selenide (CdSe) quantum dots with an average size of ∼3 nm, embedded in a liquid-crystal polymer matrix are studied. It was found that an increase in the quantum-dot concentration results in modification of the intrinsic (exciton) photoluminescence spectrum in the range 500–…
Type-VIII clathrate Ba 8 Ga 16 Sn 30 is a promising thermoelectric material in the 400–600 K range. We report on the effects of Ge substitution for Sn on both crystal growth and thermoelectric properties. In a series of samples prepared from the initial composition of Ba 8 Ga 40 Sn 30− X Ge X (0 ⩽ X ⩽ 6), the size of…
The tarnishing of silver artefacts surface, that are exposed in museums or kept in storage, is a reason that makes them inappropriate for displaying. In this work the conditions for tarnish removal (horn silver and silver sulphide) from silver artefacts surfaces by an electrochemical galvanic cell of silver/aluminium…
This paper investigates the effectiveness of the time domain parallelization in magnetic field analyses of practical electric machines. We propose an efficient procedure to parallelize transient as well as steady-state analyses by generalizing the formulation of the parallel time-periodic finite element method. The pr…
Pure and Ni-doped ZnFe2O4 nanoparticles, Zn1-xNixFe2O4 (x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5) were synthesized by microwave combustion method (MCM). The structural, morphological and magnetic properties of the products were determined by X-ray diffraction (XRD), high resolution scanning electron microscopy (HR-SEM) and…
Two-dimensional (2D) finite element models of electrical machines are known to over predict iron losses when modeling systems excited using pulse width modulation. This digest presents the integration of a simple first order 1D approximation of the eddy current distribution within the lamination into a 2D finite eleme…
The superlattice film with the periodical thin film layers of Sb 2 Te 3 /GeTe used as a phase change memory was studied for deposition in the crystal phase. We successfully fabricated the superlattice structure with the sputtering temperature of 200 °C. Moreover, the pillar structure with the size of 70 nm was dry-etc…
The microstructure, composition and elemental depth profile of micro-arc oxidation film was analyzed by means of Scanning Electron Microscope (SEM), X-ray diffraction (XRD) and Energy Disperse Spectroscopy (EDS). The film is composed of an outer loose layer and an inner dense layer, a few circular pores present on the…
The crystal structure of halloysite, despite being one of the most commonly occurring clay minerals on the Earth’s surface, remains elusive. This paper reports on a multi-methodological study to shed more light on the atomic arrangement of halloysite from Olkhon Island, Lake Baikal, Russia, which has a prismatic morph…
The electron probe microanalyzer (EPMA) provides quantitative analysis for nearly all chemical elements with a spatial resolution of analysis about ~1 μm, which is relevant to microstructures in a wide variety of materials and mineral specimens. Recent implementation of the Schottky emitter field-emission gun (FEG) el…
The purpose of the present work is to show the validation of a new model to simulate the physical phenomenon of partial discharge (PD) produced in air voids inside insulating epoxy resin. The model has been developed on the basis of a new approach that combines the known circuit model of three capacitors with a model…
Experimental results on the synthesis of luminescent YVO 4 : Eu nanoparticles with the method of metalopolymer gel decomposition are presented. The sizes of the coherent scattering regions according to the X-ray diffraction data range from 25 to 40 nm and increase with the increase of the annealing temperature from 80…
We have fabricated Rb-intercalated bilayer graphene on 6H-SiC(0001) and performed low-energy electron diffraction (LEED) and high-resolution angle-resolved photoemission spectroscopy (ARPES). In LEED experiments, we observed a 2 $\ifmmode\times\else\texttimes\fi{}$ 2 pattern identical to that of the bulk graphite inte…
The present review summarizes and analyzes recent advances in the field of medical and biological applications of detonation nanodiamond and, on this basis, considers most promising ways of creation of anticancer and antimicrobial drugs, diagnostic agents, and nanocompositions for orthopedic surgery. In addition, prog…
We theoretically investigate the dielectric properties of dimer Mott insulators. We adopt the two-dimensional quarter-filled extended Hubbard model for $\ensuremath{\kappa}$-(BEDT-TTF)${}_{2}$$X$ that includes the coupling with the dimer lattice modes, and numerically calculate the ground state for the bond-length-alt…
We detail under light and scanning electron microscopy the type materials of three poorly known diatom species first described by Hustedt from aerial habitats in Germany. Navicula parsura Hustedt (synonym: N. obscura Hustedt), N. obsoleta Hustedt, and N. evanida Hustedt type materials were observed and compared with p…
The purpose of this highlight is to demonstrate the importance of the surface functionalization of nanoparticles toward the design of high-tech (nano)materials. These (nano)materials are “nano-tools” for the already established interdisciplinary research fields of nanoscience and nanotechnology, which find an enormous…
Using medium‐frequency high‐power transformers leads to significant decrease in size and volume of high‐power converters in different applications such as offshore wind farms and electric traction. However, increasing the operating frequency leads to several challenges such as increase in the core loss. Consequently,…