Materials Literature
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An accurate X-ray diffraction study of Sr 3 TaGa 3 Si 2 O 14 (STGS) crystal ( a = 8.3023(10) Å, c = 5.0853(2) Å, sp. gr. P 321, Z = 1, R/wR = 0.59/0.52%, 4004 independent reflections) is performed. The use of two independent data sets obtained on diffractometers with point and 2D detectors made it possible to determin…
The band offset at the Cu 2 O/ZnO heterojunction was estimated both experimentally and theoretically following the procedure of core-level spectroscopy. The heterojunction was fabricated by electrochemical deposition, and the band offset was determined by X-ray photoelectron spectroscopy. For the theoretical calculati…
The synthesis route at low temperature for Ce-doped yttrium aluminium garnet (YAG:Ce) phosphor is described. Its photoluminescence efficiency and quenching temperature dependence characteristics are found to be comparable to the imported one. YAG:Ce shows least thermal quenching among the several blue LED phosphors [C…
This paper describes leading-edge research to explore and demonstrate new and unique nanoscale magnetic composites for high-frequency RF applications. Passivated cobalt nanoparticles were chemically synthesized and dispersed in epoxy to fabricate nanocomposite thick films. The high permeability comes from enhanced cou…
Precise modeling of PMSM needs considering the nonlinear characteristics of the hard and soft magnetic materials used in the machine. Therefore nonlinear machine models with time-variant parameters are used. Usually saturation is modeled in the field oriented coordinates assuming that the d-axis flux affects the q-axi…
Microbubbles have the potential to be used in many applications in different fields, especially in food, biomedical, and environmental sciences. However, to produce microbubbles with relatively long-term stability is difficult as they are inherently unstable entities. Hydrophobins are naturally occurring proteins that…
In this paper, first the fundamental concept of nano-optical biosensing is studied. Since Raman scattered signal is very weak to be recognized by current measuring equipments, the signal must be amplified. SPR and LSPR are utilized to enhance the incident field of the target molecules, to improve the sensitivity of th…
Nanofiber ACFs composed of adhesive resins, conductive particles, and nanofibers were demonstrated for ultra fine pitch COF packages. PAN nanofibers and PAN nanofiber containing conductive particles inside the fibers were successfully produced using electrospinning methods. The effects of nanofiber thickness and struc…
Textured high-Curie-point lead-free piezoelectric ceramics, CaBi 2 Nb 2 O 9 (CBN), were prepared by the tape casting method. Highly textured ceramics with a single phase and 95% Lotgering factor were obtained by the templated grain growth (TGG) technique. The textured CBN ceramics had a higher piezoelectric constant (…
In this paper, a detailed description of equipment is given, specially designed to characterize the response of non-spherical colloids to external fields. To characterize slow structural changes on a large length scale we developed an image correlation method, fast dynamics on the colloidal-particle level is probed by…
The working principle of dry micro-electro-discharge machining of vertically aligned carbon-nanotube forests is investigated by evaluating the effect of oxygen on the process. The machining experiments with controlled oxygen/nitrogen ratios indicate a correlation between the peak current of discharge pulses and the ox…
A novel approach of maximum power point tracking (MPPT) control method for thermoelectric generator (TEG) is reported in this paper. The maximum power point tracking is achieved by using impedance matching principle. Unlike the existing MPPT methods, the proposed implementation does not require any voltage and current…
Using the tellurium(IV) complex compounds as an example, we study the interrelation between the geometric structure and spectral luminescence properties. We find that, in the series of compounds of Te(IV), which are characterized by the island octahedral coordination of Te(IV) ions, the luminescence intensity depends…
Compared with traditional in-vitro cell culture materials, three-dimensional nanofibrous scaffolds provide a superior environment for promoting cell functions. Since nanofibrous scaffolds have nanometer pore sizes, cells are unable to penetrate on their own, so must be incorporated into the scaffold during fabrication…
A step-by-step consideration of charge transfer in the molecule-single-layer graphene-SiC substrate system is presented. At the first step, a simple model of the density of states of a single graphene monolayer adsorbed on silicon carbide (the graphene-SiC system) is suggested, which allows the calculation of the corr…
The potential of single-walled carbon nanotubes as nanosensors in detection of noble gases via a vibration analysis is investigated using molecular dynamics simulations. An index based on frequency shifts of the nanotubes in an environment of noble gas atoms is defined and examined to measure the sensitivity of the se…
In a binary mixture system of ferroelectric and antiferroelectric liquid crystals whose major component shows an unusual reversed phase sequence of , a new phase with ferrielectric order of five layers has been discovered by the electric field-induced birefringence (EFIB) measurements. The EFIB was measured using a ph…
The focus of this work is the modeling and simulation of the initial “stable jet” phase seen during the electrospinning process. The basis of the modeling is the bead-spring approach first proposed by Reneker et al. [J. Appl. Phys. 87, p. 4531 (2000)], who used this methodology to predominantly simulate the bending in…
In this paper, we study the relationship between nanoparticles’ structure/composition and the chemical nature of the molecules to be identified in surface enhanced Raman scattering (SERS) spectroscopy. Three types of nanoparticles (NPs) were synthesized, including Ag, Au, and silver coated by gold (Ag@Au), in order to…
A microstructural model of a ceramic cutting plate is developed. It permits the derivation of a calculation scheme for a mathematical model that includes the density, the elastic modulus, the thermal conductivity, the specific heat, the linear expansion coefficient, and Poisson’s ratio.