Materials Literature
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The theory of inverse magneto-mechanical effect in cubic crystals has been developed. The proposed model involves changes of the magnetostrictive material magnetization in the external polarizing magnetic field when creating a compression-tension or shear deformation. The magnetic field direction is shown to significa…
This paper presents a dynamic model of dc pollution flashover using analytical relationship of arc parameter (A and N). The model takes account the physical and electrical characteristics of the discharge and the pollution layer. Using the impedance criterion for the discharge propagation and the energy balance criter…
Abstract Laser-assisted device alteration (LADA) is an established technique used to identify critical speed paths in integrated circuits. LADA can reveal the physical location of a speed path, but not the timing of the speed path. This paper describes the root cause analysis benefits of 1064nm time resolved LADA (TR-…
As a new type of smart material, the Dielectric Electro Active Polymer (DEAP) is introduced in terms of configuration, working principle and potential applications. The design of an autonomous high voltage driving system for DEAP actuator is investigated. The system configuration and the design methodology of a high v…
We have calculated vibronic spectra of the first electronic n π* transitions of pyridine and pyrimidine in the isolated state using the DFT method in the Franck-Condon approximation. Vibrational spectra for the ground and excited states have been calculated in the anharmonic approximation, which allowed us to refine t…
The distribution of conductivity is studied in nanocristalline lithium niobate thin films via electrostatic force microscopy. Conductivity images are obtained at different bias voltages. Grain boundaries are shown to play a predominant role in the conductivity in lithium niobate thin films.
In order to understand the relationship between sequences and biological functions of RGD-containing wild silkworm silk fibroin, it is important to purify the basic RGD-containing motif in large quantities. In this study, a gene monomer encoding RGD-contained motif GSGAGGRGDGGYGSGSS (-RGD-) derived from Antheraea pern…
We demonstrate, for the first time, selective gas sensing using MoS2bilayer Thin Film Transistors (TFTs). The TFTs were fabricated using exfoliation from bulk crystals and transferring onto Si/SiO2substrates. For control purposes, we used the same TFTs but with the surface covered by a 10 nm Al2O3layer. The extracted…
Thin films of NiFe2O4were fabricated on MgO (001) and MgAl2O4(MAO) (001) substrates by reactive radio frequency magnetron sputtering and were evaluated with regards to their electrical and magnetic properties. A saturation magnetization of 285 emu/cm3was obtained with a 30 nm thick film grown on an MAO substrate at an…
Magnetostrictive Fe62Co19Ga19films deposited on Si(100) substrates were used as test samples in this paper: the length (L) is parallel to the x-axis and the width (w) parallel to the y-axis. The conventional magnetostriction measurement includes measuring the free end deflection (Δz) of the cantilevered film-substrate…
The thickness distributions of epitaxial layers over the substrate area are experimentally and theoretically studied for deposition from a molecular beam formed by a sublimation source in vacuum. The calculated data agree well with the experimental results for the molecular-beam epitaxy of silicon.
This paper presents a calorimetric flow sensor that is capable of determining the thermal conductivity of flowing gases. The measuring principle relies on using AC heat generation at 200 Hz in order to confine the oscillatory thermal boundary layer within a very small distance from the surface, where, due to the non-s…
The write field requirements in heat-assisted magnetic recording (HAMR) using FePt media are studied using an atomistic model. Langevin dynamics simulations of laser-induced thermal demagnetization and magnetization recovery are performed on a single L1o-ordered FePt grain. We show that the minimum heat temperature fo…
To increase the electrical resistance of Nd-Fe-B magnets, CaF2were used to fabricate Nd-Fe-B/CaF2composite permanent magnets by hot-pressing and hot-deformation techniques. The influence of CaF2on the microstructures, electrical resistances, and magnetic properties of the Nd-Fe-B/CaF2composite magnets has been investi…
Fabrication of a thermotropic ferronematic colloid is reported, consisting of a 1% concentration of magnetite nanorods dispersed in a commercially obtained liquid crystal (LC). To produce the nanorods, solvothermal synthesis was utilized by adding Fe(CO)5to a reaction solution of hexadecylamine and oleic acid in n-oct…
We propose a method to generate vortex beam with sidelobe suppression by adding an axicon before the spiral phase plate (SPP). In this paper, the far-field diffraction model of the SPP is theoretically analyzed in detail. The numerical simulation results show that the quality of the generated beam which carries the or…
In this article, a novel plasmonic grating sensor platform was developed and tested for feasibility in sensor applications using a “lights-on” fluorescence based DNA sensor. The sensor platform combined the fluorescence enhancement of a grating-based plasmonic platform with the electric field intensifying effects of n…
We report a large magnetoelectric (ME) effect in FeCuNbSiB/FeGa/PZT multilayer composite at low optimum bias magnetic field (Hdc). Due to the great differences in the magnetic permeability and coercivity between FeCuNbSiB foils and FeGa alloys, the strong magnetization gradients are achieved, which induce an additiona…
Fashion is something beyond a normal approach with no limits to the permutations that one can think in terms of designing. Fashion, which represents the innovations of designers, brings forth revolution to the fashion world. The development of new technologies that are then applied to fashion offer opportunities for t…
Iron-Gallium alloy (Galfenol) is a magnetostrictive material (λsat~ 400 ppm) with potential for robust transduction. In addition, Galfenol is auxetic in thedirection with Poisson's ratio values of as low as -0.7. In recent years, this phenomenon has been examined with several experimental protocols. The negative Poiss…