Materials Literature
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A plant for growing single crystals from a melt-solution by the Kyropoulos method is described. The plant has a two-zone growth furnace, crystal holder movement and rotation mechanisms, and a control system based on an I-7188EG controller with an ISaGRAF built-in target system. The upper and lower zones of the furnace…
The properties of perovskite type ABO 3 lithium-ion conducting oxides based on lanthanum lithium titanate (La,Li)TiO 3 , lanthanum lithium niobate and tantalate, and Li 5 La 3 M 2 O 12 (M = Nb, Ta) garnets were considered. Approaches to modification of the properties of these oxides, as well as the charge-compensation…
Abstract Thin PMMA films have been studied extensively for their potential applications as membranes, microlithography and optical applications. PMMA has been recently use like gate dielectric film in OTFT. In this paper we present the structural and electrical characteristics of isotactic PMMA (i‐PMMA) thin films pre…
The objective of this paper is to study the discharge phenomenon for a point-plane air interval using an original fuzzy logic system. Firstly, a physical model based on streamer theory with consideration of the space charge fields due to electrons and positive ions is proposed. To test this model we have calculated th…
This work deals with a parametric identification using the least square method based on the output error. An appropriate particle swarm optimization algorithm is applied as a technique to minimize the objective function in order to obtain simultaneously the electrical and the mechanical parameters. The validation and…
When microbubble contrast agents are driven by ultrasound, the transport of drugs and particles across cell membranes and blood vessel walls is enhanced. While a wide range of acoustic parameters enhance delivery, the acoustic parameters that maximize delivery while simultaneously minimizing biological effects have no…
Microbubbles were isolated by size using differential centrifugation, and the effect of microbubble size on the acoustics and kinetics of contrast ultrasound imaging was measured in the mouse kidney. Microbubbles in the 1-2 ¿m diameter size range comprise over 90% of the microbubbles in freshly generated and commercia…
This paper aims at designing an RF tag planar antenna around 2.4 GHz enabling a frequency beam steering in the plane of the substrate. The structure is based on a leaky-wave antenna topology using a transmission line with series (capacitive) gaps and CSRRs periodically loading a host microstrip line. Its behaviour is…
Currently, the design and development of novel magnetic materials with optimized properties is of relevance to study new phenomena and to use them for multifunctional applications of sensor technologies and magnetoelectronic devices. In this letter, we present a detailed investigation of giant magnetoimpedance (GMI) e…
In this work the sensing of Nd2O2CO3-based chemoresistive CO2 sensor was investigated combining DRIFT and DC-resistance measurements. Besides the already reported effect of CO2 exposure, we found that exposure to CO determines comparable effects and that the presence of oxygen in the background is not important. The h…
A series of Zn ion-doped pentaerythritol tetranitrate (PETN) nanoislands in the form of thin films were prepared on Si substrates using spin coating. The effect of Zn concentrations on the sublimation energy was investigated by atomic force microscopy (AFM). The pure and Zn-doped nanoislands are imaged by AFM in conta…
The mobility of atoms and cyclic or spherical guest molecules inside and around β-cyclodextrin (β-CD) is analysed, along with the influence of temperature on inclusion complex formation, by means of a molecular dynamics simulation at constant temperature. The intermolecular energy is modelled by a Lennard-Jones potent…
The new concept of surface texturing or surface patterning on austenitic stainless steel by plasma assisted diffusion treatment is presented in this paper. It allows the creation of uniform micro or nano relief with regularly shaped asperities or depressions. Plasma assisted diffusion treatments are based on the diffu…
Boost phase-shifted (PS) full-bridge (FB) converter is a typical converter in high voltage application. Due to the requirement of high voltage insulator, its transformer is often designed with more leakage inductor and inter-layer capacitor. Considering leakage inductor and inter-layer capacitor's effect, accurate mod…
Metal ion implantation is shown here as an effective technique to fabricate highly compliant electrodes at room temperature on polymer substrates. By implanting 5 keV gold ions in polydimethylsiloxane we have fabricated micron-scale electrodes that conduct at 175% strain, have low surface resistance (< 1 kΩ/square) an…
The mechanism of deformation localization and formation of shear microbands under plastic deformation of submicrocrystalline and nanocrystalline materials is theoretically discussed in the framework of the dislocation-kinetic approach. An equation of evolution of the density and self-organization of dislocations in th…
The dependence of X-ray intensity on the pressure and type of ambient gas was investigated for LiNbO(3) single crystals polarized in the c-axis direction at pressures of approximately 1 to 30 Pa. Ionization of surrounding gas molecules by the electric field generated by the crystal led to the production of both positi…
Eutectic TiB 2 -TiC composite ceramics were prepared by combustion synthesis under high gravity. XRD, SEM, and EDS results showed that TiB 2 -TiC composites were mainly composed of the eutectic microstructures of a TiC matrix in which a large number of fine TiB 2 platelet grains were dispersed uniformly; meanwhile, at…
The energy spectra of recoil nuclei and α particles produced in interactions of fast (8.0–14.1 MeV) neutrons with diamond were simulated. Differential cross sections for five channels (nuclear reactions) of elastic and inelastic collisions were used. It was shown that a substantial distortion of the simulated energy s…
Abstract This work presents the plasma copolymerization of Ethylenglycol and Allylamine with the purpose to obtain thin films of biocompatible random polymers with NH and OH chemical groups. The synthesis used electrical glow discharges with mixtures of the monomers at 13.56 MHz, 10−1 mbar and power between 40 and 1…