Materials Literature
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Echo-contrast agent microbubbles in blood can sometimes penetrate a clot that is blocking bulk flow in the vessel. When ultrasound is applied for the purpose of sonothrombolysis, microbubbles can be forced by acoustic radiation force into the clot matrix. To monitor the extent of this penetration, a 20 MHz pulsed Dopp…
Dear colleagues, We are pleased to introduce you to this Special Issue of physica status solidi (a), focussed on fundamental and applied science and technology of diamond and nanodiamond materials. This special issue aims at providing a brief but hopefully broad overview of those topics that are today at the centre of…
Single crystals of K2Ta4O11(I), K(TaO2)2PO4(II) and K3Ta5O11(PO4)2(III) were synthesized by flux-aided method in the pseudo-quaternary system K2O-P2O5-Ta2O5-MoO3. Tight interrelation of their crystal structures has been found via X-ray diffraction study. Experimental solid-state band gap measurements revealed its semi…
Dielectric behavior (complex permittivity and loss) of iron-containing (5-20 wt.%) polymeric composite nanomaterials are investigated in the range from 2 to 18 GHz.
Abstract C15H13ClCuN4O9, monoclinic, P21/n (no. 14), a = 8.1493(3) Å, b = 11.4761(4) Å, c = 19,3483(6) Å, β = 97.7438(3)°, V=1793.05(11)Å3, Z=4,Rgt(F)=0.0459,wRref(F2)=0.1149, T = 296 K
Little is known about the potential behavior and ecotoxicity of nanoparticles to aquatic organisms. The cytotoxicity and immunotoxicity of NiO-Nanoparticles and Chlamydomonas reinhardtii. It shown that the mitochondrial activity was gradually reduced significantly at the different exposure concentrations for NiO nanop…
Based on generalized Lorenz-Mie theory and Ricatti-Bessel Derivation functions, a theoretical analysis of electromagnetic scattering of a plane wave by an isotropic sphere coated by double negative metamaterial (DNM) is investigated. The extraordinary scattering characteristic of an isotropic sphere coated by DNM is n…
The influence of modification by hydroxyapatite (HA) nano- and microparticles on tribotechnical properties of ultrahigh molecular weight polyethylene (UHMWPE) was investigated to develop polymer implants for endoprosthesis. It was shown that modification of UHMWPE by hydroxyapatite nanoparticles within range of 0.1–0.…
We present two different strategies for the future concept of vertical interconnection involving a highly resolved nanoscale wiring. The basic concept involves the lamination of a thin film with parallely oriented metallic nanowires (NWs) embedded inside a dielectric matrix. When it comes to this matrix, basically two…
To improve the techniques of molecular beam epitaxy, the electron bombardment evaporator for high temperature evaporation in ultra-high vacuum is designed, and then its performances, such as power-temperature relationship, stability of beam flux as well as molecular beam distribution, are tested by using Ag source. Th…
Magnetism Carbon coated iron nanoparticles were produced by DC carbon discharge method .The structure , size distribution , phase composition and magnetic properties of the particles were investigated using TEM , XRD and VSM. The result s show that the core of t he particles is iron , and the shell of the particles is…
The paper is devoted to the analysis of thermoelectric cooling phenomena in a p-n semiconductor structure. The formulation of an adequate self-consistent theoretical model describing the effect is presented. The role of the recombination rate as a new source of heat in linear approximation of the electric current was…
Occlusion of blood vessels using high-intensity focused ultrasound (HIFU) is a potential treatment for arteriovenous malformations and other neurovascular disorders. However, HIFU-induced vessel occlusion can cause vessel rupture resulting in hemorrhage. Possible rupture mechanisms include mechanical effects of acoust…
This paper describes the continuity of the development ultrasonic listening device that capable in capturing the ultrasonic sound produced by discharges in the insulation. The device is designed using the wideband amplifier that provides a wide bandwith range that covers from 10 Hz up to 100 kHz. The design of the dev…
To improve the ability of 10kV distribution lines for lightning protection and management, it is necessary to remodify ways of lightning protection specifically for the issues of differences in the distribution lines. In this study an integrated solution for lightning protection was investigated, which is adopted the…
Abstract Crystallization of highly undercooled materials either from the melt during cooling or from an amorphous phase during heating can yield novel phases with useful properties, but a reliable control of phase selection has been elusive. In bulk volumes fluxing is a common method to promote high undercooling due t…
Metal magnetic memory (MMM) technology, based on magnetic-mechanical effect, is a new nondestructive testing. In order to study MMM signal characteristics of welded joint fatigue cumulative damage, Steel 20 welded plate specimens were tested under multi-cyclic fatigue loading. The average value of fatigue loading is 3…
In this Paper the polarization and depolarization behavior of oil impregnated paper by a DC voltage and its influence on the breakdown voltage by reversed polarity is presented. As Power transformers for HVDC applications are tested with a polarity reversal test before commissioning the insulation system is stressed w…
We report the growth of hexagonal Zn0.58Mg0.42O thin films on a c-plane sapphire substrate via pulsed laser deposition using Zn0.7Mg0.3O/Zn0.9Mg0.1O/ZnO stacked buffer layers of various thicknesses. The effects of the stacked buffer layer thickness on the structural and optical properties were investigated by X-ray di…
In this paper, iodine doped amorphous carbon thin films with varying the doping time were prepared onto glass and n-type silicon substrates by Thermal CVD technique. The optical and electrical properties of iodine doped amorphous carbon thin films were characterized by using UV-VIS-NIR spectroscopy and current-voltage…