Materials Literature
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We have developed light irradiation and applied voltage history sensors using amorphous In-Ga-Zn-O (oc-IGZO) thin-film transistor (TFTs) exposed to ozone annealing and fabricated under high oxygen pressure. These a-IGZO TFTs have an interesting property; the Ids-Vgs characteristic shifts positively and becomes steep w…
High temperature alloy is the key hot end parts' material, which is often used in the modern aircraft, spacecraft and the rocket engines, as well as naval vessels and industry gas turbine. And it's also used in the nuclear reactor, chemical equipment, coal conversion technologies etc. as the very important high temper…
Cover: Rice husk, a major waste byproduct, is powdered and incorporated into a polymeric resin to produce medium density fiberboard (MDF) (similar to wood agglomerate) with good properties for use as a building construction material. Further information can be found in the article by S. Vargas,* J. R. Rodriquez, H. E.…
We demonstrate the simultaneous growth of multiple optically functional crystalline structures through a complex implantation and diffusion process. This includes ZnTe, ZnO and as-yet undefined silica crystallites doped with Er3+or Tm3+which are each characterized optically and structurally.
Terahertz (THz) waves have the potential to improve a wide range of devices in the space, defense and semiconductor industries as well as offering the possibility of investigating various molecules of interest in biology, medicine, art etc. For this reason, THz sources, detectors and passive linear components have gre…
A room-temperature structural phase diagram for the spinel Co3-x Mn x O4 (0 ≤ x ≤ 3) solid solution system was examined to study the cubic-tetragonal phase transition. The temperaturedependent magnetization was measured to identify the ferrimagnetic ordering at temperatures below T C An enhanced magneto-capacitance ef…
In this paper, we present a novel tunable phase shifter at 2.4GHz, based on composited right/left-handed (CRLH) transmission line. The phase shifter is designed by adopting LC loaded lines with varactor diodes. The corresponding DC bias circuit is also designed. By changing the bias voltage of the varactor diodes, the…
Electron microscopy studies of nanoparticles in pyroboroncarbon reveal the pentagonal symmetry of their structure. The nanoparticles consisting of crystal individuals separated by twinning boundaries have icosahedral faceting (habit). As a result of the analysis of experimental high-resolution microphotographs of the…
By treatment of 1,3-bis(3,4-dimethoxybenzyl)-3,4,5,6-tetrahydropyrimidinium chloride (1) with KOBu t and [PtCl2(PEt3)2]2 N-coordinated platinum complex (2) is obtained. The Pt atom is coordinated in square planar arrangements by two chloride ions in a trans-configuration, the N-formyl-N,N′-bisaryltrimethylenediamine n…
Second order non-linear optical features of azophenylcarbazole based derivative 9-(2,3-epoxy)propyl-2-(2,3-epoxy)propoxy-3-(4-nitrophenyl)azo-9H-carbazole in polycarbonate investigated at temperature 240 K, which is close to ß transition for polycarβonate, are presented. Using all-optical poling technique writing and…
Polypyrrole (PPy) nanostructures have been synthesized on indium doped tin oxide (ITO) substrates by a facile electrochemical route employing cyclic voltammetry (CV) mode. The morphology of the PPy thin films was observed to be influenced by the monomer concentration and formation of rod-like, cauliflower and granular…
Current-voltage (I-V) and impedance spectroscopy are employed to investigate the polarity of TiO2varistor. It is found that TiO2varistor shows typical polarity behavior, i.e., theI-Vcurve is asymmetric, the impedance slightly increases, and the capacitance slightly decreases when the bias voltage reverses. The effects…
In this paper, rigid-plastic finite element simulation software Marc / Auto-forge reflect compression AZ61B magnesium alloy case. Simulation results show that the stress, strain and temperature distribution within the sample is uneven, uneven distribution affect the organization, and with the changes in the deformatio…
Split Hopkinson Tensile Bar (SHTB) apparatus is widely used in experimentally investigating the mechanical properties of materials. The experimental results are significantly depended on the amplitude, the shape and the wave length of incident wave. However, theres no research on the effect of incident wave especially…
A computational and experimental study of the mechanical properties of the Viksint U-2-28NT sealant under uniaxial elongation and shear is carried out. The possibility of strength calculation of the sealant in terms of the elongation ratio limit value measured by the tension test results is shown.
Field emission and photo-enhanced field emission characteristics of single crystalline tapered CdS nanobelts have been investigated. The turn-on field for the emission current density of ~ 0.1 μA/cm2is found to be ~ 2.1 V/μm, which is much lower than reported values for various CdS nanostructures. The photo-enhanced f…
1-Dimentional nanostrutured Cadmium Oxide (CdO) thinfilms were prepared on p-type silicon (100) substrates by Chemical Bath Deposition (CBD). Deposition time was varied form 6 hrs to 12 hrs to tune the 1-Dimensitonal nanostructures. CdO thin films deposited for 6 hrs show needle like structures whereas film deposited…
In this paper, the ZTC4/B/C titanium matrix composite containing 0·2–0·5 wt-%B and 0·5–2 wt-%C was fabricated using melting–casting process. The microstructure and mechanical properties of as cast ZTC4/B/C Ti matrix composite were investigated. The results indicate that the microstructures of as cast ZTC4/B/C were con…
Large area graphene growth provides a facile route to the development of microwave devices based on the interaction of electromagnetic waves with the two dimensional gas of electrons in a graphene sheet. The strength of microwave scattering with graphene is determined by an impedance mismatch Zσ whose natural scale is…
A series of copolymers modified with oxidized starch containing maleic anhydride (MA), styrene sulfonic sodium (SSS) and oxidized starch (OS) were synthesized by the free-radical polymerization. The polymerization is initiated by ammonium persulfate. The effects of content of monomer and initiator, reaction time, reac…