Materials Literature
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One-photon and two-photon absorption properties of a double-conjugated-segment molecule (BSBAB) composed of two single-conjugated-segment molecules are studied by using density functional theory at ab initio level. The optimized geometrical structure shows that the two single-conjugated-segment parts in molecule BSBAB…
The effects of weathering on the surface properties of wood-plastic composites (WPC) were examined. High-density polyethylene (HDPE) based WPCs made from modified wood flour (untreated, extractives free, and holocellulose (delignified) fibers) were subjected to accelerated (xenon-arc) weathering. Colorimetry and Fouri…
Alloys 617 and 230 are currently identified as two leading candidate metallic materials in the down selection for applications at temperatures above 760°C in the Gen IV Nuclear Reactor Systems. Qualifying the materials requires significant information related to Codification, mechanical behavior modeling, metallurgica…
work evaluation of influence of porosity and microstructure on mechanical properties of AZ91 alloy coming from three suppliers was done. It was found that the structural factors influence the AZ91 alloy's strength properties are: the pores' area fraction, the area fraction of the Mg17Al12 phase of massive and lamellar…
Semiconductive La-doped BaSnO3 with a perovskite-type structure was prepared at relatively low temperatures using a polymerized complex method. The Ba-, La-, and Sn-citrate complexes polymerized randomly with citric acid and ethylene glycol were synthesized and then pyrolyzed to form amorphous precursor. The perovskit…
Fifteen acid soils of Mizoram representing Ultisols and Inceptisols, and Madhya Pradesh, representing Alfisols, were studied to characterize the nature of acidity in relation to different forms of iron (Fe) and aluminum (Al). The mean contents of Fe and Al were extracted by various extracting reagents and were found t…
Phase transformation, microstructure and magnetic properties were investigated for Cu-(11-14) mol%Mn-20 mol%Ga. The structures of the magnetic domains were also investigated by Lorentz microscopy and electron holography. Plate-like martensite phase(ζM, ordered hcp) was observed in as-quenched Cu-12 mol%Mn-20 mol%Ga. P…
Nanotechnology quantum well thermoelectric materials have been developed that have high Figures of Merit and that can attain very high coefficients of performance (COP) to satisfy the requirements for cooling room temperature detectors. Hi-Z Technology, Inc. (Hi-Z) has developed Si/SiGe solid state quantum well (QW) t…
BL‐17A is a new beam line for protein crystallographic experiments at the Photon Factory. The high brilliance beam derived from the new short‐gap undulator, SGU♯17 offers unique possibilities for protein crystallographic experiments at the Photon Factory including micro‐crystal structure analysis and structure determi…
This chapter gives a general overview of the defect types and their origins at the bulk crystal growth. The role of thermodynamics, kinetics, convection, segregation, thermomechanical stress and non‐stoichiometry are considered. The possible influence of the structure of the fluid phase is implied. Results of modellin…
In this study, the aqueous solution method was employed to synthesize one-dimensional well-aligned ZnO nano-array on ITO glass substrate. We can find that the dimension of ZnO nanorod will changes with different growth temperature. X-ray diffraction patterns show that the nanorods are high-quality crystals growing alo…
The Einstein model to consider thermal effect in universal equations of state is modified, and an approach to solve parameters at absolute zero temperature from experimental data at a reference temperature is proposed and applied to the Baonza equation. The thermal Baonza equation is applied to study thermo-physical p…
The presence of foreign particles in the undercooled melt can influence the evolution of solidification structure and change the dendritic morphology. In this work, according to the KKS model, a hybrid phase field model for binary alloys, which takes into account the random crystallographic orientation, is developed t…
Modified stainless steel surfaces were fouled with whey protein solutions to study the deposition mechanisms and the effects of surface modification. Stainless steel samples were coated with diamond-like carbon (DLC) and titanium nitride (TiN). These surfaces are expected to present different surface chemistries to st…
Antimicrobial fibres were produced by the implementation of nanoscaled silver particles into a solution of cellulose and N-methylmorpholine-N-oxide (NMMO). Usage of particles with 80 – 140 nm and 5 - 20 nm grain size, which have a large surface, resulted in a much greater release of silver ions. Moreover, Lyocell fibr…
The vapor composition in the Bi-Sb-O system has been determined by Knudsen cell mass spectrometry. We have calculated the individual mass spectra of the Bi 3 SbO 6 , Bi 2 Sb 2 O 6 , and BiSb 3 O 6 molecules and determined the partial pressures of all the vapor species identified. Bi 3 SbO 7 and BiSbO 4 have been shown…
In the aim to define a structure NLO properties relationship, theoretical calculations have been used to investigate the role of different parts (substituents and π-system) of disubstituted conjugated systems based on naphthalene, cinnoline and quinazoline moieties.Using metallation and cross-coupling reactions we rep…
It is known that most enzyme‐facilitated reactions are highly temperature dependent processes. In general, the temperature coefficient, Q 10 , of a simple reaction reaches 2.0–3.0. Nevertheless, some enzyme‐controlled processes have much lower Q 10 (about 1.0), which implies that the process is almost temperature inde…
The deuterium atoms in both Ce2Ni7Dâ¼4 and CeNi3D2.8 occupy interstices in the CeNi2 structural slabs only, while the interstices in the bulk of the CeNi5 slabs remain empty. A considerable fraction of these deuterium atoms surround nickel in deformed tetrahedral configurations reminiscent of the [NiH4]4- complexes f…
Influence of short-time duplex heat treatment on the fatigue strength of α + β titanium alloy Ti-6Al-4V was investigated. When the alloy was solution-treated for 60s at 1203K and water-quenched, prior β phase was hardened since a part of this phase was transformed to acicular α' martensite phase. With subsequent aging…