Materials Literature
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Ir-Sn bimetallic silica-based materials have been prepared via deposition of the molecular organometallic clusters (NEt4)2[Ir4(CO)10(SnCl3)2] and NEt4[Ir6(CO)15(SnCl3)] or via deposition of Sn organometallic precursor Sn(n-C4H9)4 onto pre-formed Ir metal particles. These solids possess promising properties, in terms o…
Experimental results on a template-assisted technique to fabricate uniform nano- and microchannels are presented. Different template materials, polystyrene and poly(vinyl alcohol) electrospun and spider silk fibres were coated with silica. After calcination mechanically stable and transparent channels with uniform tub…
The effect of pickling treatment on the pitting corrosion of hyper duplex stainless steel was investigated in a highly concentrated chloride environment. Increasing the pickling time in 10 vol% HNO3 + 5 vol% HF solutions at 328 K improved the resistance to pitting corrosion by increasing the pitting potential and pass…
A quantum dot (QD) conjugated whole-cell E. coli biosensor (E. coli-QD bioconjugates) was developed as a new molecular tool for probing cellular damage. The E. coli-QD bioconjugates were viable and exhibited fluorescence emission at 585 nm. Scanning electron microscopy (SEM) analysis of E. coli-QD bioconjugates reveal…
The effect of sintering temperature on the structure and piezoelectric properties of (1-x)Pb(Zr y Ti 1-y )O 3 -xSm(Fe 3+ 5+0.5)O 3 [PZT-SFN] sintered samples, with 0.47≤ y≤ 0.57, was investigated. The samples structure was determined by X-ray diffractometry and the piezoelectric properties by the resonance–antiresonan…
Incorporating Tb3+ and Mn2+ into a high efficiency BaCa2MgSi2O8:Eu2+ phosphor generates a green line peaking at 542 nm and a red emission band peaking at 660 nm. Upon 365 nm excitation, the absolute quantum yields of BaCa2MgSi2O8:Eu2+ phosphors doped with various Tb3+ ions all exceed 77%, indicating that the phosphor…
This study examines some physical and mechanical characteristics of polypropylene (PP) and calcium trioxocarbonate IV (CaCO3) composites prepared by melt blending. The mechanical (tensile strength and impact energy resistance) and physical (density and water absorption capacity) properties of the composites were evalu…
Propylsulfonic acid-functionalized mesoporous silica SBA-15 has been synthesized via one-step strategy at 130°C based on the co-condensation of TEOS and MPTMS in the presence of Pluronic 123 polymer and H₂O₂ in HCl aqueous solution. The synthesized solid exhibited hydrothermal stability in boiling water without signif…
In order to further study the aging properties of high temperature vulcanization (HTV) silicone rubber for composite insulator in the high-altitude region, tests of outdoor electric aging and ultraviolet accelerated aging have been carried out in the paper. The contact angles test, scanning electron microscopy (SEM) a…
The elastomer materials with hierarchical structure and suitable wettability are useful as biological surface model. In the present study, urethane resin and silicone resin elastomers with hierarchical rough surfaces were prepared and referred to as "fractal elastomers". We found a hierarchy of small projections that…
Vertically aligned silver nanorods were good substrates for surface‐enhanced Raman scattering. The surface‐enhanced Raman scattering sensitivity of nanorods can be regulated through the method that the silver nanorod is divided into four uniform silver sections using five uniform silicon sections. And the length of si…
In this contribution we introduce a technique for the fabrication of a new kind of organic nanofilm from polymer brushes. For this, we grew poly(styrene) brushes on a thin film of poly(vinyl alcohol) (PVA). The resulting graft polymer film was patterned into square-shaped sections using photolithographic techniques. A…
BiFe1-xAlxO3(x=0.05, 0.1) and BixBa1-xFe0.95Al0.05O3 (x=0.05, 0.07) ceramics were synthesized and their crystal structure, thermal and ferroelectric properties were investigated. X-ray diffraction and Raman data of the ceramics showed all the samples were rhombohedral with small crystal structure distortion. DSC resul…
The purpose of this study was to examine the effect of boronising heat treatment on the corrosion behaviour (in two different corrosive media) and wear properties (on two different counter sliding discs) of the DIN 1.4777 quality cast steel containing 1.7% C, 30% Cr and 1.1% Si. The steel supplied as cast was exposed…
Facts on the genesis and further development of adhesives are reported. Advantages of adhesivemelts (AMs) are analyzed owing to which their consumption has reached 15–21% of world production and consumption of adhesives. Statistical data are presented on the production of adhesives in different parts of the world, and…
Tensile creep tests were combined with detailed transmission electron microscopy in order to characterize the dislocation movements during creep and explain the creep properties of the Mg-Al-Ca AX52 die-cast alloy at 473 K. TEM observations indicate that dislocations are introduced within the primary α-Mg grain interi…
Several ammonium type salts and co-crystals have been used in drug formulations to increase or decrease solubility, to improve stability, toxicity and also reducing the hygroscopicity of the products. Basically, a wide range of chemically diverse acidsand bases with different pKa, solubilities , molecular weight and o…
We have designed and fabricated a broadband low radar cross section (RCS) metamaterial absorber with polarization-independent characteristic based on electromagnetic resonance. The absorbing mechanism is investigated by means of electric as well as magnetic field distributions and retrieval algorithm. Absorbing and RC…
Metallic alloys of uranium show great potential as transmutation fuels that could be used to burn long-lived and high-heat-producing minor actinides and fission products in nuclear reactors. In fuels, fission and radiation damage result in the production of a large number of intrinsic point defects and extrinsic fissi…
The Naval Undersea Warfare Center has funded a project to investigate the accuracy of various bolt models used to represent actual shipboard bolted connections within an analytical shock survivability assessment. The ultimate goal within this project is to develop finite element bolt representations that are not only…