Materials Literature
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The surface-enhanced Raman scattering (SERS) properties of 4-aminothiophenol (PATP) adsorbed on self-assembled cobalt nanoparticle chains have been investigated. Based on the density functional theory (DFT), the experimental results were in good agreement with the calculated values of the characteristic bands both for…
The effect of inserting an anode functional layer (AFL) of NiO/yttria-stabilized zirconia (YSZ)–YSZ between the NiO–YSZ anode and the YSZ electrolyte on the performance of solid oxide fuel cells has been examined. Dual NiO/YSZ–YSZ composite powders synthesized by the polymerizable complex method result in composite na…
Direct Flame SOFCs with La0.75Sr0.25Cr0.5Mn0.5O3 − δ ∕ Ni Coimpregnated Yttria-Stabilized Zirconia Anodes Operated on Liquefied Petroleum Gas Flame, Zhu, Xingbao, Lü, Zhe, Wei, Bo, Huang, Xiqiang, Wang, Zhihong, Su, Wenhui
Magnetic pulse welding is an electromagnetically assisted high strain rate impact welding technology. The physical principle is similar to explosive welding and it also belongs to solid state impact welding. This high velocity oblique impact welding has been applied to various lap joint configurations. Three different…
Patterned surfaces with large effective slip lengths, such as super-hydrophobic surfaces containing trapped gas bubbles, have the potential to reduce hydrodynamic drag. Based on lubrication theory, we analyze an approach of a hydrophilic disk to such a surface. The drag force is predicted analytically and formulated i…
AbstrAct Purpose: The purpose of this article was to review some of the modification methods applied to improve mechanical, barrier and/or surface properties of polylactide (PLA). Design/methodology/approach: The presented modification methods were classified into three groups due to the dominant role of compositional…
Nanocrystals of undoped and copper doped zinc oxide (Zn1-x Cu x O (where x = 0.00 to 0.05) were synthesized by coprecipitation method. Crystalline phases and optical absorption of prepared samples were determined by X-ray diffraction and UV-visible spectrophotometer. The average particles size was determined from X-ra…
In recent years, ionic liquids developed to advantageous solvents for the dissolution and homogeneous processing of cellulose. Even if ionic liquids were already known for their capability of efficiently dissolving cellulose for a long time, significant efforts were made in the last years. New candidates were found, b…
Acrylamide was copolymerized with acrylic acid at different ratios using potassium persulphate initiation system in presence of a crosslinking agent and different doses of silver nitrate to yield hydrogels containing silver nanoparticles upon post treatment with sodium hydroxide. Swelling capacity and kinetics of swel…
We report spectrally-narrowed emissions that take place from an organic semiconductor slab crystal of 2,5-bis(4-biphenylyl)thiophene (BP1T) under a low excitation-intensity regime. These emissions are caused with a mercury lamp that operates on a household power supply with an electric current approximately 1 A. The B…
We performed molecular dynamics (MD) simulations to investigate equilibrium behavior of urea-water binary droplets on flat (graphitic) and pillared surfaces. The contact angles as a function of urea concentration on the flat surface are computed. It is found that the contact angle decreases as the urea concentration i…
Problem statement: The focus of this research is to discover the significant influences of substituting low concentration Sn at Zn-site as an Anti-Reflecting Coating (ARC) for Zn 1-x Sn x O compound. The effects of tin dopants on the structural and morphology properties of ZnO thin films prepared using the sol-gel met…
In this work, direct experimental evidence of the excitation energy transfer from silicon quantum dots (Si-QDs) to Nd ions has been given based on photoluminescence (PL) and PL excitation measurements in a wide spectral range. The indirect excitation of Nd ions by transfer from excited Si-QDs is possible and even more…
An aligned polyacetylene (PA) film was synthesized in a macroscopically-aligned nematic liquid crystal (N-LC) solvent using a gravity-flow method. Long and single nanofibers of less than 100 nm in radius were successfully prepared by ultrasonication of the aligned PA film immersed in ethanol. The usual PA film was syn…
This paper investigates the effects of abrasion on the penetration of an ogival-nosed projectile into concrete targets. A numerical procedure is constructed based on an abrasion model which is proposed based upon the experimental observations and a forcing function. The forcing function is a polynomial of the normal v…
The Pd(3)(dppm*)(3)(CO)(n+) enantiomers (n = 2 (2), 1 (3)) were prepared either from (R,R)- or (S,S)-P-chirogenic bis(phenyl-m-xylylphosphino)methane (dppm*; 1) and Pd(OAc)(2) in the presence of CF(3)CO(2)H, CO and water (n = 2), and then by reductive electrolysis (n = 1). The stable enantiomeric [Pd(3)((S,S)-dppm*)(3…
In many studies, natural flax fibers have been proven to be resistant and surgically suitable. Genetically modified flax fibers, derived from transgenic flax expressing three bacterial genes for the synthesis of poly-3-hydroxybutyric acid (PHB), have better mechanical properties than unmodified flax fibers. The aim of…
As part of an investigation into Ni(macrocycle) complexes as a new class of complex hydride hydrogen store catalysts, two isomers of the unusually stable nickel borohydride, Ni(cyclam)(BH4)2 (cyclam = 1,4,8,11-tetraazacyclotetradecane), have been isolated and characterised by means of single crystal X-ray diffraction,…
Here we point out some parameters, such as substrate roughness, deposition modes, alkyl chain length of the coating agents and solvent used to disperse the nanocrystals, that play a role in the control of nanocrystal ordering in 2D superlattices. The interparticle distances do not follow the rules which imply that the…
CuO nanowires were successfully made through a simple wet chemical method at room temperature by immersing on copper sheets in a 4 M ammonia solution for 4 days and then subjecting it to heat treatment. Immersion time and heat treatment have an important effect on the length, diameter, and density of the CuO nanostruc…