Materials Literature
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Effects of Si on the repassivation kinetics and stress corrosion cracking ͑SCC͒ of alloy 304Si were examined by a scratch electrode technique and slow strain rate test in chloride solutions and compared with those of other stainless steels ͑SSs͒, 304 and 316L.Repassivation kinetics of these alloys and Fe-20Cr-xSi ͑x =…
A novel, simple, and scalable technique to control the formation of the nanofibers of polyaniline and its derivatives via porous membrane controlled polymerization (PMCP) is reported. Through appropriate synthesis conditions, there are nearly 100% nanofibers formed with diameters tunable from 20nm to 250nm via the sel…
The green coloured micro-phenoxo, micro-chloro and micro-phenoxo, micro(1,1)-azido bridged complexes of formula [Ni2(L)(Cl)(H2O)] x (C2H5)2O, 1 x (C2H5)2O, and [Ni2(L)(N3)(H2O)] x CH3OH x H2O, 2 x CH3OH x H2O have been synthesized, where L3- is the deprotonated form of 2,6-bis[N-(2-hydroxybenzyl)-N-{2-(dimethylamino)e…
The adsorption of 1 – phenyl–3- methylpyrazol – 5-one (HPMP) on mild steel surface from 0.5 M HCl solution was studied by using gravimetric technique. The values for free energy of adsorption, ΔGads0, were calculated at each surface coverage, θ, of the studied compound by applying themathematical model of Bockris – Sw…
We have synthesized a peptide-based supramolecular building block consisting of a cyclic Arg-Gly-Asp (cRGD) peptide segment and a beta-sheet-forming peptide segment. The block peptide was shown to self-assemble into a cRGD-coated nanoribbon structure, as revealed by circular dichroism (CD), dynamic light scattering (D…
OBJECTIVE: Human skin is a complex bilayered organ that serves as a protective barrier against the environment. The loss of integrity of skin by traumatic experiences such as burns and ulcers may result in considerable disability or ultimately death. Therefore, in skin injuries, adequate dermal substitutes are among p…
The recently developed class of artificially structured composite materials, termed metamaterials, has shown increasing importance in accomplishing necessary functional devices for THz applications. We have created a series of novel planar electric metamaterials operating at THz frequencies. Alteration of substrate pr…
Two techniques for improving corrosion resistance in magnesium alloys were combined, coating with high purity magnesium and treating with fluoride. The specimens used were commercial AZ31B alloy. A vapor deposition technique was applied for the coating. Temperatures of an evaporation source were varied in the range of…
A simple method for specific colorimetric sensing of aqueous mercury(II) has been developed by using a gold nanoparticle supported by triethylene glycol ligand (Au:S-EG(3)). The unusual kinetic behavior of the sensing process of Hg(2+) and the TEM images of the Au core, as well as the electrospray ionization mass spec…
We demonstrate optical critical dimension measurement of lines in silicon grating targets using back focal plane scatterfield icroscopy. In this technique, angle-resolved diffraction signatures are obtained from grating targets by imaging the back focal plane of a brightfield microscope that has been modified to allow…
The objective of this study was to investigate the effect of active hydroxyl groups on a titanium (Ti) surface on the bond strength between Ti and segmented polyurethane (SPU) composite through gamma-mercapto propyl trimethoxysilane (gamma-MPS). Active hydroxyl groups on Ti surface oxide were controlled by immersion i…
Ultra performance liquid chromatography (UPLC) analysis was utilized for the first time as a methodology for monitoring poly(amidoamine) (PAMAM) dendrimer surface transformations and product quality. Results were compared to high‐performance liquid chromatography (HPLC) and were found to provide a vastly improved anal…
The nature of the intrinsic luminescence of the lutetium aluminum garnet Lu 3 Al 5 O 12 (LuAG) has been analyzed on the basis of time-resolved spectral kinetic investigations upon excitation of two model objects, LuAG single crystals and single-crystal films, by pulsed X-ray and synchrotron radiations. Due to the diff…
Solid oxide fuel cells (SOFCs) with anode-side supports, along with -stabilized (YSZ) anode, YSZ electrolyte, and LSM-YSZ cathode, were prepared. Button cells yielded a power density up to in humidified and air at . The cells showed much-improved stability against coking in methane compared with conventional Ni–YSZ an…
The electrochemical oxidation of acetic acid in 1 M was studied on boron-doped diamond electrode using differential electrochemical mass spectrometry (DEMS). DEMS was used to identify products and intermediates of the reaction, monitored online during the potential sweep. The measurements showed that the main product…
Stable protein-conjugated silver sulfide nanoparticles, nanorods and nanowires have been prepared by an aqueous chemistry method and the study results showed they had potential applications for tumor treatment.
Electrochromic Ruthenium Purple-polymer nanocomposite films, fabricated by multilayer assembly, were found to exhibit sub-second switching speed and the highest electrochromic contrast reported to date for any inorganic material.
The effect of compatibilizers, namely, maleic anhydride grafted polypropylene (MAPP GR-205) and trimethylolpropane triacrylate (TMPTA), on the mechanical and morphological properties of the PP-cellulose (derived from oil palm empty fruit bunch fiber) and PP-oil palm empty fruit bunch fiber (EFBF) biocomposites has bee…
This paper describes a strategic approach utilizing a photocatalyst to obtain a solid surface with a high level of sustainable wettability (hydrophilicity or hydrophobicity). We clarified that the substances adsorbed on the surface could be successfully removed by photocatalytic oxidation resulting in sustainable high…
It is a wonderful honor and a great privilege for me to introduce this special issue of the Journal of Drug Targeting in recognition of the highly influential contributions Prof. Gregory Gregoriadi...