Materials Literature
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A dynamic two-scale model is developed that describes the stationary and transient mechanical behavior of concentrated suspensions made of highly porous particles. Particularly, we are interested in particles that not only deform elastically, but also can swell or shrink by taking up or expelling the viscous solvent f…
Diverse amorphous hydrogenated carbon and similar films containing additional elements were produced by Plasma Enhanced Chemical Vapor Deposition (PECVD) and by Plasma Immersion Ion Implantation and Deposition (PIIID). Thus a-C:H, a-C:H:F, a-C:H:N, a-C:H:Cl and a-C:H:O:Si were obtained, starting from the same feed gas…
The microstructure of the solution near the crystal–solution interface is important for understanding the crystal growth mechanism. The microstructure of KGd(WO4)2 crystal growth boundary layer was studied in situ by confocal laser Raman microscopy. The experimental results show that a free WO4 tetrahedron is the basi…
The whole process of a prismatic dislocation loop (PDL) formation around a misfitting spherical inclusion embedded in a homogeneous isotropic matrix is studied using level set dislocation dynamics. Two small half loops are first punched out around a spherical particle on a specific cylindrical surface along which the…
It has been shown that the presence of bicarbonate ions and chloride is necessary to produce stress corrosion cracking (SCC) in alloy 22 at anodic applied potentials. It has been suggested that the susceptibility to SCC could be related to the occurrence of an anodic peak in the polarization curves below the transpass…
Rigid large-inner-diameter (> 15.0 nm) multiwalled carbon nanotubes (LID-MWCNTs) were synthesized from cetyltrimethylammonium bromide (CTAB) and ammonium metatungstate, in which CTAB was converted to CNT structure and ammonium metatungstate was converted to WC nanoparticles inside of LID-MWCNTs.
The effect of hydrogen exposure on high strength steel, SCM435, based on a sharp notched specimen was investigated. Tensile tests were carried out in hydrogen gas and helium gas environments. In the hydrogen gas environment, specimens that were not exposed to hydrogen gas and specimens that were exposed to hydrogen ga…
The study of the ferrites YBaFe4−xMnxO7 shows that the substitution of Mn2+ for Fe2+ in YBaFe4O7 stabilizes the hexagonal symmetry at the expense of the cubic one for 1 ≤ x ≤ 2. Using combined measurements of a.c. and d.c. magnetization, we establish that Mn substitution for Fe in YBaFe4O7 leading to a cationic disord…
The structural and electrical properties of Pb0.98Sm0.02[(Zry,Ti1–y)0.98( Fe1/23+,Nb1/25+)0.02]O3 ceramics system with the composition near the morphotropic phase boundary were investigated as a function of the Zr/Ti ratio by X-ray diffraction (XRD). Studies were performed on the samples prepared by solid state reacti…
In this study, the natural polymeric sesbania gum was modified and used as a new size for the sizing of polyester/cotton yarn (T/C yarn). Oxidative degradation of sesbania gum was carried out by using sodium hypochlorite(NaClO), resulting in chain segment with relative smaller molecular weight, then short-chain vinyl…
A spinel LiMn2O4 is investigated via Raman spectroscopy at 514.5-nm excitation and X-ray diffraction. The dependence of Raman spectra on the different irradiated laser powers is determined and found to be different from that at 632.8-nm excitation. Based on our extensive analysis, our experimental results can be attri…
Lead-free piezoelectric Ag 2 O-doped 0.94(K 0.5 Na 0.5 )NbO 3 -0.06LiNbO 3 ceramics were investigated for their piezoelectric properties through use of a conventional sintering process. The effects of Ag dopants on the microstructure and the electrical properties of 0.94(K 0.5 Na 0.5 )NbO 3 -0.06LiNbO 3 ceramics were…
ART-123 is a recombinant soluble human thrombomodulin (hTM) with potent anticoagulant activity, and is available for developing antithrombogenic surfaces by immobilization. We focused on improving blood compatibility on the dialyzer surface by the physical adsorption of ART-123 as a safe yet simple method without usin…
Quasi free-standing graphene with Dirac fermion behavior has been recently demonstrated through gold intercalated epitaxial graphene. Herein, we investigate the electronic characteristics of gold-intercepted epitaxial graphene under a perpendicularly applied electric field. Evolution of the band structure of intercala…
Abstract An anticorrosion phosphate film with free of chromate, fluorides and nitrite, was successfully prepared on the surface of the magnesium alloy AZ31 via chemical deposition method. The effects of film-forming temperature and free acid on the corrosion resistance of the film were investigated through SEM. The an…
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The reaction of the(1R,2R)-N,N′-Bis(2-pyridylmethylene)cyclohexane-1,2-diamine (BPID) ligand with 2 equivalents of GeCl 2 •(dioxane) produced an unexpected germanium salt (1) while the reaction with two equivalents of TeBr 4 resulted in a novel doubly-charged Te salt (2). These compounds represent the first main group…
In prominent funding and policy statements, a particle with at least one dimension in the 1-300 nm size range must have novel physicochemical properties to count as a “nanoparticle.” Size is thus only one factor. Novelty of a particle's properties is also essential to its “nano” classification. When particles in this…
A raw material with high cellulose content and low content of hemicelluloses, residual lignin, extractives and minerals is required for many important applications in the pharmaceutical, textile, food and paint industries i.e. cotton and dissolving grade pulp are used. However, the high costs for the production of dis…
The shape deformation of hydrothermal-grown ZnO nanorods is observed. After annealing at high temperature, hexagonal ZnO nanorods change to become cylinder-like ones. The adjacent nanorods tend to connect to each other to form one nanostructure. Photoluminescence measurements show that a sample annealed at 600°C has a…