Materials Literature
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A new method utilizing image capture and processing was developed for the analysis of blood plasma coagulation at surfaces. The coagulation was detected in a cuvette by time-lapse image capture of light scattering from the developing fibrin network. By image processing and computer analysis of the captured image data,…
Abstract Polybutylene terephthalate (PBT)/acrylonitrile–butadiene–styrene (ABS) copolymer blends compatibilized by a mixture of styrene–acrylonitrile–maleic anhydride (ASMA) copolymers and epoxy resin (EP) were prepared through melt reactive extrusion. The morphological, rheological, and mechanical properties of these…
Nitrogen (N) is the most promising p-type dopant for zinc oxide (ZnO) with wurtzite structure. The substitution of N atoms for partial replacement of O atoms in wurtzite structure is predicted to cause the slight change in bonding state. We have synthesized ZnO and N-doped ZnO thin films by utilizing a pulsed laser de…
X-band and Q-band electron paramagnetic resonance (EPR) spectra of Cu(2+) in BaF(2) crystal were recorded in the temperature range of 4.2-200 K. Spin-Hamiltonian parameters of single Cu(2+) complexes and of Cu(2+)-Cu(2+) pairs were derived and discussed. A special attention was paid to the dimeric species. Their molec…
The modification of CaCO(3) crystal growth by synthetic L-Ser(PO(3)H(2)) and L-Thr(PO(3)H(2)) containing polypeptides is described. The amino acids Gly, L-Glu, L-Asp, L-Ser, L-Ala, and L-Lys induced rhombohedral calcite with a rough surface. Dipeptides, Xaa-L-Ser(PO(3)H(2)) (Xaa = Gly, L-Glu, L-Asp, L-Ser, L-Ala and L…
Abstract Thermal and dynamic mechanical behaviors of wood plastic composites made of poly vinyl chloride (PVC) and surface treated, untreated wood flour were characterized by using differential scanning calorimetry and dynamic mechanical analysis. Glass transition temperature ( T g ) of PVC was slightly increased by t…
This study aimed at the development of a novel silica xerogel matrix as a delivery tool for an anti-cancer drug. Doxorubicin was incorporated as a hydrochloride salt during hydrolysis and polycondensation of tetraethylorthosilicate (TEOS) in the sol-gel process. The effect of sol-gel synthesis parameters (drug concent…
Abstract We report a simple scheme to fabricate organic/inorganic hybrid nanostructures with extraordinary morphologies by one‐step spin coating, using a PS‐ b ‐PEO diblock copolymer as template coupled with sol‐gel chemistry. The shape and size of the titania nanoobject can be fine‐tuned by controlling the amount of…
In the textile industry, the wrinkled fabrics are regularly evaluated subjectively in reference to a set of visual standards. However, due to the disadvantages of visual evaluation, which are unreliable and time-inefficient, several objective methods were recently developed. In this paper, a new objective evaluation o…
In-situ electrochemical measurements during polishing and in static were performed for copper and barrier metals in two kinds of copper slurries using a rotating disk electrode apparatus. Current density during polishing in the slurry using APS as oxidizer is larger than in H2O2 as oxidizer for all metals. This is due…
Abstract The thiol‐functionalized zirconium oxocluster Zr 12 ( µ 3 ‐O) 8 ( µ 3 ‐OH) 8 (MP) 24 · 4MPA was used as inorganic nanosized building block in the thiol‐ene photopolymerization of APE and TH in a 1:1 molar mixture. Transparent and crack‐free coatings were obtained, and TEM analysis showed that the inorganic pa…
A series of europium(III) complexes based on the macrocyclic azacarboxylate structure, DO3A, have been investigated, incorporating benzophenone appended at N10 of the macrocycle via linkers containing amide bonds (H3DO3A = 1,4,7,10-tetraazacyclododecane-1,4,7-tris-acetic acid). Complexes [EuL(1-3)] incorporate N10-CH2…
The reaction of [Ru(2)Cl(O(2)CMe)(DPhF)(3)] (DPhF=N,N'-diphenylformamidinate) with aqueous HCl leads to the substitution of the acetate ligand to give the complex [Ru(2)Cl(2)(DPhF)(3)] (1). Similar reaction of [Ru(2)(O(2)CMe)(DPhF)(3)(H(2)O)]BF(4) with aqueous HBr or HI produces [Ru(2)Br(2)(DPhF)(3)] (2), and [Ru(2)I(…
Polycrystalline Zr-doped BiFeO 3 thin films were prepared by a sol-gel spin-coating technique on (111) Pt/Ti/SiO 2 /Si substrates. The films are of single phase as evidenced by X-ray diffraction, and microstructure characterization on the surface and cross-section morphology of the films was carried out by scanning el…
Abstract Nanocomposites based on fluoroelastomer and modified and unmodified sodium montmorillonite clays were prepared. Dynamic mechanical thermal analysis was performed on these nanocomposites over a range of temperatures (−60 to +60°C), frequencies (0.032–32 Hz), and strains (0.002%–2%). The results showed that the…
Abstract The influence of the composition ratio of pimelic acid/calcium stearate bicomponent nucleator on the β crystal form content of isotactic polypropylene (iPP) had been studied at the crystallization temperature of 120°C and duration of 30 min. It was found that the β crystal form content increased continuously…
This paper discusses transport methods for the investigation of the (Ga,Mn)As magnetic anisotropy. Typical magnetoresistance behaviour for different anisotropy types is discussed, focusing on an in depth discussion of the anisotropy fingerprint technique and extending it to layers with primarily uniaxial magnetic anis…
Abstract We review recent experiments at Columbia on electronic transport in graphene nanostructures. We define the graphene nanostructures by e‐beam lithography followed by oxigen plasma etch. In this way we can pattern nanoribbons, rings, as well as other nanostructures. We use this technique to pattern graphene nan…
Abstract Mechanical properties of isotactic polypropylene/wollastonite/styrene rubber block copolymers (iPP/wollastonite/SRBC) composites were studied as a function of elastomeric poly(styrene‐ b ‐ethylene‐ co ‐butylene‐ b ‐styrene) triblock copolymer (SEBS) and SEBS grafted with maleic anhydride (SEBS‐ g ‐MA) content…
With the help of a bis(beta-diketonate) ligand, a family of robust molecules is formed, all consisting of two [Mn(III)4] subunits that interact slightly magnetically with each other, through two bridging pyrazine ligands.