Materials Literature
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Subcritical debonding is of particular concern for microelectronic packaging, coating, and adhesive applications. Time-dependent subcritical debonding at polymer/substrate interfaces occurs at lower mechanical loads and strain energy release rates compared with those required for catastrophic interface fracture. In th…
Inelastic X-ray scattering (IXS) is a general experimental technique for studying lattice and electronic excitations, which has undergone rapid development following the advent of the third generation synchrotron radiation facilities. X-ray Raman scattering (XRS) is inelastic scattering of X-rays due to the excitation…
The manganese phosphate with high P-O-Mn connectivity shows a two-step relaxation process in two distinct spin glass states.
The microwave dielectric properties of B2O3-doped (1 − x)La(Mg0.5Sn0.5)O3-xCa0.8Sr0.2TiO3 ceramics were investigated with a view to their potential for mobile communication devices. The B2O3-doped (1 − x)La(Mg0.5Sn0.5)O3-xCa0.8Sr0.2TiO3 ceramics were prepared by the conventional solid-state method. A dielectric consta…
Abstract The hollow glass bead (HGB) filled poly(acrylonitrile–butadiene–styrene) copolymer (ABS) composites were prepared by means of a twin‐screw extruder. The HGB surface of was treated using a silane coupling agent, and the filler volume fraction was range from 0 to 15%. The impact strength (σI) of the ABS/HGB com…
In this study, the Ti-doped high- polyoxide dielectric deposited on poly-Silicon treated with the postrapid thermal annealing (RTA) showed a higher effective dielectric constant, lower leakage current, higher breakdown electric field, smaller gate voltage shift, lower electron trapping rate, and larger than those of t…
Motivated by the observation in copper-oxide high-temperature superconductors, we investigate the appearance of kinks in the electronic dispersion due to coupling to phonons for a system with strong electronic repulsion. We study a Hubbard model supplemented by an electron-phonon coupling of Holstein type within dynam…
The kinetics of the Ru(III)-(edta) (edta(4-) = ethylenediaminetetraacetate) catalyzed oxidation of l-arginine by H(2)O(2) mimicking the action of nitric oxide synthases (NOSs) has been studied spectrophotometrically. The time course of the reaction of [Ru(V)(edta)O](-) with l-arginine was followed at 390 nm under cata…
Fast field-cycling (FFC) MRI allows switching of the magnetic field during an imaging scan. FFC-MRI takes advantage of the T(1) dispersion properties of contrast agents to improve contrast, thus enabling more sensitive detection of the agent. A new contrast agent designed specifically for use with FFC was imaged using…
Abstract The integration of redox proteins with nanomaterials has attracted much interest in the past years, and metallic single‐walled carbon nanotubes (SWNTs) have been introduced as efficient electrical wires to connect biomolecules to metal electrodes in advanced nano‐biodevices. Besides preserving biofunctionalit…
The reaction network and mechanism of the synthesis of methylenedianiline (MDA) from the condensation product of aniline and formaldehyde (aminal) on microporous acidic materials has been elucidated. The first step of the reaction, the decomposition of the aminal to N-benzylanilines, is limited by film diffusion, and…
In this paper, we employed the classical molecular dynamics simulations using Tersoff's potential to calculate the elastic constants of the silicon carbide (SiC) crystal at high temperature.The elastic constants of the SiC crystal were calculated based on the stressstrain characteristics, which were drawn by the simul…
Two new coordination polymers, [Pb2(L)4(H2O)] · 4H2O (1) and [Ni(L)2(H2O)2] · 2H2O (2), were obtained by hydrothermal reactions of 3,5-di(1H-imidazol-1-yl)benzoic acid (HL) with corresponding metal nitrates. In 1 and 2, each L− links two metals to form 1-D double strand chains, which are further connected by hydrogen…
We have investigated the temperature and field dependence of the critical current for YBCO coated conductors fabricated by metal-organic deposition. Samples with Dy2O3or BaZrO3nanoparticle pinning centers were compared with undoped and Dy-substituted YBCO. While emphasis in development is often limited by practical co…
Abstract A thermosensitive grafted hydrogel was investigated for heating‐activated drug release. The hydrogel was created by grafting oligomers of N‐isopropylacrylamide‐co‐acrylamide (AAm) to a poly(2‐hydroxyethyl methacrylate), or PHEMA, hydrogel. N‐Isopropylacrylamide‐co‐AAm oligomers were synthesized with a range o…
Three nickel(II) complexes of 5,5-diethlybarbiturate (barb) with (2-aminomethyl)pyridine (ampy), (2-aminoethyl)pyridine (aepy), and (2-hydroxyethyl)pyridine (hepy), [Ni(barb-N)2(ampy)2] (1), [Ni(barb-N,O)(aepy)2](barb) · H2O (2), and [Ni(barb-O) 2(hepy)] · 2H2O (3), have been synthesized and characterized by elemental…
We consider several systems that are confined within a softly repulsive sphere. The first one is a model protein, crambin, which is described by a structure-based coarse grained model. We demonstrate that the folding process is accelerated by the hydrodynamic interactions (HI) in a way that depends on the radius of th…
Abstract Polyacrylonitrile (PAN) was grafted from surfaces of chloro‐modified silica‐gel with their surface chlorines as initiation sites, using an iron (III)‐mediated surface‐initiated atom transfer radical polymerization (ATRP) with activators regenerated by electron transfer (SI‐ARGET ATRP) method. The graft reacti…
Abstract Durable curcumin‐treated antibacterial polyethylene terephthalate (PET) fabrics (against Staphylococcus aureus) were produced by dyeing with curcumin after surface activation using vacuum ultraviolet excimer lamp at 172 nm. Surface change properties of the exposed fabrics were characterized by surface analysi…
This work aims to provide a basic understanding of the water dispersibility of a 1:1 stoichiometric polyelectrolyte complex (SPEC) in water in the absence of low-molecular-weight salts. We studied the complexation of a linear polyanion, potassium poly(vinyl alcohol sulfate) (KPVS), with a cationic polyelectrolyte nano…