Materials Literature
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Abstract In situ forming biodegradable polymeric systems loaded with betamethasone (BTM) and betamethasone acetate (BTMA) were prepared using poly( DL ‐lactide‐ co ‐glycolide) (PLGA), ethyl heptanoate (EH), and N ‐methyl‐2‐pyrrolidone (NMP) as the biodegradable polymer, additive, and solvent, respectively. The drug re…
Demineralized Summit (DS) anthracite, DS annealed at 1673 K, and graphite are used to explore the effect of precursor order on structural transformations and H 2 evolution that result during reactive ball milling. Carbon structure was assessed before and after milling with temperature-programmed oxidation, X-ray diffr…
We present evidence for in-plane coupling in relaxor ${\text{PbMg}}_{1/3}{\text{Nb}}_{2/3}{\text{O}}_{3}$ / ferroelectric ${\text{PbTiO}}_{3}$ superlattices ${[{\text{PMN}}_{(1\ensuremath{-}x)\ensuremath{\Lambda}}/{\text{PT}}_{x\ensuremath{\Lambda}}]}_{10}$. For constant superlattice wavelength $\ensuremath{\Lambda}={…
Four new representatives of the natrochalcite structure type s.s. – A + Me 2+ 2 ( X 6+ O 4 ) 2 [(H 2 O)(OH)], monoclinic, space group C 2/ m , Z = 2 – with A + = Na or K, Me 2+ = Co or Ni, and X 6 + = S or Se, were structurally characterised in Part I of this study. These compounds feature an extraordinary hydrogen bo…
The domain-wall-induced reversal dynamics in compressively strained ${\text{Ga}}_{1\ensuremath{-}x}{\text{Mn}}_{x}\text{As}$ was studied employing the magneto-optical Kerr effect and Kerr microscopy. Due to the influence of a uniaxial part in the in-plane magnetic anisotropy $90\ifmmode^\circ\else\textdegree\fi{}\ifmm…
Abstract A novel tin‐coupled star‐shaped block copolymer (SB‐B) 4 Sn was synthesized by anionic polymeric techniques. This new copolymer exhibited two different types: One was star‐shaped polybutadiene‐ b ‐poly(butadiene‐ ran ‐styrene) ( S ‐PB‐PSB), and the other was star‐shaped polybutadiene‐ b ‐poly(butadiene‐ ran ‐…
Abstract An algorithm to elucidate the temporal bond polarizabilities from the surface enhanced Raman (SERS) intensities was employed to the case of methylviologen (MV) adsorbed on the Ag electrode. This enables us to obtain the properties of its SERS mechanisms and the effect of its adsorption. The analysis shows tha…
The objectives of this research were to investigate empirical and diffusion models for thin-layer crumb rubber drying for producing STR20 rubber using hot air temperatures of 110–130°C and to study the effect of drying parameters such as inlet drying temperature, volumetric flow rate, and initial moisture content on t…
The unsaturated cyclic [M3(dppm)3(CO)](2+) clusters (M = Pt, Pd; dppm = Ph2PCH2PPh2; such as PF6(-) salt) exhibit a cavity formed by the six dppm-phenyl groups placed like a picket fence above the unsaturated triangular M3 dicationic center. Electrostatic interactions of the M(3+) units inside this cavity with the car…
The angular dependence of the optical phonons of high-quality bulk ZnO has been systematically studied by means of Raman scattering. We report the observation of quasi-TO and quasi-LO modes for propagation directions covering the whole a – c mixing plane using a beveled ZnO single crystal sample. Scattering experiment…
The relaxor behavior of lanthanum modified lead zirconate titanate (PLZT) ferroelectric ceramics, for a La/Zr/Ti ratio of x/60/40, has been analyzed.An approximation to the dynamical behavior of the polar nano-regions (PNRs) has been discussed, taking into account a relaxation model, which considers a distribution fun…
Abstract We investigated by Raman spectroscopy (RS) the crystalline quality of CeO 2 thin films radio frequency magnetron sputtered on n‐type (111) Si substrates from CeO 2 target. The deposition temperature was in the range of 200–800 °C. We also realized structural investigations on CeO 2 layers after Rapid Thermal…
The preparation of polyolefin-based stereoregular diblock copolymers (BCPs) by postpolymerization of hydroxy-capped isotactic polypropylene (iPP) led to the successful generation of a series of structurally well-defined iPP-based stereoregular BCPs for self-organizing into various nanostructures. The hydroxy-capped iP…
Similar to native cardiovascular tissues, the mechanical properties of engineered cardiovascular constructs depend on the composition and quality of the extracellular matrix, which is a net result of matrix remodeling processes within the tissue. To improve tissue remodeling, and hence tissue mechanical properties, va…
Metal borohydrides have been attracting great interest as potential candidates for use as advanced hydrogen storage materials because of their high gravimetric hydrogen densities. In the present study, first-principles calculations have been performed for the newly reported dual-cation alkali metal borohydride LiK(BH…
We present an analysis of the phase and amplitude responses of guided resonances in a photonic crystal slab. Through this analysis, we obtain the general rules and conditions under which a photonic crystal slab can be employed as a general elliptical polarization beam splitter, separating an incoming beam equally into…
The mechanisms of chain selection and assembly of fibril-associated collagens with interrupted triple helices (FACITs) must differ from that of fibrillar collagens, since they lack the characteristic C-propeptide. We analyzed two carboxyl-terminal noncollagenous domains, NC2 and NC1, of collagen XIX as potential trime…
The lattice dynamics of LaFeAsO_{1-x}F_{x} (x=0, 0.1) and PrFeAsO_{1-y} (y~0.1) are investigated using inelastic x-ray scattering and ab-initio calculation. Measurements of powder samples provide an approximation to the phonon DOS, while dispersion is measured from a single crystal of PrFeAsO_{1-y}. A model that agree…
The temperature dependence of the optical conductivity of ${\text{CeTe}}_{2}$ was obtained for the $E\ensuremath{\parallel}ab$ plane and $E\ensuremath{\parallel}c$ axis at photon energies ranging from terahertz to visible light. Two gap states are found in the optical conductivity spectra. The magnitudes of the gaps a…
We present theoretical expressions relating the cohesive energy to the bulk modulus, the force constant and the lattice constant applicable to solids with a variety of crystal structures. We have found that the cohesive energy is directly proportional to the ratio between the product of the bulk modulus through the at…