Materials Literature
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Purpose – The aim of this paper is to synthesise polyester/silica hybrid resins and their hybrid polyurethanes via in situ (IS) and blending (BL) methods and to evaluate the effect of preparation method, interaction type and silica content on the physico‐chemical and thermal properties of polyurethane/silica (PU/Silic…
Purpose Cyclohexanone‐formaldehyde resins (CF‐Rs) were in situ modified with aniline, 4‐aminodiphenylamine, and N ‐ N ′‐diphenyl‐1,4‐phenylene diamine in presence of sodium hydroxide. The purpose of this paper is to report the synthesis of conducting resins with aniline, dimer and trimer aniline, with a one‐step metho…
In synthesis in a solution phase, adsorbates such as halides can interact selectively with different metal crystal facets and affect the final morphology of nanocrystals. Pseudo-halide thiocyanate ions (SCN-) can also adsorb on the metal surface, but they have never been used for the synthesis of shape-controlled coll…
A novel sulfate-reducing bacterium, designated C1TLV30(T), was isolated from wood falls at a depth of 1693 m in the Mediterranean Sea. Cells were motile vibrios (2-4 × 0.5 µm). Strain C1TLV30(T) grew at temperatures between 15 and 45 °C (optimum 30 °C) and at pH 5.4-8.6 (optimum 7.3). It required NaCl for growth (opti…
OPTICAL PROPERTIES AND APPLICATIONS OF FERROELECTRIC AND ANTIFERROELECTRIC LIQUID CRYSTALS E.E. Kriezis, L.A. Parry-Jones, and S.J. Elston Introduction Material properties Alignment Optical properties of smectic structures Interaction with electric fields Displays Non-display applications ELECTRO HOLOGRAPHY AND ACTIVE…
To study spin flipping within the antiferromagnet IrMn, we extended prior Current-Perpendicular-to-Plane (CPP) Giant Magnetoresistance (GMR) studies of Py-based exchange-biased-spin-valves containing IrMn inserts to thicker IrMn layers-5 nm less than or equal to t(IrMn) less than or equal to 30 nm. Unexpectedly, AΔR =…
From measurements of the current-perpendicular-to-plane (CPP) magnetoresistance of ferromagnetically coupled [Co(90)Fe(10)/Cu]xn multilayers, within sputtered Permalloy-based double exchange biased spin-valves, we determine the parameter delta[(Co(90)Fe(10))/Cu] = 0.19 +/- 0.04 that sets the probability P of spin-flip…
We present a method for computing optical absorption spectra by means of a Bethe-Salpeter equation approach, which is based on a conserving linear response calculation for electron-hole coherences in the presence of an external electromagnetic field. This procedure allows, in principle, for the determination of the el…
A magnetic tunnel junction Fe3O4/MgO/Fe with (001) layer orientation is considered. The junction magnetic energy is analyzed as a function of the angle between the layer magnetization vectors under various magnetic fields. The tunnel magnetoresistance is calculated as a function of the external magnetic field. In cont…
We present experimental and theoretical results on hole-spin dynamics in bulk GaAs after ultrafast optical excitation. The experimental differential transmission are compared with a dynamical calculation of the momentum-resolved hole distributions, which includes the carrier-carrier, carrier-phonon and carrier-impurit…
The possibility of propagation of second sound waves in diamond single crystals depending on their dimensions, concentrations of isotopes and temperature is studied. At this correct account of phonon scattering on boundaries is important. The calculation of phonon collision frequencies is carried out in the reduced is…
A laboratory exercise using 27 Al NMR spectrometry to study the tetrahedral tetrahaloaluminate anions has been developed. Spectra of the homoleptic complexes [AlX 4 ] − and the dihalide anions [AlX 4 Y 4− n ] − (X, Y = Cl, Br, or I) are acquired, then the pairwise-additivity concept developed by Vladimiroff and Malino…
This work outlines a probabilistic model for predicting temporal evolution of the internal corrosion damage depth in active sites of pipelines. The evolution of damage is specified by a stochastic process with stationary independent increments and is characterised by the state of damage at a given time instant from th…
Ganz transparent: Die mit dem Titelverfahren erhaltenen transparenten hellgelben AuNP-Thiourethanharze mit <1 nm großen Goldnanopartikeln (AuNPs) fluoreszieren bei 690 nm (siehe Bild). Die analogen transparenten Urethanharze sind wegen der Oberflächenplasmonenabsorption durch die AuNPs rot gefärbt.
Abstract A series of diblock copolymers of n ‐pentyl methacrylate and methyl methacrylate (PPMA/PMMA BCP) with one or two terminal functional groups was prepared by sequential anionic polymerization of PMA and MMA using an allyl‐functionalized initiator and/or and end‐capping with allyl bromide. Allyl functional group…
Two pure hydrated alkali borates, Na 6 [B 4 O 5 (OH) 4 ] 3 ·8H 2 O and K 4 [B 10 O 15 (OH) 4 ], have been synthesized under mild hydrothermal conditions and characterized by single X-ray diffraction, infrared spectra, thermogravimetric analysis, differential thermal analysis, and chemical analysis. The enthalpies of s…
Interference light-induced photogeneration of metal nanoparticle in polymer films was explored. The nanoparticle was obtained from metal complex homogeneously dispersed in the film. Standing waves resulting from light interference were generated by irradiating nearly monochromatic light to the sample placed on a refle…
Metal island films show a characteristic absorption peak related to the surface plasmon resonance of free electrons. This kind of film can be used in absorbing coatings, together with dielectric layers. Such absorbing multilayer coatings, with and without the gradient of the silver mass thickness in metal island films…
A system of n spherical-cap drops, coupled by a network of conduits, coarsens due to surface tension forces. The total interfacial energy drives the fluid through the conduits such that, with time, the volume becomes increasingly localized into fewer large drops. The coarsening rate is predicted heuristically for drop…
Here, 5 nm Ag nanocrystals are deposited, using the same procedure, on various substrates differing by their rms roughness, wetting properties and nanoparticle-substrate interactions leading, consequently, to different nanocrystal orderings. Theoretical calculations are carried out to understand how these parameters i…