Materials Literature
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Disc-shaped clay particles (Laponite) with a thickness of 1 nm and a diameter of 25 nm were bridged into a physical gel (shake gel) by poly(ethylene oxide) (PEO) chains under shear. The shake gels formed transformed again into a liquid when the shear stopped. The critical concentrations of Laponite and PEO required fo…
Transparent monoliths made of new interpenetrating networks based on titanium-oxo-poly(hydroxyethyl methacrylate) (PHEMA) nanocomposites are obtained through one pot synthesis with low shrinking and show a strong laser-induced darkening activity.
This work was carried out to investigate the effect of welding variables (includes wire feeding techniques, wire feeding rates and heat inputs) on the cooling rate, Δt8⁄5 (cooling time from 800 to 500°C), in the weld and heat affected zone (HAZ) areas of multi-pass weldments in a super duplex stainless steel. Furtherm…
The crystal structure of a new monoclinic polymorph of 2,2′ : 6′,2″ terpyridine (terpy) that contains two independent but structurally similar molecules, and crystallises in a space group P21/c, is reported. Variable-temperature single-crystal X-ray diffraction studies at 100, 150, 200 and 250 K show that the b-axis l…
Raman spectra of amorphous hydrated ruthenium oxide ( RuO 2 ∙ x H 2 O ) thin films were measured in situ during electrochemical charging/discharging cycles. As hydrogen was intercalated into the films, a peak at 590 cm − 1 emerged. The emergence of this peak was accompanied by a decrease of a peak at 700 cm − 1 . To i…
Recently, there have been significant experimental advances in cancer treatment using metallic nanoshells, which are silica spheres coated with gold. Nanoshells posses an excellent tunability of their resonance frequency as a function of the relative sizes of the core and the thickness of the shell, consequently offer…
Human embryonic germ cell derivatives, a heterogeneous population of uncommitted embryoid body derived (EBD) cells, were studied in a bioactive three-dimensional (3D) fibrous culture. Their proliferation, morphology, gene expression and differentiation were investigated to gain insights on development of 3D bioactive…
Nonoriented electrical steels should have both low core loss and high permeability. These magnetic properties are largely affected by grain size and texture. The research on grain size optimization during grain growth has been very extensive whereas little attention has been paid to texture transformation during grain…
A complex study of the magnetic, electric, magnetoelectric, and magnetoelastic properties of GdMnO 3 single crystals has been performed in the low-temperature region in strong pulsed magnetic fields up to 200 kOe. An anomaly of the dielectric constant along the a axis of a crystal has been found at 20 K, where a trans…
Bi Fe O 3 (BFO) films of pure perovskite phase were deposited on Pt ∕ Ti O x ∕ Si O 2 ∕ Si (Pt), La Ni O 3 ∕ Pt ∕ Ti O x ∕ Si O 2 ∕ Si (LNO), and Ba Pb O 3 ∕ Pt ∕ Ti O x ∕ Si O 2 ∕ Si (BPO) substrates by rf magnetron sputtering. The BFO film was grown with random orientations on Pt whereas highly (100)-oriented and (1…
This review focuses on the development of photochromic dopants designed to trigger the switching of ferroelectric liquid crystals photomodulation of the spontaneous polarization (). The photomodulation of has been achieved by reducing the polar order of a FLC host the change in shape of azobenzene dopants upon - photo…
A novel methodology for designing wide view circular polarizers is proposed. Both single wavelength and broadband wide-view circular polarizers are discussed. Over the +/-85 degrees viewing cone, the light leakage from the crossed circular polarizers is less than 2.87x10(-4) using the proposed single wavelength circul…
In this paper, we synthesized a novel yellowish orange phosphor, -doped high-temperature phase (HTP) at 1020°C. The primary crystal structure of is determined as monoclinic structure with a space group of . The excitation spectrum of -doped exhibits a broad-band between 250 and 500 nm with three peaks of around 327, 3…
Phenotypic plasticity is a key factor for the success of organisms in heterogeneous environments. Although many forms of phenotypic plasticity can be induced and retracted repeatedly, few extant models have analyzed conditions for the evolution of reversible plasticity. We present a general model of reversible plastic…
Antimicrobial films were produced by incorporating partially purified lysozyme into films of crude exopolysaccharides (59% pullulan) obtained from Aureobasidium pullulans fermentation. After film making, the films containing lysozyme at 100, 260, 520 and 780 μg/cm2 showed 23 to 70% of their expected enzyme activities.…
Highly selective photocatalytic epoxidation of olefins proceeds on Ti-containing silica with tetrahedrally coordinated Ti-oxide species with molecular oxygen and a simple addition of MeCN.
The syntheses, characterization and X-ray crystal structures of the first two examples of asymmetrically bridged dinuclear copper(ii) complexes containing a ferrocenecarboxylato ligand and a methoxo group in [{Cu(dmen)}2(micro-OMe){micro-O2C(eta5-C5H4)Fe(eta5-C5H5)}](ClO4)2, 1, (dmen=N,N-dimethylethylenediamine) or an…
Caterpillar-motion like rotational isomerization of meso-aryl substituted [26]- and [28]hexaphyrins has been revealed for the first time. Two-electron oxidation and reduction induce reversible interconversion between N,N'-dimethyl [26]- and [28]hexaphyrins with a rotational isomerization, in which the N-methylated pyr…
Three principle methods are available for fabric draping analysis; namely, simplified “mapping” and Finite Element methods applied at the macro- and meso- levels. The mapping method was first introduced in the 1950’s and due to its simplicity is still the preferred technique for industrial work. During the past decade…
Staining of tissues by dyes is accomplished through various types of bonds, some of which have been poorly defined in traditional biological literature. Here, basic principles of bonding are reviewed to establish uniform terminology and definitions consistent with the field of chemistry. The concept of charge - its pr…