Materials Literature
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Highly organized mesoporous titania and silica thin films were synthesized using a triblock copolymer-templated sol-gel method via an evaporation-induced self-assembly (EISA) process. For the first time, we have found that the mesophase of these metal oxides can be selectively controlled by varying the spin-coating co…
Silica becomes increasingly used in chemical, pharmaceutical, and (nano)technological processes, resulting in an increased demand for well-defined silicas and silica-based materials. The production of highly structured silica from cheap starting materials and under ambient conditions, which is a target for many resear…
Performance of porous zinc electrode in alkaline secondary battery systems suffers mainly from shape change and dendrite growth. Polyaniline coating in direct contact with porous zinc electrode was found to restrict zincate movement away from the test electrode, which otherwise may lead to a decrease in electrode surf…
Benthic diatoms, which often dominate marine biofilms are mostly pennate along with a few centric species that have an attached mode of life. Even though the range of diatoms in biofilms is diverse, their ecology is poorly understood because of the difficulty in sampling and enumeration. Scraping or brushing are the t…
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Unit-cell parameters, Raman scattering profiles and DTA curves were measured on monoclinic tridymite from fired silica brick. Ten peaks appear in the Raman measurements from 100 to 1250 cm−1 at 25°C, and their positions and widths show no significant change up to 110°C. The monoclinic unit-cell parameters, a, b, c and…
ABSTRACT Fractions from the sorghum dry milling industry, including bran, are a potential source of kafirin. Free‐standing plasticized cast films were prepared from defatted kafirin preparations from red and white sorghum flour and bran fractions, and from commercial zein. All the kafirin preparations were able to for…
Many highway agencies have been using Geographic Information System (GIS) for analyzing accident data. Identification of problematic locations is one of the most important aspects in accident studies. The GIS based application combines the information collection capabilities with the visualization. The GIS and Road Ac…
New correlations between various CPTU factors, undrained shear strength and overconsolidation ratio have been developed for soft to medium stiff clays. The correlations are based on comparing the CPTU results against undrained traxial compression strength and preconsolidation pressure determined on block samples of ve…
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…