Materials Literature
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A new benthic freshwater diatom, Achnanthidium dolomiticum sp. nov., was identified from light and scanning electron micrographs. The most characteristic morphological features are a narrow, but distinctive fascia; a filiform raphe with narrowly spaced central ends and a very narrow and straight axial area on the raph…
The use of conducting molecular materials is a rapidly developing, multidisciplinary field of research, offering a wide variety of possibilities for the future. It is of particular relevance to nano fabrication and technology because it offers high density, small size integrated and multifunctional properties that can…
Abstract Summary: A novel type of glycerol‐derived, water‐soluble polycarbonate with pendant, primary hydroxyl groups was prepared from 2‐(2‐benzyloxyethoxy)trimethylene carbonate (BETC). Ring‐opening polymerization of BETC and 2,2‐dimethyltrimethylene carbonate (DTC) gave narrow distribution of homopolymers or random…
The conduction behavior of La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3- α ceramics was investigated using electrochemical methods under various atmospheres in the temperature range of 600−1000 °C. The proton conduction in La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3 - α ceramics is the first time it has been discovered in a hydrogen-containin…
Anisotropic growth of nanocrystalline PbS with a variety of morphologies was achieved via hot colloidal synthesis in the presence of Au nanoparticles. Synthesis using Au nanoparticles produced more uniform diameter nanowires than could be obtained in their absence. A variety of other morphologies, such as nanorods, na…
Abstract Summary: An enzymatic one‐pot procedure has been developed for the synthesis of difunctional polyesters containing terminal thiols and acrylates. Candida antarctica lipase B was used as a catalyst for the ring‐opening polymerization of ω ‐pentadecalactone. The polymerization was initiated with 6‐mercaptohexan…
Abstract The novel nanostructures are fabricated by the spatial chemical modification of nanowires within the anodic aluminum oxide (AAO) template. To make the nanowires better dispersion in the aqueous solution, the copper is first deposited to fill the dendrite structure at the bottom of template. During the process…
A different method is proposed to evaluate the electrostatic potential and electric field from x-ray diffraction data by using maximum entropy method. The efficiency of the method is revealed in the application to a ferroelectric material ${\mathrm{PbTiO}}_{3}$. Visualized electrostatic potential and electric field on…
Temperature-programmed oxidation (TPO) is used to determine the oxidation reactivity of carbonaceous deposits formed on different substrates via the thermal stressing of jet fuel samples. The multiple CO 2 peaks in TPO profiles are attributed to differences in the oxidation reactivity of the deposits, which is related…
One possible strategy for creating three-dimensional (3D) tissue-engineered organs in vitro is to develop a vasculature for sufficient transport of oxygen and nutrients within these constructs. Here, we describe a novel technique to fabricate endothelialized tubes with predetermined 3D configuration, as a starting poi…
We present a study of the factors that influence the adsorption of CO on a Pt(111) surface. Coadsorption of O and OH, as well as alloying of Ru is investigated. We find that coadsorption of CO either with O or OH on Pt weakens the strength of the Pt-CO bond, through a largely strain mediated interaction. Alloying Pt w…
ABSTRACT The effects of hydrogen charge on cyclic stress–strain properties, slip band morphology and crack behaviour of annealed medium carbon steels (JIS‐S45C) were studied. The total strain range of the stress–strain hysteresis loop in the hydrogen‐charged specimen was smaller than that in the uncharged specimen. Lo…
Abstract Summary: A novel thermosensitive amphiphilic copolymer (PCL‐ g ‐P(NIPAAm‐ co ‐HEMA)) comprised of hydrophobic PCL segments and hydrophilic P(NIPAAm‐ co ‐HEMA) segments was designed and synthesized. The structure of the copolymer was characterized by FT‐IR, 1 H NMR and GPC analysis. The copolymer may self‐asse…
Pt/gamma-Al2O3 catalysts were prepared using hydroxyl-terminated generation four (G4OH) PAMAM dendrimers as the templating agents and the various steps of the preparation process were monitored by extended X-ray absorption fine structure (EXAFS) spectroscopy. The EXAFS results indicate that, upon hydrolysis, chlorine…
From crystallographic point of view, ${\mathrm{Al}}_{4}\mathrm{Si}{\mathrm{C}}_{4}$ can be described as ${\mathrm{Al}}_{4}{\mathrm{C}}_{3}$-type and hexagonal SiC-type structural units alternatively stacked along [0001] direction. However, relationship between this layered crystal structure and mechanical properties i…
Abstract Thermomechanical properties and crystallization behavior of poly(ethylene terephthalate) (PET) nanocomposites containing layered double hydroxide (LDH) were investigated. To enhance the compatibility between PET matrix and LDH, dimethyl 5‐sulfoisophthalate (DMSI) anion intercalated LDH (LDH‐DMSI) was synthesi…
Electrospinning is a relatively simple and versatile method to produce polymer nanofibres and their composites. In this work, functionalized multiwalled carbon nanotubes (f-MWNTs) were used for the fabrication of conducting nanocomposite fibres, in comparison with the composite nanofibres made of unfunctionalized MWNT…
Seven new cyano-bridged heterometallic systems have been prepared by assembling [M'(rac-CTH)]n+ complexes (M' = CrIII, NiII, CuII), which have two cis available coordination positions, and [M(CN)6]3- (M = FeIII, CrIII) and [Fe(CN)2(bpy)2]+ cyanometalate building blocks. The assembled systems, which have been character…
The apatite forming ability of biopolymer bacterial cellulose (BC) has been investigated by soaking different BC specimens in a simulated body fluid (1.5 SBF) under physiological conditions, at 37 degrees C and pH 7.4, mimicking the natural process of apatite formation. From ATR-FTIR spectra and ICP-AES analysis, the…
Abstract Summary: Poly(3‐alkoxythiophene)s with different degrees of regioregularity were prepared using three different methodologies. It is shown that their Faraday rotation is highly dependent on the degree of regioregularity. The origin of the differences in regiospecificity of the methodologies is discussed. Stru…