Materials Literature
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Benthic diatoms and bacteria often co-operatively build up phototrophic epilithic biofilms. Studying the properties and contributions of the individual partners requires the establishment and maintenance of axenic cultures of the involved organisms. Axenification of biofilm organisms is often challenging, because bact…
基于上缘四脯氨酸修饰杯[4]芳烃和各种紫精客体分子的相互作用, 我们构筑了一类新型的二元超分子水凝胶. 得到结果显示, 在酸性条件下, 溴化紫精盐最易于促进四脯氨酸修饰杯[4]芳烃形成水凝胶. 并且经落球法测定了所制备水凝胶的凝胶-溶胶转变温度, 采用原子力显微镜和扫描电子显微镜表征了水凝胶的微观形态, 发现紫精的侧链对水凝胶性质具有显著影响, 包括凝胶-溶胶转变温度和微观形态. 值得注意的是, 该类水凝胶不仅具有优良的电刺激响应性, 而且能够通过化学、pH和热等多种因素进行调控.
In this contribution the influence of pressure on an SOFC is studied with steam-reformed methane as a fuel. Experiments were performed with a reformate containing 58.4% H2, 20% H2O, 12.2% CO, 5.5% CO2 and 3.9% CH4 and another mixture containing 18% H2, 34% H2O, 2% CO, 27% CO2 and 19% CH4 as well as a hydrogen/nitrogen…
The structural changes and mechanical properties of spun-bonded polylactide (PLA) nonwovens resulting from artificial weathering were analyzed in respect to their application in agriculture. The spun-bonded nonwovens were stabilized on a calender at various temperatures ranging from 60 to 110°C. The weathering process…
The synthesis and controlled ring-opening polymerization (ROP) of a six membered cyclic carbonate monomer with pendant reversible addition–fragmentation chain transfer (RAFT) functionality is reported. The growth of fast propagating monomers (methyl acrylate, tetrahydropyran acrylate and N-isopropylacrylamide) from th…
Hierarchical FeNi3 assemblies with caltrop-like architectures have been successfully synthesized via a facile solution phase chemical route. The morphology evolution process and possible formation mechanism of FeNi3 assemblies have been investigated. Magnetic measurements reveal that the coercivity, Hc, of the FeNi3 a…
The syntheses, structures and catalytic activities of five magnesium complexes supported by HL1 (HL1 = N-(1H-pyrrol-2-ylmethylene)(2-pyridinyl)methanimine), HL2 (HL2 = N-(1H-pyrrol-2-ylmethylene)-2-pyridineethanimine), HL3 (HL3 = 2-pyrrolecarbaldmethylimine), HL4 (HL4 = N-((1H-pyrrol-2-yl)methylene)(phenyl)methanimine…
Light-emitting europium-doped tantalum-oxide thin films were prepared by radio-frequency magnetron sputtering. Red photoluminescence was obtained from the films after annealing by ultraviolet-laser excitation. Four peaks having wavelengths of around 600, 620, 650, and 700 nm were observed from films annealed at 600 to…
A transparent and emitting ceramic of Y2O3 doped with 6% Tm 3+ ions is fabricated by vacuum sintering with ZrO2. Absorption, photoluminescence (PL), and PL excitation (PLE) spectra are investigated in a spectral range of 200 to 2 100 nm at various temperatures between 296 and 12 K. Intense emission band appears at 450…
[Zn(CH3COO)2 + PVP]/[C2H5O)4Si + PVP]/[SnCl4 + PVP]/[Ti(OC4H9)4 + CH3COOH + PVP] precursor composite fibers have been fabricated through self-made electrospinning equipment via electrospinning tech-nique. ZnO/SiO2/SnO2/TiO2 composite nanofibers were obtained by calcination of the relevant precursor composite fibers. T…
Forty-three organisations from 22 countries network their capacities of research in SARNET (Severe Accident Research NETwork of excellence) to resolve the most important remaining uncertainties and safety issues on severe accidents in existing and future water-cooled nuclear power plants (NPP). After a first project i…
A one-pot synthesis approach for a SiBNC precursor polymer is presented. With respect to composition and structure it is similar to the polymer as produced from the known single-source precursor DMTA (dichloroboryl methyl trichlorosilyl amine), as confirmed by FTIR spectroscopy. The new route results in a higher ceram…
In this study, the steady state current-overpotential (I-η) characteristics of the oxygen reduction reaction on the system Pt|yttria-stabilized zirconia (YSZ) were investigated at temperatures between 600 and 720°C. The I-η curve of Pt thin-film model electrodes on YSZ (100) exhibited a quite unexpected behavior, with…
Improving device performance and extending Moore's Law can be aided through active solid-state cooling, using thermoelectric (TE) materials with a high figure of merit (zT > 1). TE nanowires promise a path to higher zT, and electrochemical deposition (ECD) is a simple and scalable means for synthesizing TE nanowires.…
The effective interaction between spherical colloids in nematic liquid crystals is investigated in the framework of the Landau-de Gennes theory. The colloids differ in their surface interaction with the nematic liquid crystal. The particles induce quadrupolar far-field distortions in the nematic matrix, favouring home…
In this paper, novel chalcopyrite copper indium sulfide (CuInS2) nanocrystals (NCs) were synthesized by a simple one-pot route using the inorganic ligand [Sn(acac)2Cl2] as an auxiliary agent (capping agent and shape-control agent). Factors including reaction temperature, reaction time and amount of Sn(acac)2Cl2, that…
Direct syntheses of carbon structures including nanodiamond, microdiamond and diamond-like carbon (DLC) on silicon wafers by liquid phase electro-deposition are presented. The solution (ethanol/water) was employed as electrolyte at different concentration levels. Assays were carried out maintaining constant the electr…
Given their potential applications in electronic and optoelectronic devices and circuits, reduced graphene oxides (RGOs) have attracted considerable interest. However, more facile and environmentally friendly reduction methods, whether thermal or chemical reduction methods, still need to be further exploited. In this…
Nanoparticles play a crucial role in biomedical and sensing applications. In this paper the design of non-spherical gold nanoparticles, operating in the near infrared and visible regime, is proposed. The structures consist of metallic resonating inclusions of different shapes embedded in a dielectric environment. Diff…
Rare-earth octahedra have been previously synthesised using p-tert-butylcalix[4]arene as a cluster support. Introduction of a heteroatom bridge in the calixarene framework, with concomitant alteration to the nature of the metal binding pocket, influences lanthanide composition in the cluster.