Materials Literature
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Explorations of the A(1+)-RE(3+)-Mo(6+)-O(2-) (A(1+) is an alkali metal cation, RE(3+) is a rare-earth metal cation) quaternary systems prepared by the high-temperature solution growth method led to the title structure, sodium erbium bis-(molyb-date), NaEr(MoO(4))(2). It is isostructural to the scheelite structure (Ca…
OBJECTIVE: Qin Kai Ling (QKL) injection, which is based upon the traditional Chinese medicine formulation 'An Gong Niu Huang Wan', is widely used in treatment of many diseases. This review aims to assess the safety of QKL. METHODS: We searched Chinese databases CNKI and VIP for articles published between January 1987…
Abstract Semicrystalline poly(bis‐trifluoroethoxymethyl)oxetane, P(B‐3FOx), was prepared by cationic ring‐opening polymerization at −5 °C with M n up to 21 kDa. Differences in cooling rates from the melt have substantial effects on crystal phase, percent crystallinity, surface topography, and wetting behavior. DSC and…
Domain switching in the charge/orbital-ordered state of ${\text{La}}_{0.5}{\text{Sr}}_{1.5}{\text{MnO}}_{4}$, which can be manipulated by applying an electric field, was studied by in situ transmission electron microscopy. Dark-field images revealed the formation of micrometer-scale charge/orbital-ordered domains on c…
Abstract A chelating polymer, poly(2,4‐dihydroxy benzophenone hydrazone–formaldehyde) [poly(DHBPH–F)], was synthesized by the polycondensation of 2,4‐dihydroxy benzophenone hydrazone with formaldehyde in the presence of oxalic acid as a catalyst. Poly(DHBPH–F) was characterized by Fourier transform infrared and 1 H‐NM…
A computer-controlled procedure is outlined here that first determines the position of the amorphous-crystalline interface in an image. Subsequently, from a time series of these images, the velocity of the crystal growth front is quantified. The procedure presented here can be useful for a wide range of applications,…
Abstract A set of isotactic propylene copolymers with either 1‐hexene or 1‐octadecene were synthesized using a metallocene catalyst, and their nanocomposites with 5 wt.‐% of clay and 15 wt.‐% of compatibilizer were prepared and characterized. Clay intercalation and dispertion depend on the comonomer content in the mat…
ZnO double heterojunction structure was grown by molecular beam epitaxy. 100 nm MgZnO/ZnO/MgZnO well was inserted between Ga-doped ZnO and Sb-doped ZnO layers. X-ray diffraction spectrum confirmed the preferential growth along c-direction and secondary ion mass spectroscopy measurements showed a clear double heterojun…
Au/Ag-Nanopartikellegierungen zeigen bei Anregung mit einem Nahinfrarot-Femtosekundenlaser (1290 nm) eine helle Drei-Photonen-Lumineszenz (linkes Bild) mit einer um eine Größenordnung höheren Intensität als reine Au- oder Ag-Nanopartikel. Weil die Anregung außerhalb des Plasmonenresonanzbereichs liegt, gelingt die bio…
Diffraction gratings produce self-images in the near field. Defects on the surface of the grating may occur due to the manufacturing process. These devices are often placed in dirty industrial environments. Dust particles or drops of liquid can be deposited over their surface. In this work, we analyze the effect of su…
A shift of ferroelectric (TC) and magnetic (TN) phase transitions in the (x)PbZr0.53Ti0.47O3–(1 − x)Mn0.4Zn0.6Fe2O4 (PZT–MZF) particulate ceramic composite depending on a volume ratio of the MZF ferrite and the PZT ferroelectric, respectively, has been studied. It is established that one reason for the TC and TN shift…
Abstract The oxidation resistances of different kinds of SiC‐based laminates are compared. The materials under investigation are produced by tape casting of green ceramic sheets, followed by stacking of the sheets in a multilayer structure and laminate consolidation by de‐binding and sintering. Three kinds of specimen…
A simple and facile method has been developed to produce surface-enhanced Raman scattering (SERS) active surfaces. Tollen's reagent was used to coat silver onto the surface of glass fiber filters. Using a Fourier transform (FT) Raman instrument, strong surface-enhanced Raman signals have been observed for L-phenylalan…
Two model drug eluting stents of poly(lactic acid) (PLA)/everolimus and poly(ethylene vinyl alcohol) copolymer (EVAL)/everolimus have been investigated using complementary surface analysis techniques including AFM, XPS, and ATR-IR to assess their structure and its relation to drug release. Different surface morphologi…
Abstract In order to obtain polyamides with enhanced solubility and processability, as well as good mechanical and thermal properties, several novel polyamides containing sulfone‐ether linkages and xanthene cardo groups based on a new diamine monomer, 9,9‐bis[4‐(4‐aminophenoxy)phenyl]xanthene (BAPX), were investigated…
Abstract The photoresponsive structures prepared by magnetron sputtering of ZnO on p‐Si substrates followed by vacuum evaporation of semitransparent Ni film on ZnO surface are investigated. The obtained Ni/n‐ZnO/p‐Si structures show high sensitivity that sharply increases with increase in applied voltage. Under a bias…
Abstract The stability of hierarchical lamellar morphologies formed in ABC star triblock copolymers, is studied using the self‐consistent mean‐field theory. The hierarchical lamellae consist of repeating period of the largest block A‐formed layer and B/C coformed layer where B and C domains are arranged alternatively.…
We report the synthesis and characterization of copper-indium binuclear I-III complexes composing the series (Ph(3)P)(2)CuIn(SEt)(x)Cl(4-x) (1-5; 0 < or = x < or = 4). Members of the series, which are prepared by variations in the stoichiometry, are compared in terms of their solid-state structures, spectroscopic feat…
Abstract The feedback control policy of the reactive crystallization process is studied. A concentration of a crystallizing compound is used to compute the feedback in the closed‐loop control of semi‐batch precipitation. The pH is used as a second feedback value, and the dynamic change of the set value is based on the…
Abstract A two‐dimensional (2D) Mo photonic crystal (PhC) surface is proposed for high‐temperature solar‐selective absorber. The influence of PhC structural parameters on the reflectance between 0.3 and 12 µm is studied by the rigorous coupled‐wave analysis (RCWA) method. Simulation results show that such a surface wi…