Materials Literature
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A one-step strategy of magnetron sputtering deposition with dynamic regulation of sputtering atmosphere was developed to prepare α-Ta/graded Ta(N)/TaN multilayer films on the Si substrate. The evolution of Ta clusters shows a significant effect on the crystal structure of the Ta film. The experimental results validate…
The structure of the χ-AlPdRe phase was determined by single crystal X-ray diffraction: space group P31c (No.159), a = 1.23744(4) nm, c = 2.7489(1) nm, V = 3.6453(2) nm3, atoms/cell = 230, F(000) = 5138, µ = 20.199 cm−1, Dcalc = 5.29 Mg m−3, R(F) = 0.068 for 2894 observed reflections measured by Mo Kα radiation (λ = 0…
An electrostatic-actuated suspended bridge structure composed by single-crystalline silicon carbide (SiC) is fabricated. The structure is entirely made of homoepitaxially grown single-crystalline 4H-SiC. Electrical isolation between the suspended bridge and the base plate is established with a pnp junction formed by m…
Ultrasmall lysozyme microcrystals are grown by classical hanging-drop vapor diffusion and by its modification using a homologous protein thin-film template displaying long-range order. The nucleation and growth mechanisms of lysozyme microcrystals are studied at the thin lysozyme film surface using a new in situ µGISA…
A novel graphene transistor architecture is reported. The transistor has a U-shaped geometry and was fabricated using a gallium focused ion beam (FIB). The channel conductance was tuned with a back gate. The Ion/Ioff ratio exceeded 105.
Abstract A zinc/silicon dioxide composite film has been electrodeposited on carbon steel surface via adding tetraethylorthosilicate (TEOS) in zinc nitrate solution. The advantage of this method is that the metal/inorganic composite film can be fabricated without adding solid particles in solution. Polarization curve r…
The promotion of CO oxidization and inhibition of NO formation by gaseous iron species were analyzed using the Sandia SENKIN program. It is shown that the relative ratio of CO oxidization dramatically varies with combustion time at early burning stage in the presence of iron species, and all peak values are greater th…
The conductivity mechanism of three crystalline diphosphates of (AI2BIIP2O7) type, Na2CaP2O7, Na2CuP2O7 and K2MnP2O7 has been investigated using combined complex impedance and modulus formalisms. Their conductivity measurements showed that Na2CaP2O7 and Na2CuP2O7 can be considered as pure ionic conductors, while K2MnP…
Investigation on compaction and decompaction of polymers is very important since it is a fundamental problem in polymer physics. With the aids of atomic force microscope (AFM) and dynamic light scattering (DLS) measurements in this contribution, the temperature-dependent compaction/decompaction transition process of w…
Abstract AZ91D magnesium alloy was treated by the alternating voltage (AV) treatment technique. The optimal AV‐treatment parameters of the alloy were determined by orthogonal experiments. Polarization curve, electrochemical impedance spectroscopy (EIS), and scanning electrochemical microscopy (SECM) were used to under…
The finite element method (FEM) was used to solve the time-harmonic Maxwell equations to calculate full infrared (IR) absorption spectra of organic substances near particles adsorbed to a silicon/air interface mimicking a surface-enhanced infrared absorption spectroscopy (SEIRAS) experiment in internal reflection geom…
Nanocomposites of cross-linked methacrylate polymers with silver nanoparticles have been synthesized by coupling photoinitiated free radical polymerization of dimethacrylates with in situ silver ion reduction. A polymerizable methacrylate bearing a secondary amino functional group was used to increase the solubility o…
Ohne oder fast ohne Agglomeration werden fluoreszierende Nanodiamanten (FNDs), an die Rinderserumalbumin (BSA) oder α-Lactalbumin nichtkovalent gebunden ist, in einem Puffer dispergiert. Sie können als photostabile Fluoreszenzmarker in Zellen bei der hochauflösenden Bildgebung durch STED-Mikroskopie dienen (siehe das…
Abstract Chitosan/starch blends represent an interesting alternative for the preparation of biocompatible drug delivery systems, packing materials and edible films. This paper reports on the effects of starch gelatinization and oxidation on the rheological behavior of chitosan/starch blends. The results show that the…
Abstract The absorption of hydrogen by NdFeB magnet has been investigated by using the electrochemical charging technique at constant cathodic current density I c ranging from 0 to 4 mA/cm 2 . Open circuit potential measurements (OCP) and polarization curves were carried out to study the corrosion behavior of the char…
Abstract Two triazole derivatives [1‐phenyl‐2‐(5‐(1,2,4) triazol‐1‐ylmethyl‐(1,3,4) oxadizaol‐2‐ylsulphanyl)‐ethanone (PTOE) and 2‐(4‐tert‐butyl‐benzylsulphanyl)‐5‐(1,2,4) triazol‐1‐ylmethyl‐(1,3,4) oxadiazole (TBTO)] were synthesized as new corrosion inhibitors for the corrosion of mild steel in 1 M hydrochloric acid…
Abstract The mixed rare earth oxide (Dy 1‐ x Er x ) 2 O 3 (0.0 ≤ x ≤ 1.0) were synthesized by a sol–gel process. X‐ray and neutron diffraction data were collected and crystal structure and microstructure analyses were performed using Rietveld refinement method. All samples were found to have the same crystal structure…
Abstract In this paper, a protective coating scheme was applied for the corrosion protection of AZ91D magnesium alloy. Electroless Ni coating (EN coating) as bottom layer, electrodeposited Ni coating (ENN coating), and silane‐based coating (ENS coating) as top layer, respectively, were successfully prepared on AZ91D m…
LiGaSe<sub>2</sub> and LiInSe<sub>2</sub> are promising nonlinear crystals for conversion of laser radiation to the mid-IR spectral range which are transparent down to the visible and UV. We successfully grew a new mixed crystal as a solid solution in the system LiGaSe<sub>2</sub> - LiInSe<sub>2</sub>, with a composit…
The structures of new oxaindane spiropyrans derived from 7-hydroxy-3',3'-dimethyl-3'H-spiro[chromene-2,1'-isobenzofuran]-8-carbaldehyde (SP1), namely N-benzyl-2-[(7-hydroxy-3',3'-dimethyl-3'H-spiro[chromene-2,1'-isobenzofuran]-8-yl)methylidene]hydrazinecarbothioamide, C(27)H(25)N(3)O(3)S, (I), at 120 (2) K, and N'-[(7…