Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The structure, the ionic transport properties, and the dynamics of long-wavelength charge-density fluctuations, for two polarizable point dipole models of molten NaI, have been studied by molecular dynamics simulations. These models are based on a rigid ion potential to which the induced dipole polarization of the ani…
The aim of this paper is to review and to preview some selected topics of crystal nucleation in colloidal suspensions. First we discuss how the structure of critical nuclei can be calculated by computer simulations, in particular how linear shear flow affects the size and shape of the critical nuclei. Second, we previ…
We report an optical spectroscopy study on the newly discovered superconductor Cu0.07TiSe2. Consistent with the development from a semimetal or semiconductor with a very small indirect energy gap upon doping TiSe2, it is found that the compound has a low carrier density. Most remarkably, the study reveals a substantia…
Abstract For the size reduction of electric power equipment, the electric field stress around solid insulators is to be carefully designed. This concern will be solved by the application of FGM (Functionally Graded Materials). In this paper, we investigated an application feasibility of FGM from numerical simulation,…
We have used phase field simulations to study elastic stress-driven phase inversion in which an initial microstructure with a minority phase embedded in a majority phase evolves to one in which the latter becomes embedded in the former. Such phase inversion is possible if the majority phase is elastically stiffer than…
In this article biaxial constrained recovery in a thick-walled shape memory alloy (SMA) ring with a rectangular cross-section is modeled using the theory of generalized plasticity, which is developed by Jacob Lubliner and Ferdinando Auricchio. As a mechanical obstacle that delays free recovery in a SMA ring, a steel r…
Self-crack-healing by oxidation of silicon carbide (SiC) is the most effective method to improve the reliability of ceramics, as this eliminates surface cracks completely. Furthermore, if the service condition corresponds to the state under which self-crack-healing can occur, cracks introduced during service can be co…
Flash-cooling of macromolecular crystals often compromises diffraction quality by increasing the mosaicity. In some cases, cycling the crystal between low temperature (LT) and room temperature (RT) can reverse this increase in mosaicity. Previous studies of RT/LT cycling have focused on the quality of the crystal as i…
Abstract Two pyrrole‐deriviatized carboxylic acids [ L 1 = 1‐methylpyrrole‐2‐carboxylate] and [ L 2 = N ‐methyl‐3‐indoleglyoxylate] were used as ligands to prepare six lanthanide coordination compounds [( L 1 ) 3 Ln] n (Ln = Eu, 1 ; Gd, 2 ; Tb, 3 ) and [( L 2 ) n Ln(NO 3 )(MeOH) 2 ] n (Ln = Eu, 4 ; Gd, 5 ; Tb, 6 ). Th…
Abstract The morphology transitions in AB diblock and ABA triblock copolymers confined between flat and curved surfaces were investigated by MC simulations. Upon variation of the extent of frustration between thickness d and bulk lamellae period L 0 , parallel and vertical or distorted vertical lamellar structures app…
Magnetoelectric CoFe(2)O(4)-Pb(Zr,Ti)O(3) nanostructured films with various phase connectivity patterns were prepared by a pulsed laser deposition method. It was found that the microstructure as well as the phase connectivity pattern of the film varied remarkably with the variation of phase content ratio. All composit…
Unter extremen Bedingungen konnte ein Hochdruckborat synthetisiert werden, in dem alle BO4-Tetraeder eine gemeinsame Kante zu einem zweiten BO4-Tetraeder aufweisen (siehe Strukturausschnitt).
A rapid, sensitive, low-cost device to detect trimethylamine was presented in thispaper. The preparation of water soluble polyaniline was firstly studied. Then the polyanilinewas characterized via Fourier transform infrared spectroscopy (FTIR), UV-visiblespectroscopy and scanning electron microscopy (SEM). Based on th…
Diagnose und Behandlung in einem: Multifunktionelle magnetisch-polymere Nanohybride (MMPNs) für die spezifische MRI-Detektion und Behandlung von Brustkrebs wurden aus hoch empfindlichen MnFe2O4-Nanokristallen, chemotherapeutischen Wirkstoffen und amphiphilen Blockcopolymer-Kapseln hergestellt. Gezeigt sind das TEM-Bil…
Self-assembled peptide nanotubes are unique, newly developed nano-structures which exhibit many exciting properties that may establish them as preferred nano-technological building blocks, especially for nano-fluidics, biological sensing and self-assembly applications. Integrating peptide nanotube materials in standar…
Abstract A precursor polymer PEO‐ b ‐PEMA that contains anilino moieties is synthesized from EPAEMA by ATRP by using a PEOBr macroinitiator and CuBr/HMTETA catalyst system. The aminoazobenzene‐containing block copolymer PEO‐ b ‐PCN is obtained by the azo‐coupling reaction between PEO‐ b ‐PEMA and the diazonium salt of…
Abstract TGA has been used to study the thermal degradation of PS in atactic (aPS), syndiotactic (sPS), and isotactic (iPS) forms. Thermal stability of sPS is similar to that of aPS, whereas iPS degrades at a notably higher temperature. TGA‐FT‐IR data do not show any obvious difference in the degradation products of t…
The restrictions on the coefficients describing physical effects depend on the orientation of the symmetry elements of the crystal or quasicrystal with respect to the Cartesian coordinate system employed. They are given for the piezoelectric effect of second order in stress or strain for all the orientations that can…
Abstract Three new heterobimetallic 1D coordination polymers have been obtained by assembling the [Ni(bpca) 2 ] complex, as a building block, with lanthanide cations: [{Ln(O 2 NO)(H 2 O) 3 }{Ni(bpca) 2 }](NO 3 ) 2 · 3H 2 O (Ln Gd 1 ; Tb 2 ; Dy 3 ). The three compounds are isostructural and their structure consists of…
Intrinsic defects in zigzag BN nanotubes, including single vacancy, divacancy, and Stone-Wales defects, are systematically investigated using density functional calculation. It is found that the structural configurations and formation energies of the topological defects in considered tubes are dependent on tube diamet…