Materials Literature
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We propose a high-transmittance multi-domain vertical alignment liquid crystal device with a protrusion structure. Disclination lines, which inevitably appear at the boundaries of domains in a multi-domain structure, can be reduced by adding a protrusion structure on the top substrate. The transmittance was improved b…
The effect of calcium stearates (CaSt 2 ) and zinc stearates (ZnSt 2 ) on polyene formation of poly(vinyl chloride) (PVC) was investigated by gel content, ultraviolet (UV)–visible, Fourier transform infrared and static stability analyses. The linear polyene sequences are preferred to form in pure PVC and the PVC/CaSt…
In this work, an atomic force microscope (AFM) is combined with a confocal Raman spectroscopy setup to follow in situ the evolution of the G-band feature of isolated single-wall carbon nanotubes (SWNTs) under transverse deformation. The SWNTs are pressed by a gold AFM tip against the substrate where they are sitting.…
The nitration of methyl benzoate is studied from a chemical and a kinetic point of view. The reaction network through which the system could evolve following the loss of thermal control or the uncorrect feed of the reagents is completely characterized. The data collected during the present investigation indicate that…
Abstract A square grain model is proposed for the calculation of the area‐specific resistance (ASR) of porous cathodes for solid oxide fuel cells (SOFCs) by means of the finite element approach. The grains and pores are represented by squares of equal side length. The grain boundaries are assumed to be thin slabs of u…
Empirical potential molecular dynamics (EPMD) simulations of 1-bar eutectic composition liquid in the system CaAl 2 Si 2 O 8 -CaMgSi 2 O 6 have been conducted using the interatomic pair-potential of Matsui (1998). Simulations using ~10 000 atoms over a wide range of conditions (r: 2200-5000 kg/m3; T: 1600-5500 K; P: 0…
Using first-principles calculations and analysis, we show that to create shallow n-type dopants in oxides, anion site doping is preferred for more covalent oxides such as SnO2 and cation site doping is preferred for more ionic oxides such as ZnO. This is because for more ionic oxides, the conduction band minimum (CBM)…
Abstract Poly(vinyl alcohol) (PVA) dissolved in ethylene glycol is subjected to microwave (MW) irradiation for 1 h to determine possible degradation. Fourier transform infrared spectroscopy results show that MW treatment produces a minor effect on the solutions. Ultraviolet–visible spectroscopy suggests that PVA could…
Abstract This study focuses on the pressure sensitivity of ethylene vinyl acetate (EVA)/polyaniline (Pani) composites prepared through in situ polymerization of aniline in solutions of insulating EVA matrix. It is found that both DC and AC resistivity of the composites decreases with the increase in Pani concentration…
Synchrotron x-ray nano-tomography was used to characterize the microstructures of multi-layer ceramic capacitors before and after sintering. 3D microstructures of the same sample were reconstructed and quantitatively analyzed. The discontinuities observed in inner electrodes were found to originate from initial hetero…
MIM [missing in metastasis; also called MTSS1 (metastasis suppressor 1)] is an intracellular protein that binds to actin and cortactin and has an intrinsic capacity to sense and facilitate the formation of protruded membranous curvatures implicated in cellular polarization, mobilization and endocytosis. The N-terminal…
We prove that the two-dimensional Schrödinger operator with a potential having the symmetry of a honeycomb structure has dispersion surfaces with conical singularities ( <italic>Dirac points</italic> ) at the vertices of its Brillouin zone. No assumptions are made on the size of the potential. We then prove the robust…
The heterostructural film combining multiferroic CoFe2O4/Pb(Zr0.52Ti0.48)O3 bilayer with semiconductor ZnO layer was prepared. Three-state resistive switching was demonstrated by time-dependent current measurements under different stimuli combination of voltage pulse and magnetic bias. The asymmetry diodelike current-…
Abstract Gelatin (GE) nanofiber suspensions prepared by the extrusion of an immiscible polymer solution blend were cast into nanofibrous membranes. An organic chemical capable of generating radicals under photoexposure, anthraquinone‐2,6‐disulfonic acid (AQS), was assembled layer by layer (LBL) onto the gelatin nanofi…
Selection of spinning preparation parameters which affects properties of the final yarn and subsequent process is a multicriteria decision-making problem. Different statistical methods and multicriteria approaches have been used to solve such kind of problems. This paper presents a new multicriteria decision-making te…
The synthesis of ball-type dinuclear Zn(II) phthalocyanine containing four 4,4′-(9H-fluorene-9,9-diyl)diphenol substituents at the non-peripheral position is presented. The structure of the synthesized compound was characterized using elemental analyzes, and UV-vis, FT-IR, 1 H NMR and mass spectroscopies. The Φ F valu…
This paper investigates the crystal structure and optical absorption of Ge-doped Nb-oxide (Nb-Ge-O) thin films prepared by RF sputtering. A wide-gap material, Nb2O5, is selectively produced as a matrix to disperse Ge nanocrystals through compositional optimization with Ge chip numbers and oxygen ratio in argon. The op…
First-principles calculations based on density-functional theory (DFT) and low-T IR spectroscopy were performed to gain more insight into the structure of the so-called 3.65 Å phase, a high-pressure phase of the composition MgSi(OH) 6 . DFT-calculations predict a monoclinic symmetry with ordered sixfold-coordinated Mg…
We report parallel and perpendicular magnetostriction measurements performed in polycrystalline Ni2MnGa to shed light on the magnetoelastic coupling, responsible for the ordinary magnetostriction, and giant magnetic field-induced strains (MFIS). Parallel magnetostriction is negative while its perpendicular component s…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Philipp Kröger, Marcel Ruth, Nils Weber, Cedrik Meier; Carrier localization in ZnO quantum wires.…