Materials Literature
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Abstract We investigated the chemical reactivities of (La0.7Sr0.2Ba0.1)ScO3−δ (LSBS) and LaScO3 powders and Pt foil as functions of reaction temperature, T, oxygen partial pressure, P(O2), and reaction time, t. The LSBS powder showed a maximal Pt content of ca. 33 mg (ca. 3 wt %) under the conditions T = 1573 K, P(O2)…
Purpose The purpose of this paper is to study the effect of gravity on the general model of the equations of generalized magneto‐thermo‐microstretch for a homogeneous isotropic elastic half‐space solid whose surface is subjected to a mode‐I crack. The problem is in the context of the Green and Naghdi theory of both ty…
Ordered mesoporous anatase films can be prepared at low temperature by evaporation-induced self-assembly of a microemulsion used to preform nanocrystals of titania. Here, we study the impact of storage time of the reaction solution on the structure and photocatalytic properties of such films. The formation of anatase…
Maltooligosyltrehalose trehalohydrolase (MTHase) catalyzes the release of trehalose by cleaving the α-1,4-glucosidic linkage next to the α-1,1-linked terminal disaccharide of maltooligosyltrehalose. Computer simulation using the hydrogen bond analysis, free energy decomposition, and computational alanine scanning were…
Abstract We describe how the morphology, photoluminescence (PL), and electroluminescence properties of 2,2′,7,7′‐tetrakis(pyren‐1‐yl)‐9,9′‐spirobifluorene (TPSBF) are related to its film thickness and how, under optimized conditions, the three main PL emissions constitute a form of white light. We fabricated high‐brig…
This paper presents the design and measurement results of intrinsically switchable interdigitated contour mode resonators based on barium titanate (BTO) thin films. The resonators have lithographically defined interdigitated electrodes that determine their resonance frequencies. The BTO thin film exhibits electrostric…
We report here the on-axis measurement of time-resolved spatial characterization of refractive fringes due to nanosecond-laser-induced shock waves in liquid water. The complex shadowgraphic fringes due to interference of multiple shock waves observed in the transverse measurements are completely avoided in the on-axis…
We report optical properties of bulk Cu2GeSe4 single crystal. X-ray powder diffraction measurement shows that this ternary compound forms in the cubic crystal structure and its lattice parameter is 5.5815(3) Å. Spectroscopic ellipsometric measurements are performed from 1.0 to 8.5 eV with the crystal at room temperatu…
In RAFT miniemulsion polymerization, the slow fragmentation (SF) model reveals essentially the same polymerization rate as the corresponding bulk polymerization, while the intermediate termination (IT) model shows a drastic rate increase in a wide droplet size range, and thereby, two controversial models for the RAFT…
We have developed the in situ fibrillation of κ-casein, employed as amyloid precursor, within multilayer films consisting of κ-casein and poly(acrylic acid) (PAA) prepared by the layer-by-layer (LbL) deposition. The fibrillation of κ-casein within the multilayered films is strongly dependent on the extent of intermole…
In this paper, a coupled system of two parabolic initial-boundary value problems is considered. The system presented is a one-dimensional version of the Kobayashi-Warren-Carter model of grain boundary motion [15,16], that is derived as a gradient system of a governing free energy including a weighted total variation.…
Energy levels and formation energies of point native defects, i.e., of vacancies, interstitials, and cation antisites, in ZnRh2O4 were analyzed by first principles density-functional theory-generalized gradient approximation calculations. There are two dominant defects, the Zn vacancy and the ZnRh antisite, which are…
Dinitrotoluene (2,4-DNT) is a decomposition product of TNT with a higher vapor pressure and thus has been used for detecting explosives. In particular, solid-state gas sensors based on TiO 2 have shown promising properties for sensing DNT. However, the adsorption of DNT on TiO 2 has not been understood well at the mol…
Formation dynamics of intramolecular excimer in dioxa[3.3](3,6)carbazolophane (CzOCz) was studied by time-resolved spectroscopic methods and computational calculations. In the ground state, the most stable conformer in CzOCz is the anti-conformation where two carbazole rings are in antiparallel alignment. No other iso…
The optical absorption properties of a-Si:H have acquired much attention in solar cell(SC) research. In this paper, we studied enhancement of light absorption in the a-Si:H(10%H) SCs with thicknesses from 31.25nm to 2μm and with nano textures of the column-shaped nanohole (CLNH) array and of the cone-shaped nanohole (…
In this paper, the slanting silicon nanohole (SiNH) structure is systematically designed and analyzed by simulation using the finite-element method. The slanting angle of the SiNH structure is fixed at 40° based on the Si(111) wafer. The impact of the SiNH diameter (D) and structural periodicity (P) on the light absor…
The superconducting properties of the noncentrosymmetric superconductor LaPt3Si were investigated by \(\mu\)SR spectroscopy. Within experimental accuracy, spontaneous internal fields were not observed in the superconducting phase by zero-field \(\mu\)SR experiments. Transverse-field \(\mu\)SR experiments revealed the…
Modification of photoluminescence (PL) and optical properties of ZnSe:Cr crystals caused by annealing in medium of Zn or Se vapors are investigated. Possibility to modify the intensity of infrared (IR) impurity PL (∼1 µm and 2 µm) and optical absorption spectra by several orders of magnitude, reversibility of the obse…
Methods to simultaneously optimize carrier collection and light in-coupling in semiconductors are important for developing low-cost, high-efficiency photovoltaics and photoelectrodes. We anodically etched nanostructures into planar (100) n-GaAs wafers with different bulk minority carrier diffusion lengths L(D). The st…
Two donor–acceptor copolymers (P1 and P2) containing isoindigo as the acceptor unit and the benzodithiophene and bisthiophene‐dithieno[3,2‐b:2′,3′‐d]‐pyrrole as the donor unit have been designed and synthesized by the Pd‐catalyzed Stille coupling reaction. The copolymers show broad and flat absorption, exhibit good so…