Materials Literature
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The luminescence spectra of laser-induced cavitation bubbles near rigid boundaries are measured for various relative distances between the bubble and the boundaries. We find that the luminescence spectra of bubbles collapsing near a single boundary consist only of a blackbody continuum. Luminescence from bubbles colla…
A family of organic and metal−organic materials based on chiral vicinal bis(amide) structures are developed. Subtle molecular structure variations give rise to polar and helical organizations in crystals of the two basic compounds N, N ‘-bis(benzoyl)-(1 R,2 R )-diaminocyclohexane and N, N ‘-bis(isonicotinoyl)-(1 R,2 R…
The electronic and structural properties of an Mn:Ge(111) ordered interface produced by annealing Mn multilayers evaporated on a Ge(111) single crystal have been investigated. After annealing above $300\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, the surface always showed a $(\sqrt{3}\ifmmode\times\else\texttimes\fi{}\sqrt…
Abstract Polybutadiene rubber (BR)/clay/dimethyl dihydrogenatetallow ammonium chloride (DDAC) composites were prepared by a new preparation method named in situ organic modification. That is, BR, pristine clay, and quaternary ammonium salt were directly melt‐mixed without the usual pretreatment of the pristine clay wi…
Abstract The structural, electronic and optical properties of the antifluorite semiconductors Mg 2 X (X = Si, Ge, Sn) have been studied using the full potential linearized augmented plane wave (FPLAPW) method. For treating the exchange‐correlation term, the local density approximation (LDA) has been chosen. The total…
The influence of clothing material on thermal responses of the human body are investigated by using an integrated model of a clothed thermoregulatory human body. A modified 25-nodes model considering the sweat accumulation on the skin surface is applied to simulate the human physiological regulatory responses. The hea…
Photoinduced electron transfer has been observed in a molecular triad, consisting of a porphyrin (P) covalently linked to a tetrathiafulvalene (TTF) and a fullerene derivative (C(60)), in the different phases of the liquid crystal E-7 and in a glass of 2-methyltetrahydrofuran (2-MeTHF) by means of time-resolved electr…
Ar ion beam etching and inductively coupled SF6 and C4F8 plasma-etching processes have been employed to fabricate free standing membrane from the heteroepitaxial La1−x(Sr,Ca)xMnO3(50nm)∕Bi4Ti3O12(100nm)∕CeO2(40nm)∕YSZ(30nm) film structure pulsed laser deposited on Si(001) wafer. We demonstrate feasibility to use epita…
Abstract Solid oxide fuel cells (SOFC) are receiving an increasing level of attention for both small‐ and large‐scale applications due their high fuel flexibility compared to other types of fuel cells. This article reviews recent work in SOFC materials research, with an emphasis on anodes that can directly utilize hyd…
The present work addresses the problem of a self-consistent-field (SCF) description of a specified polymer melt/solid substrate interfacial system. Key points of the employed method are the coarse-grained representation and the numerical treatment of the continuous-space SCF theory. Compared to other works on polymer…
A wedge-shaped structure made of split-ring resonators (SRR) and wires is numerically simulated to evaluate its refraction behavior. Four frequency bands, namely, the stop band, left-handed band, ultralow-index band, and positive-index band, are distinguished according to the refracted field distributions. Negative ph…
Biodegradable and biocompatible amphoteric poly(amido-amine) (PAA)-based hydrogels, containing carboxyl groups along with amino groups in their repeating unit, were considered as scaffolds for tissue engineering applications. These hydrogels were obtained by co-polymerising 2,2-bisacrylamidoacetic acid with 2-methylpi…
Organized multiporphyrin arrays were developed on the conductive surface by a novel coordination-directed molecular architecture aiming at efficient photoelectric conversion. The basic strategy employs the mutual coordination of two imidazolylporphyrinatozinc(II) units to form a cofacial dimer. Thus, meso,meso-linked…
Hexagonal mesoporous materials with wormhole framework structures having Si/Ti molar ratios of 80, 40, and 20 (Ti-HMS) were used as supports of CoMo HDS catalysts. The supports and catalysts were characterized by N 2 adsorption−desorption ( S BET ), X-ray diffraction (XRD), UV−vis diffuse reflectance spectroscopy (DRS…
Abstract This paper deals with the structural Raman‐active and the disorder‐induced TO and LO Raman modes in Sr 1− x Ca x TiO 3 (SCT) ceramics. Spectra were recorded at ambient pressure in a wide range of temperatures from 8 K up to ≈500 K. The chemical composition (x) was chosen so as to investigate the phase boundar…
Fibers of highly oriented Si nanowires (SiNWs) were formed by drawing from a condensed SiNW suspension. The SiNW fiber, excited at 514.5nm, produces a strong photoluminescence (PL) at room temperature. The PL spectrum shows three bands at 565–580, 605–640, and 680–690nm, respectively, which are consistent with the PL…
The growth kinetics of one-dimensional single-crystalline KNbO(3) nanostructures (nanowires and nanofingers, the latter understood as defective nanowires) prepared by hydrothermal processing routes has been theoretically studied. A model taking into account the cube-based morphology of the nanostructures, their defect…
Dramatic relaxation enhancements of L-lactate resonances have been observed upon formation of ternary adducts with Gd(III) complexes of heptadentate DO3A and DO3A-like ligands (DO3A = 1,4,7,10-tetraazaciclododecane-1,4,7-triacetic acid). Detailed 1H and 17O NMR relaxometry investigations allow us to obtain structural,…
Abstract The zero‐dimensional polymer [Pb 6 (μ 2 OOCCH=CHFc) 2 (μ 3 ‐OOCCH=CHFc) 2 (μ 2 ‐η 2 ‐OOCCH=CHFc) 2 (η 2 ‐OOCCH=CHFc) 2 (μ 4 ‐O) 2 ] ( 1 ), the one‐dimensional chain polymers [Pb(η 1 ‐μ 2 ‐OOCCH=CHFc) 2 (phen)] n (phen = phenanthroline; ( 2 ), {[Cd(μ 2 ‐η 2 ‐OOCCH=CHFc)(η 2 ‐OOCCH=CHFc)(H 2 O) 2 ](H 2 O) 4 } n…
Abstract Three new iron( III ) compounds of formula [Fe(salten)Mepepy][M(dmit) 2 ] · CH 3 CN (M = Ni, Pd, Pt; H 2 salten = 4‐azaheptamethylene‐1,7‐bis(salicylideneiminate); Mepepy = 1‐(pyridin‐4‐yl)‐2‐( N ‐methylpyrrol‐2‐yl) ethane; dmit 2– = 1,3‐dithiole‐2‐thione‐4,5‐dithiolato) have been synthesised and the crystal…