Materials Literature
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A density functional theory is used to investigate adsorption of colloids on the surfaces grafted by polymers of different architectures, including linear, star, branched, and dendritic structures. In order to calculate the direct bonding connectivity integral, a new numerical algorithm is proposed for polymers with c…
CdSe quantum dots (QDs) are known to exhibit both power-law blinking dynamics and a dark fraction. A complete description of the mechanistic origins of these properties is still lacking. We show that a change in the pH of the QD environment systematically changes both the dark fraction and the blinking statistics. As…
Titanium-containing hexagonal mesoporous silicas (Ti-HMS) with wormhole structure and Si/Ti molar ratios ranging from 10 to 40 have been prepared by using long-chain alkyl primary amines as template agents. The Ti-HMS supported Au catalyst (Au/Ti-HMS) was obtained by a deposition−precipitation method for direct gas-ph…
Vertical arrays of crystalline zinc oxide (ZnO) nanowires grown on various substrates find applications in dye-sensitized and hybrid organic/inorganic bulk-heterojunction solar cells. The ability to grow dense nanowires at high rates and the fundamental understanding of the growth process are important for these appli…
Seeding cells efficiently and uniformly onto three-dimensional scaffolds is a key element for engineering tissues, particularly when only a low-number of cells is available for tissue repair and regeneration. The aim of this study was to evaluate three seeding techniques on two biocompatible scaffolds in vitro using c…
Human tympanic membrane cells (hTMCs), harvested from tympanic membrane (TM) explants, were grown in culture and then seeded on membranes prepared from silkworm (Bombyx mori) silk fibroin (BMSF) and on tissue-culture plastic membranes (PET). Fibroin was isolated from silk cast into membranes with a thickness of 10-15…
X-ray resonant magnetic scattering studies of rare-earth magnetic ordering were performed on perovskite manganites $R{\text{MnO}}_{3}(R=\text{Dy},\text{Gd})$ in an applied magnetic field. The data reveal that the field-induced threefold polarization enhancement for $\mathbf{H}\ensuremath{\parallel}a(H\ensuremath{\appr…
We propose general analytical approach for the description of size effect influence on polarization and dielectric susceptibility in ferroelectric nanosystems based on the two-parametric direct variational method and Landau–Ginzburg–Devonshire phenomenology. The essence of the approach is to solve Euler–Largange bound…
Magnetotransport of natural graphite and highly oriented pyrolytic graphite has been measured at mK temperatures. Quantum oscillations for both electron and hole carriers are observed with an orbital angular momentum quantum number up to N approximately 90. A remarkable agreement is obtained when comparing the data an…
Abstract In recent years TPS has attracted more and more research interest as a promising replacement for commodity polymers in some applications. In this paper, a novel manufacturing technology to produce PLA fiber reinforced biodegradable TPS composite, and the microstructure and tensile properties of the composite,…
We report high resolution angle-resolved photoemission spectroscopy (ARPES) studies of the electronic structure of ${\text{BaFe}}_{2}{\text{As}}_{2}$, which is one of the parent compounds of the Fe-pnictide superconductors. ARPES measurements have been performed at 20 and 300 K, corresponding to the orthorhombic antif…
This paper reports recent experimental findings and rheological modeling on chemically treated single-walled carbon nanotubes (CNTs) suspended within an epoxy resin. When a CNT suspension was subject to a steady shear flow, it exhibited a shear-thinning characteristic, which was subsequently modeled by a Fokker–Planck…
Abstract Crystal structures of Bi 1– x Ln x FeO 3 systems (Ln = La, Nd, Eu) are studied using X‐ray and neutron diffraction, magnetization measurements as well as electron microscopy. It was shown that the unit cell of the Bi 1– x La x FeO 3 system is described with the R3c space group in the concentration interval 0…
In this paper, we report novel ferroelectric properties of a new form of ice inside single-walled carbon nanotubes (SWCNTs). These are called "ice nanotubes" (ice NTs) and they consist of polygonal water rings stacked one-dimensionally along the SWCNT axis. We performed molecular dynamics (MD) calculations for the ice…
The thermal expansion properties of two isostructural zinc dicyanometallates that crystallize with and without the inclusion of a weakly interacting secondary crystalline phase have been investigated using variable temperature single-crystal and powder X-ray diffraction. The guest-free Zn[Au(CN)(2)](2) framework was f…
A technique for creating devices for ultrathin layer chromatography (UTLC) using an electrospinning method is described. The devices use a nanofibrous stationary phase with fiber diameters that are 400 nm. Separations of mixtures of laser dyes and mixtures of steroidal compounds were performed to illustrate the capabi…
Bis- and trisoxazolines (BOX and trisox), containing a linker unit in the ligand backbone that allows their covalent attachment to carbosilane dendrimers, have been employed as polyfunctional ligands for recyclable Cu(II) Lewis acid catalysts that were immobilised in a membrane bag. The oxazolines contained an alkynyl…
Experimental solubilities of three benzodiazepines (chlordiazepoxide, diazepam, and lorazepam) in ethanol + water mixtures at 303.2 K are reported. The solubility of drugs was increased with the addition of ethanol and reached the maximum value of a volume fraction of 90 % of ethanol. The Jouyban−Acree model was used…
Self-assembled highly crystalline ZrO 2 nanoparticles with mesoscopic ordering have been synthesized by a simple chemical process, evaporation-induced self-assembly (EISA), in the presence of an amphiphilic block copolymer, pluoronic F127, as template. The mesoscopic assembly of the ZrO 2 nanoparticles and the crystal…
A simple and versatile approach to miktoarm co- and terpolymers from carbonate functional oligomers is described. The key building block employed is a carboxylic acid functional cyclic carbonate, derived from 2,2-bis(methylol)propionic acid, that was readily coupled to a hydroxyl functional monomethylether poly(ethyle…