Materials Literature
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Mesoporous silica can be used as a nanoreactor for liquid−liquid biphase reaction without any phase transfer reagent and organic cosolvent. High conversions (up to 89%) are achieved with low catalyst loading. This is attributed to the amphiphilic mesochannels, which can provide suitable accommodations for both hydroph…
A novel biodegradable stent, made of chitosan films cross-linked with an epoxy compound, with a shape-memory property was developed. To reduce their crystallinity, glycerol and poly(ethylene oxide) were blended in the chitosan films. The mechanical properties of the prepared stent were studied using a commercially ava…
Using a predesigned Schiff-base tripodal ligand, a heptanuclear CuII-GdIII cluster with a spin ground state of S=17/2 has been synthesized.
A mathematical model is developed to analyze the growth/decay rate of surface perturbations of an ultrathin metal film on an amorphous substrate (SiO_{2}). The formulation combines the approach of Mullins [J. Appl. Phys. v30, 77, 1959] for bulk substrates, in which curvature-driven mass transport and surface deformati…
Although many haloarchaea produce biodegradable polyhydroxyalkanoates (PHAs), the genes involved in PHA synthesis in the domain of Archaea have not yet been experimentally investigated yet. In this study, we revealed that Haloarcula marismortui was able to accumulate poly(3-hydroxybutyrate) (PHB) up to 21% of cellular…
We present Wannier90, a program for calculating maximally-localised Wannier functions (MLWF) from a set of Bloch energy bands that may or may not be attached to or mixed with other bands. The formalism works by minimising the total spread of the MLWF in real space. This done in the space of unitary matrices that descr…
We derive boundary conditions for the coupled spin-charge diffusion equations at a transmitting interface between two-dimensional electron systems with different strengths of the Rashba spin-orbit (SO) coupling $α$, and an electric field parallel to the interface. We consider the limit where the spin-diffusion length…
This work elucidated the detailed electrochemiluminescence (ECL) process of the thioglycolic acid-capped CdSe quantum dots (QDs) film/peroxide aqueous system. The QDs were first electrochemically reduced to form electrons-injected QDs approximately -1.1 V, which then reduced hydrogen peroxide to produce OH* radical. T…
Abstract Dynamic mechanical analysis (DMA) can be a particularly useful tool for studying PVC plastisol manufacturing processes. DMA temperature sweeps are uniquely able to characterize plastisol gelation and fusion behavior under low shear stress conditions that are similar to conditions found in many commercial plas…
Abstract The Claisen rearrangement is a versatile reaction for the preparation of either isobutenylidene‐ or n ‐butenylidene‐bridged bis(8‐hydroxyquinoline) ligands for supramolecular chemistry. The Hiratani–double‐Claisen rearrangement of the appropriate isobutenylidene bis(aryl) ethers enables the formation of eithe…
Abstract A simple approach to improve the structural ordering in block copolymer/nanoparticle nanocomposites is presented. It is to blend a small molecular weight homopolymer with the composites, which can uniformly swell the preferred domain where the nanoparticles locate and increase the conformational entropy of th…
Hybrid thermoelectric conversion (HTC) has been used as a means to improve the efficiency of high performance mobile computing systems. HTC utilizes the thermal margin in the cooling solution, when the electronic component is not fully active, to integrate a thermoelectric (TE) module into the heat dissipation path fo…
Abstract Gibbs energy, enthalpy, and entropy of mixing in binary blends of chitosan with ter‐copolyamide 6/66/610 at ambient conditions have been determined over the entire concentration range using thermodynamic cycle based on dissolution of individual polymers and their blends of different composition in a common so…
A brief review is given on the studies of ferroelectricity in perovskites. Early phenomenological theories of displacement-type ferroelectrics are considered. Two markedly different approaches based on density-functional theory are described. In one approach, the electron density of crystal is determined as a sum of B…
Using the group-theoretical methods, the complete set of critical and noncritical order parameters arising at phase transitions in crystals with the Oh 5 - Fm3m space group has been obtained and analyzed. The mechanical and permutation representations have been constructed, and their composition for all the right syst…
The paper reports the deterministic effects of a focusing electric field in improving the purity and yield of the arc-generated carbon nanotubes (CNTs). The method utilizes a focusing electrostatic field, which was superimposed on the arc symmetrically. The focusing voltage was varied from 0 to 1200 V at steps of 200…
The interface microstructure in a simulated sandwich structure of Ni base-metal electrode and BaTiO 3 dielectric has been studied by transmission electron microscopy. Some Ni grains have been oxidized to NiO; most of them although coarsened and poorly densified remained Ni metal. NiO formed during the reoxidation step…
Abstract A new straightforward strategy for synthesis of novel hyperbranched poly (ether amide)s from readily available monomers has been developed. By optimizing the reaction conditions, the AB 2 ‐type monomers were formed dominantly during the initial reaction stage. Without any purification, the AB 2 intermediate w…
The capillary rise of liquid in the gap between two closely spaced parallel cylinders, whose radii may be identical or different, is modelled in this paper. On the basis of the minimum free energy principle and interfacial analysis, the vertical capillary rise of liquid at equilibrium was calculated as a function of d…
Abstract ZnO crystals were synthesized from basic aqueous solutions including zincate ions stabilized with triethanolamine (N(C 2 H 4 OH) 3 , teaH 3 ) by heating at 60°C. The influence of the basicity of the solutions on the morphology of the ZnO crystals was examined. The aqueous solutions were prepared using ZnSO 4…