Materials Literature
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Sequence, which Nature uses to spectacular advantage, has not been fully exploited in synthetic copolymers. To investigate the effect of sequence and stereosequence on the physical properties of copolymers, a family of complex isotactic, syndiotactic, and atactic repeating sequence poly(lactic-co-glycolic acid) copoly…
In this paper we show that experimentally realizable apparently piezoelectric thin-film superlattices can be created from nonpiezoelectric materials provided an odd-order (e.g., trilayer) stacking sequence is used. The size-dependent mechanism of flexoelectricity, which couples gradients of strain to polarization, all…
Lead‐free (Ba 1− x Ca x )(Ti 0.95 Zr 0.05 )O 3 ( x =0.02–0.20) ceramics were prepared successfully using a solid‐state reaction technique. The polymorphic phase transitions from orthorhombic to tetragonal phase around room temperature were identified in the composition range of 0.06< x <0.10. A high piezoelectri…
We define a continuum energy functional that effectively interpolates between the mean-field Maier-Saupe energy and the continuum Landau-de Gennes energy functional and can describe both spatially homogeneous and inhomogeneous systems. In the mean-field approach the main macroscopic variable, the Q-tensor order parame…
A nanoparticle-conjugated cancer drug provides a novel strategy for cancer therapy. In this study, we manipulated nanodiamond (ND), a carbon nanomaterial, to covalently link paclitaxel for cancer drug delivery and therapy. Paclitaxel was bound to the surface of 3-5 nm sized ND through a succession of chemical modifica…
We report novel strategies to integrate block copolymer self-assembly with 193 nm water immersion lithography. These strategies employ commercially available positive tone chemically amplified photoresists to spatially encode directing information into precise topographical or chemical prepatterns for the directed sel…
Blue solution of copper(II) acetylacetonate complex, [Cu(acac)(2)] in dichloromethane (DCM) and an aqueous alkaline solution of thioacetamide (TAA) constitute a biphasic system. The system in a screw cap test tube under a modified hydrothermal (MHT) reaction condition produces a greenish black solid at the liquid-liqu…
The purpose of this study was to evaluate the effects of the application of chitosan coating containing natamycin on the physicochemical and microbial properties of semi-hard cheese. Three cheese groups were prepared: samples without coating, samples coated with chitosan and with chitosan containing 0.50 mg mL −1 of n…
Antireflective, photocatalytic (self-cleaning), water repellent, and high water-wetting (anti fogging) properties were combined for the first time into a sol−gel coating deposited onto glass substrates. Such an original multifunctional coating was obtained by sol−gel liquid deposition of two successive oxide layers. T…
In this paper we propose a theoretical model that predicts the oxidative stress potential of oxide nanoparticles by looking at the ability of these materials to perturb the intracellular redox state. The model uses reactivity descriptors to build the energy band structure of oxide nanoparticles, assuming a particle di…
Mopping up: Phase-selective gelators were synthesized from sugar alcohols using biocatalysis. The gelators exhibited an unprecedented ability to phase-selectively gel only organic liquids including crude-oil fractions in the presence of water at room temperature. Oil can be recovered from the gelled phase by heating a…
Structure relaxation of monoclinic TeMo 5 O 16 catalyst that exhibits two-dimensional semiconductive character has been controlled by ultralow doping content of vanadium. Its roles in changing the redox abilities of the catalysts are first studied via experimental and theoretical methods. Strong O−Mo···O bond alterati…
Abstract MgSiN2 cuboids were prepared using Si, Mg, and NaN3 powders as reactants in autoclaves at 350–500 °C for 12 h. SEM, TEM, and HRTEM images reveal that the product is composed of crystalline MgSiN2 cuboids. The synthesis parameters such as the ratio of the reactants, temperature, and reaction time were investig…
The bacterial phosphoenolpyruvate-dependent sugar phosphotransferase system is a multiprotein complex that phosphorylates and, concomitantly, transports carbohydrates across the membrane into the cell. The first protein of the cascade is a multidomain protein so-called enzyme I (EI). The N-terminal domain of EI from S…
Abstract Nano‐composites of poly vinyl alcohol containing different nano‐fillers namely multiple walled carbon nanotubes (MWNT), single walled carbon nanotubes (SWNT), silica nanoparticles, and silver nanoparticles were prepared by sonication‐assisted solution mixing and subjected to different doses of gamma radiation…
Liquid organic foams are prepared using a new blowing process based on the chemical generation of carbon dioxide. The foams are volumetrically stable for periods up to hours and can be fabricated with gas volume fractions ranging from 0.10 to 0.95. Both the "fresh" and temporal dependences of the linear viscoelastic r…
Ein reines Cobalt-Keggin-Gerüst mit W-O-Co-Wechselwirkungen wurde mit einem reinen Mangan-Keggin-Gerüst mit W-O-Mn-Wechselwirkungen „legiert“. Die isostrukturellen Legierungen sind feste Lösungen der Co- und Mn-Netze. Eine Reihe einkristalliner gemischter Gerüste mit neuartigen Redoxeigenschaften wurde durch Mischen d…
Abstract Near infrared spectroscopy (NIRS) may constitute a powerful tool for in‐line monitoring of morphological properties of PVC particles in suspension polymerizations. It is shown that dynamic trajectories of morphological properties, as predicted with NIR‐based calibration models, change smoothly along the batch…
Single crystals of HfAs(1.7)Se(0.2) are grown by chemical transport reaction and their chemical composition characterized in detail by various analytical methods. Chemical analyses and crystal structure investigations by single-crystal X-ray diffraction as well as powder diffraction with synchrotron radiation reveal a…
The ideal γ-Al 2 O 3 structure is elucidated by solving the defect reaction for alumina-rich magnesium aluminate spinel. The selective reduction of nickel from Ni x Mg 1− x Al 2 O 4 spinel through reaction with hydrogen enables the in situ analysis of the defect reaction as it progresses. The reaction is described by…