Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Mesoporous carbons with 3-D body-centered cubic, 2-D hexagonal, and wormlike symmetries were synthesized via organic−organic self-assembly and further activated by CO 2 to improve the pore connectivity. These samples have almost the same mesopore size but different pore symmetries and connectivity, which are used as t…
Abstract The dominant entropy contribution affecting defect concentrations is configurational entropy. Other contributions such as harmonic and anharmonic lattice vibrations are second order effects and computationally expensive to calculate. Therefore, such contributions have been rarely considered in defect investig…
In order to gain insight into the so-called d(0)-magnetic properties of defective ZnO we have carried out first principles calculations on various types of defects formed by intrinsic defects and doped atoms as well as pairs of them. The doped atoms include N and H. In agreement with previous works we find several pos…
A new self-assembling tricyclic module (×K1) featuring the Watson-Crick H-bonding arrays of guanine and cytosine fused to an internal pyridine ring was synthesized. When dissolved in water at room temperature, this module rapidly self-assembles into hexameric rosettes, which then stack to form J-type rosette nanotubes…
Well-dispersed suspensions are a prerequisite when preparing smooth model surfaces based on neutral bacterial cellulose nanocrystals (BCNs). However, neutral nanocrystal suspensions present pronounced particle aggregation. Carboxymethyl cellulose (CMC) or xyloglucan (XG) was therefore added to aggregated BCN suspensio…
The morphologies that block polymers exhibit under various types of confinement are reviewed with emphasis on experimental results and theoretical predictions. Confining geometries in all three dimensions are considered and special attention is paid to cylindrical and spherical boundary conditions. Past experimental t…
Surface properties of wood are important for both wettability and hydrophobic modification.Glueability of wood is related to wettability, while durability and decay resistance are affected by physical and chemical components.This review (Part I) discusses hydrophilic characteristics of surfaces.Surface theories, calcu…
Chemical exchange saturation transfer (CEST) and magnetization transfer techniques provide unique and potentially quantitative contrast mechanisms in multiple MRI applications. However, the in vivo implementation of these techniques has been limited by the relatively slow MRI acquisition techniques, especially on high…
A liposome formulation for paclitaxel was developed in this study. The liposomes, composed of naturally unsaturated and hydrogenated phosphatidylcholines, with significant phase transition temperature difference, were prepared and characterized. The liposomes exhibited a high content of paclitaxel, which was incorpora…
Aryl polyphosphonates (ArPPN) have been demonstrated to function in wide applications as flame retardants for different polymer materials, including thermosets, polycarbonate, polyesters and polyamides, particularly due to their satisfactory thermal stability compared to aliphatic flame retardants, and to their desira…
We report the first single-molecule magnet (SMM) to incorporate the [Os(CN)(6)](3-) moiety. The compound (1) has a trimeric, cyanide-bridged Mn(III)-Os(III)-Mn(III) skeleton in which Mn(III) designates a [Mn(5-Brsalen)(MeOH)](+) unit (5-Brsalen=N,N'-ethylenebis(5-bromosalicylideneiminato)). X-ray crystallographic expe…
Colloidal metallic and semiconductor nanocrystals (NCs) functionalized with metal chalcogenide complexes (MCCs) have shown a promise for designing materials that combine high carrier mobility with the electronic structure of strongly quantum-confined solids. Here we report a simple and general methodology for switchin…
The signal of magnetic sensors based on resonant cantilevers comprised of elastically coupled piezoelectric and magnetostrictive materials increases as the damping decreases. Here, we demonstrate that air damping which normally is suppressed by evacuation can also be substantially reduced by lowering the resonance fre…
Abstract The conventional Raman scattering spectroscopy is one of the most used and powerful techniques for characterization of nano‐sized materials and structures. By proper analysis of optical mode shift and broadening in nanomaterials based on phonon confinement model, it is possible to deduce about the influence o…
OBJECTIVES: To provide a comprehensive understanding of the competing thermodynamic and kinetic factors governing the crystallization of various hydrate systems. The ultimate goal is to utilize this understanding to improve the control over the unit operations involving hydrate formation, as well as to optimize the bi…
Hydrophobic anticancer drug 5-fluorouracil (5-FU) has been included in the carboxymethyl modified β-cyclodextrin (CMCD), and the inclusion complex (5-FU/CMCD) was further intercalated into galleries of a zinc aluminum layered double hydroxide (ZnAl−LDH) by the ion-exchange method. Powder X-ray diffraction (XRD), Fouri…
Optical birefringence measurements on a rodlike liquid crystal, octyloxycyanobiphenyl, imbibed in silica channels (7 nm diameter), are presented and compared to the thermotropic bulk behavior. The orientational and positional order of the confined liquid evolves continuously at the paranematic-to-nematic and sizeably…
In a semiconductor-based double quantum well (QW) coupled to a degree of freedom with an internal dynamics, we demonstrate that the electronic motion is controllable within femtoseconds by applying appropriately shaped electromagnetic pulses. In particular, we consider a pulse-driven AlxGa1-xAs based symmetric double…
We present evidence that the concurrent existence of two populations of particles with different effective diameters is not a prerequisite for the occurrence of anomalous phase behaviors in systems of particles interacting through spherically symmetric unbounded potentials. Our results show that an extremely weak soft…
We use a combination of ab initio calculations and statistical mechanics to investigate the substitution of ${\text{Li}}^{+}$ for ${\text{Mg}}^{2+}$ in magnesium hydride $({\text{MgH}}_{2})$ accompanied by the formation of hydrogen vacancies with positive charge (with respect to the original ion at the site). We show…