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。
A common problem in applying electrospun biodegradable polyester matrixes as tissue-engineering scaffolds is their serious shrinkage with degradation to reduce the porosity drastically. To ameliorate this problem, a nestlike-patterned poly(D,L-lactide-co-glycolide) (PLGA) nanofibrous (∼900 nm) matrix was proposed and…
We investigate bilayer graphene transport in the presence of electron-hole puddles induced by long-range charged impurities in the environment. We explain the insulating behavior observed in the temperature-dependent conductivity of low mobility bilayer graphene using an analytic statistical theory taking into account…
Observations of the Earth are extremely challenging; its large angular extent floods scientific instruments with high flux within and adjacent to the desired field of view. This bright light diffracts from instrument structures, rattles around and invariably contaminates measurements. Astrophysical observations also a…
Highly efficient ultraviolet (UV) photodetection has been realized in nanocolumnar radio frequency (RF) sputtered ZnO thin films as compared to sol-gel nanocrystalline films and aqueous chemically grown nanowire (NW) arrays. The photo-to-dark current ratio in the columnar films reaches a value as high as 10(6) which i…
Supramolecular assembly (SMA) between poly(styrene)- b- poly(4-vinylpyridine) (PS- b -P4VP) and 1-pyrenebutyric acid (PBA) is investigated in thin films after annealing in a 1,4-dioxane atmosphere. The PBA selectively enriches with the P4VP block through hydrogen bonding between the carboxylic group of 1-pyrenebutyric…
Surface-enhanced Raman scattering (SERS) has been intensely researched for many years as a potential technique for highly sensitive detection. This work, through the reduction of HAuCl(4) with pyrrole in aqueous solutions, investigated a facile one-pot synthesis of flower-like Au nanoparticles with rough surfaces. The…
Environmental context. Manufactured nanoparticles, increasingly used in a wide range of products, can be released into the natural environment where they might pose a risk to environmental and human health. The nanoparticle characteristics that induce toxic effects, however, are not yet well-known. Understanding the t…
Explicit solvent all-atom molecular dynamics simulations of mixtures of poly(styrenesulfonate)(PSS) and poly(diallyldimethylammonium) (PDADMA) polyelectrolytes at various salt (NaCl) concentrations are performed. We characterize the formed polyelectrolyte complexes (PECs) and relate the observed physical properties of…
Thermally sensitive quantum dots (TSQDs) that exhibit an "on-demand" cellular uptake behavior via temperature-induced "shielding/deshielding" of cell penetrating peptides (CPP) on the surface were fabricated. Poly(N-isopropylacrylamide) (PNIPAAm) (M(w) = 11.5K) and CPP were biotinylated at their terminal ends and co-i…
We present the first direct evidence of flow-concentration coupling in a shear-banding fluid using the first measurements of scanning narrow-aperture flow ultrasmall-angle neutron scattering. Transmission measurements in the flow-gradient shear plane determine the spatial concentration profile of the material. Shear b…
Using first principles calculations, we examine how the ensemble effect on the performance of bimetallic catalysts is affected by the change of surface electronic structure associated with their geometric parameters. We look at H 2 O 2 formation from H 2 and O 2 based on three different Pd monomer systems including Au…
This work reports on the kinetic control of MnWO 4 nanoparticles with an aim to achieve the tailored structural properties. Using citric acid as the capping agent, MnWO 4 nanocrystals were prepared to show particle sizes ranging from 8 to 29 nm under hydrothermal conditions. The grain-growth kinetics for MnWO 4 nanopa…
In this paper, we have synthesized a series of core/shell quantum dots (QDs) for the purpose of enhancing the electron transfer from the dots to a TiO 2 substrate. We make use of the fact that CdSe is a small-bandgap material compared with CdS; therefore, in a common CdSe/CdS core/shell QD, the photo-excited electron…
Combining the self-consistent field theory (SCFT) and the density functional theory (DFT), we investigated the self-assembly behavior of AB diblock copolymer tethered single spherical particle P (ABP molecules). Two cases were studied: one is where the particles are chemically neutral to both A and B blocks, and the o…
Abstract Flexible, self‐extinguishing silicone foams (SFs) with a relatively low density (0.25–0.45 g/cm 3 ) were obtained from a mixture of α,ω‐(dihydroxy)polydimethylsiloxanes, water, flame retardants (melamine and/or expanded graphite), and polyisocyanates [poly(diphenylmethane isocyanate)]. These compositions were…
Research on nanotoxicity is of extremely high scientific, social, and economic value. As nanomaterial-based products enter the market, there is an urgent need for related research in order to prevent dramatic consequences of any health-oriented issues caused by nanotechnology-driven products. The results of research o…
The formation of reverse-vesicular structures of the polyoxometalate-containing hybrid surfactants [nBu(4)N](3)[MnMo(6)O(18){(OCH(2))(3)-CNHCO(CH(2))(n-2)CH(3)}(2)] (Mn-Anderson-C(n), n=6, 16) in nonpolar medium was achieved by titrating toluene into Mn-Anderson-C(n)/acetonitrile (MeCN) solution. Stepwise change of th…
We present a comparative study of the electronic band structures of the compounds $\text{Cu}M{\text{O}}_{2}$ $(M=\text{B},\text{Al},\text{In},\text{Ga})$ which belong to the family of delafossite transparent conductive oxides. The theoretical approaches we use are the standard local-density approximation (LDA) to dens…
Three types of nanoparticle formulation from biodegradable PLGA-TPGS random copolymer were developed in this research for oral administration of anticancer drugs, which include DMAB-modified PLGA nanoparticles, unmodified PLGA-TPGS nanoparticles and DMAB-modified PLGA-TPGS nanoparticles. Firstly, the PLGA-TPGS random…
A versatile method was developed to synthesize nickel silicate, silica, and silica-nickel composite porous hollow spheres by using silica spheres as templates. In the preparation, silica spheres were treated with a mixture of NiSO(4)·6H(2)O and NH(3)·H(2)O. The nickel-based ingredient reacted with the silica to form a…