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。
In this paper, we report a significant improvement of electron field emission property in patterned carbon nanotubes films by using a high temperature (650 °C) hydrogen plasma treatment. This treatment was found to greatly increase the emission current, emission uniformity and stability. The mechanism study showed tha…
Abstract An interpenetrating networks of varying weight percentages (5, 10, and 15%) of caprolactam‐blocked methylenediphenyl diisocyanate(CMDI)‐toughened epoxy matrices were developed and characterized. The toughened epoxy system was further modified with 1, 3, and 5% (by wt) of organophilic montmorillonite (MMT) cla…
Pure phase polycrystalline clathrates Sr8Ga16−xGe30−y with Ga/Ge ratios ranging from 0.481 to 0.517 have been prepared by the melting method. The obtained samples exhibit n-type conduction behaviour with carrier concentrations varying from 0.33 × 1020 to 2.81 × 1020 cm−3 as the Ga/Ge ratio changes from 0.517 to 0.481…
In cardiology and oncology, early disease detection produces better patient outcomes. Imaging approaches, particularly Magnetic Resonance Imaging (MRI), are attractive for screening large, mostly disease-free populations because they are noninvasive and produce high-resolution anatomical/morphological images from dise…
Abstract Cure kinetics of diglycidyl ether of a bisphenol A‐based epoxy resin (DGEBA) with 2,7‐diaminofluorene (DAF) as curing agent have been studied by using nonisothermal differential scanning calorimeter (DSC). The values of apparent activation energy ( E a ) of nonisothermal cure reaction were calculated by using…
Solid solutions of NH(4)(+) in Cs(2)WS(4) and Rb(2)WS(4) are obtained by precipitation/crystallization from aqueous solutions. By means of (14)N, (87)Rb, and (133)Cs magic angle spinning NMR, compositions and extraordinarily accurate NH(4)(+)-site preferences are established for these materials.
The prospect of improved cancer therapy using Solid Lipid Nanoparticles (SLNs) as drug delivery system is promising. Several obstacles frequently encountered with anticancer compounds, such as poor drug solubility, are overcome by delivering them using SLN. Moreover, the intravenous administration of drugs into SLNs c…
Structural and electrical properties of K0.5Bi0.5TiO3 thin films for ferroelectric field effect transistor applications, Jing, Xiangyang, Huang, Baibiao, Zhang, Xiaoyang, Qin, Xiaoyan, Wei, Jiyong, Wang, Xiaoning, Yao, Shushan, Xu, Zhenhua, Wang, Zeyan, Wang, Peng
Abstract Poly(4‐methyl‐1‐pentene) was used to prepare porous structures by a thermally induced phase‐separation method. Different porous structures were obtained with poly(4‐methyl‐1‐pentene), which has excellent properties as a polymer, and diphenyl ether as a diluent. The affecting factors, including the polymer con…
Abstract Electrical conductivity and optical properties of the poly(3‐thiophene boronic acid) have been investigated. The room temperature electrical conductivity and activation energy of the poly(3‐thiophene boronic acid) were 2.0 × 10 −9 S/cm and 0.17 eV, respectively. In the semiconductor region of the polymer, the…
Abstract Au/poly( o ‐toluidine) (POT) core/shell composite spheres have been successfully fabricated by chemical polymerization route in aqueous solution without the aid of surfactant or functional acids using HAuCl 4 as the oxidant. By altering the concentration of oxidant, the amount of Au nanoparticles inside each…
The science of molecule-based materials is an exciting subject in light of its fundamental scientific interest and potential applications. Considerable efforts are now being invested in developing strategies for the design and preparation of new materials involving an interplay or synergy between electrical conductivi…
La 0.8 Sr 0.2 MnO 3 cubes and nanoparticles were prepared by hydrothermal and citrate methods, respectively. Their cataluminescence (CTL) properties and catalytic reaction activities for CO were mainly investigated. The samples were characterized by XRD, SEM, TEM, LRS, BET, CO-TPD, O 2 -TPD, and H 2 -TPR, etc. It was…
Multiferroic composite ceramics of (1 − x )[0.94Bi 0.5 Na 0.5 TiO 3 –0.06BaTiO 3 ]– x CoFe 2 O 4 (BBNTO–CFO x ), x = 0.1, 0.2, 0.3, 0.4, 0.5, have been prepared and their structure, magnetoelectric (ME) effect, magnetic and ferroelectric properties have been investigated. x-ray diffraction and scanning electron micros…
New materials made of two- and three-dimensional superlattices of nanoparticles exhibit unique collective properties arising from the ordering of the nanoparticles. Here, dodecanethiol-coated silver nanocrystals self-assembled in 2D were subjected to oxygen plasma using the reactive ion etching process. The careful in…
Molecular dynamics (MD) simulation of calcite was carried out with the interatomic potential model based on ab initio calculations to elucidate the phase relations for calcite polymorphs and the mechanism of the rotational order-disorder transition of calcite at high temperature at the atomic scale. From runs of MD ca…
We report a simple, one-pot process for hydroxyl-functionalized gold nanocrystals with precise morphology control by a surface regulating copolymer. The copolymer, poly(vinyl pyrrolidone- ran -vinyl acetate) (PVP-PVAc), has two distinct moieties including pyrrolidone for nanoparticle formation and acetate for addition…
Here we find through computer simulations and theoretical analysis that the low temperature thermodynamic anomalies of liquid water arises from the intermittent fluctuation between its high density and low density forms, consisting largely of 5-coordinated and 4-coordinated water molecules, respectively. The fluctuati…
Thermochemical analyses of gaseous equilibrium data involving the species TiCl, TiCl(2), and TiCl(3) were revised with the aid of more recent information on the low-lying electronic states, yielding more reliable values for the enthalpies of formation, Delta(f)H(o)(298), of 40.9, -49.0, and -121.5 kcal mol(-1), all +/…
Conventional drying of the fibers from oil palm empty fruit bunches (EFB) using flue gas from diesel burners frequently causes browning and dust explosion. Replacing the drying medium with superheated steam is expected to improve the quality of EFB fibers as well as improve the safety of the dryer operation. In this s…