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。
Abstract This review describes the recent advances made in the syntheses, structures (including the use of synchrotron sources and variable‐temperature crystal structures and PXRD determinations of unit cell axes), magnetism, and photomagnetism of dinuclear and 1‐D chain spin‐crossover compounds of (primarily) iron(II…
Tm(3+)-Yb(3+) codoped transparent oxyfluoride glass ceramics containing LaF(3) nanocrystals were obtained by thermal treatment on the as-made glasses. The formation of LaF(3) nanocrystals and the incorporation of Tm(3+) and Yb(3+) into LaF(3) nanocrystal lattice were confirmed by X-ray diffraction and high resolution…
Because of a relatively low atomic packing density, (Cg) glasses experience significant densification under high hydrostatic pressure. Poisson's ratio (nu) is correlated to Cg and typically varies from 0.15 for glasses with low Cg such as amorphous silica to 0.38 for close-packed atomic networks such as in bulk metall…
Since the introduction of aspirin in 1899, and more particularly since the advent of antibiotic “wonder drugs” in the 1940s, society has come to rely on the widespread availability of therapeutic drugs at reasonable prices. It was a tremendous challenge to bring penicillin to market and could not have been done withou…
We present an innovative integration process to obtain via interconnects made of one single carbon nanofiber structurally close to multiwall nanotubes. The nanofiber’s growth is obtained thanks to a self-aligned Co based layer which plays the role of catalyst and diffusion barrier at the same time. scanning spreading…
Abstract Electroplated hard chromium (EHC) is widely coated onto parts to provide resistance to corrosion, wear and impact. The electroplating process, however, has significant health and environmental impacts. Air emissions during the electroplating process contain hexavalent chromium (Cr+6) - a known carcinogen, fur…
Abstract Intermediate temperature - solid oxy-fuel cells (IT-SOFCs) include in their design a solid electrolyte layer made of yttria-partially stabilized zirconia (Y-PSZ), an ionic conductor, through which oxygen ions diffuse. This layer needs to fulfill several characteristics among which a low leakage rate correspon…
Abstract NiFe 2– x Cr x O 4 , 0 ≤ x ≤ 1.8, produced from appropriate oxides, has been studied using Mössbauer spectroscopy (MS) at low and ambient temperatures and in external fields up to 7 Tesla. X‐ray diffraction (XRD) shows all samples to be single phase cubic spinels, where a 0 changes with change in x , as a con…
This work involves a comparative study of six different linear methods: three methods based on several curves and three based on a single curve for derivÂing kinetic parameters from TG/DTG curves in the interval related to oil and hydrocarbon generation. Such methods were applied for interpretation of nonisothermal d…
We report results of an extensive study of the structural relaxation occurring in mixed alkali metaphosphate liquids obtained by photon correlation spectroscopy. Values for the glass transition temperature, the fragility index, and the heterogeneity parameter (also known as the Kohlrausch exponent) are extracted from…
The molecular magnet $\text{Hpyr}[{\text{Fe}}_{17}{\text{O}}_{16}{(\text{OH})}_{12}{(\text{py})}_{12}{\text{Br}}_{4}]{\text{Br}}_{4}$ (``${\text{Fe}}_{17}$'') has a well-defined cluster spin ground state of $S=35/2$ at low temperatures and an axial molecular anisotropy of only $D\ensuremath{\simeq}\ensuremath{-}0.02\t…
A study on the effect of alkalisaton using 3% NaOH solution was carried out on Flax, Kenaf, Abaca and Sisal to observe the impact that the common pre-treatment process has on fibre mechanical properties. The result of the investigation indicated that over-treatment of natural fibres using NaOH could have a negative ef…
Abstract Chitosan‐methyl cellulose based films which incorporatate vanillin as an antimicrobial agent and polyethylene glycol 400 (PEG) as a plasticizer were developed in this study. The effects of vanillin and plasticizer concentration on mechanical, barrier, optical, and thermal properties of chitosan‐methyl cellulo…
We explore the frequency characteristics of triple-walled carbon nanotube (TWCNT) oscillators using molecular dynamics simulations. The fast Fourier transform results of the TWCNT oscillators show both primary (f(1)) and minor (f(2)) peaks. The frequency characteristics of TWCNT oscillators are closely related to the…
Hard graphitelike hydrogenated amorphous carbon with distinct infrared absorption spectra in the C–Hx stretching region is reported. These spectra are characterized by two separated peaks corresponding predominantly to sp3 CH and sp2 CH stretching modes and reveal a distinct absence of endgroups (sp2 CH2 and sp3 CH3).…
Abstract In this paper, the surfactant dodecylcysteine hydrochloride was synthesised. The surface parameters of the synthesised surfactant were studied using a surface tension technique. The surface parameters show a good surface activity of the prepared surfactant in aqueous solution. The self‐assembling behaviour of…
We demonstrate the use of copolymer micelle lithography using polystyrene-block-poly(2-vinylpyridine) reverse micelle thin films in their as-coated form to create nanopillars with tunable dimensions and spacing, on different substrates such as silicon, silicon oxide, silicon nitride and quartz. The promise of the appr…
The time-dependent periodic distortion profile in a nematic liquid crystal phase grating has been measured from the displacement of tilt fringes in a Mach–Zehnder interferometer. A 0.2Hz squarewave voltage was applied to alternate stripe electrodes in an interdigitated electrode geometry. The time-dependent distortion…
Abstract Peptides of alternating charge and hydrophobic amino acids have a tendency to adopt unusually stable β‐sheet structures that can form insoluble macroscopic aggregates under physiological conditions. In this study, analogues of a well‐known self‐assembling peptide, characterized by the same polar/nonpolar peri…
Abstract Polarized FT‐IR, Raman, neutron scattering (IINS), and UV‐Vis‐NIR spectra of 2‐methyl‐4‐nitroaniline (MNA) crystal plates, powder, and solutions were measured in the 10–50 000 cm −1 range. The FT‐IR spectrum of deuterated MNA (DMNA) in KBr pellet, the Raman spectrum of the DMNA powder as well as the EPR spect…