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。
Starch acetates (SA) were synthesized by maize starch reacting with acetic acid/acetic anhydride, using sulfuric acid as catalyst. The biodegradable films were produced by thermal gelatinization of starch suspensions blending raw starch or SA with different degree of esterification (DS) and polyvinyl alcohol (PVA). Fo…
Abstract Eight alternating polar/non‐polar peptides derived from β‐sheet EAK‐16 were studied for their possible use as biomimetic materials, due to their self‐assembling properties. IR and Raman spectroscopies were used to investigate the influence of the sequence on the prevailing conformation of the peptide and its…
The magnetic properties of Tm-doped AlxGa1−xN (0⩽x⩽1) alloys grown by solid-source molecular beam epitaxy were studied by hysteresis measurements and shown to exhibit ferromagnetic behavior at room temperature. The measured magnetization was strongly dependent on the Al content and reached a maximum for x=0.62. Previo…
The present work focuses on the incorporation of radicals in organic SiCO(H) films with low dielectric constant . The SiCO(H) films were deposited by dielectric barrier discharge plasma method using a mixture of and Ar gases at different conditions (varying the frequency and pressure). The evolution of the film micros…
Abstract The effectiveness as impact modifier of two in situ maleated metallocene copolymers, a metallocene polyethylene, (mPE1) and a metallocene ethylene‐propylene (mEPDM) and three commercial maleated copolymers (mPE2‐ g ‐MA, EPDM‐ g ‐MA, and mEPR‐ g ‐MA) were studied in binary and ternary blends carried out in an…
The evolution of surface roughening during etching of TaN, TiN, Si, HfN, and IrO 2 in Cl 2 was studied.It was observed that surface roughness depended on self-bias voltage and pressure; lower surface roughness was obtained at higher bias voltage and lower pressure during etching of TaN, TiN, and Si in Cl 2 whose boili…
$^{57}\mathrm{Fe}$ M\"ossbauer spectra of $\mathrm{Eu}\mathrm{Ni}{\mathrm{O}}_{3}$ and doped with $1\phantom{\rule{0.3em}{0ex}}\mathrm{at.}\phantom{\rule{0.2em}{0ex}}%$ $^{57}\mathrm{Fe}$ recorded in the temperature range $300\phantom{\rule{0.3em}{0ex}}\mathrm{K}\ensuremath{\leqslant}T\ensuremath{\leqslant}480\phantom…
We investigated the electron-phonon coupling effects on the electronic transport properties of metallic (5,5)- and semiconducting (10,0)-carbon nanotube devices. We calculated the conductance and mobility of the carbon nanotubes with micron-order lengths at room temperature, using the time-dependent wave-packet approa…
Abstract The linear thermal expansion coefficients (CLTEs) along flow direction (FD) for the injection‐molded blends composed of isotactic polypropylene (iPP) and various ethylenic thermoplastic elastomers (TPEs) were investigated using a thermo‐mechanical analyzer. The iPP/TPE blends with higher comonomer contents in…
This paper investigates the characteristics of the deformation and perforation on thin-walled structures under ballistic impacts based on the DYNA3D numerical simulations. Perforation mechanisms of plates and numerical modelling techniques to simulate the response of thin-walled structures under ballistic impacts are…
Damanik and collaborators (2007) gave the behavior for large coupling constant of the box dimension of the spectrum of a one-dimensional discrete Schrödinger operator whose potential is a Sturm sequence associated with the golden ratio. They also show that in this case the Hausdorff and box dimensions coincide (i.e. t…
Abstract Melt intercalation method was applied to produce acrylonitrile‐butadiene‐styrene/polyamide‐6 (ABS/PA6) blends based organoclay nanocomposites using a conical twin‐screw microcompounder. The blend was compatibilized using a maleated olefinic copolymer. The effects of microcompounding conditions such as screw s…
Mg2Si1−xSnx (x = 0.2, 0.4, 0.6 and 0.8) thermoelectric materials have been prepared by vacuum melting and melting/hot-pressing methods. The phase structures and electrical transport properties were measured. The relationships between electronic structures and electronic properties are discussed. X-ray diffraction (XRD…
Optical properties of ferroelectric Bi3.25La0.75Ti3O12 (BLT) films on quartz have been investigated using ultraviolet-infrared transmittance spectra in the temperature range of 77–500K. The spectra can be divided into three distinctive photon regions between 1.1 and 6.5eV. It is found that the band gap Eg decreases fr…
Abstract A new organic‐solvent‐free water‐phase suspension method was used to synthesize partially epoxidized high trans ‐1,4‐polyisoprene (TPI) to improve its properties, including oil resistance and wet‐skid resistance. The epoxidation was conducted in an aqueous peracetic acid solution and on the TPI granules prepa…
We report a study of the site configuration of Ga atoms in Ga-doped ZnO thin films by means of x-ray absorption spectroscopy (XAS). Ga-related donors remain electrically active after vacuum annealing at 800°C. On the opposite, annealing the films in air (400°C) leads to a dramatic decrease of the conductivity by four…
The optical constants of electron-beam evaporated boron from 6.8 to 900 eV were calculated through transmittance measurements of boron thin films deposited onto carbon-coated microgrids or LiF substrates in ultrahigh-vacuum conditions. In the low-energy part of the spectrum the measurements were performed in situ on f…
The optoelectronic properties of a layered mixed-anion compound, LaZnOP, which is expected to be a wide gap $n$-type semiconductor, are examined. LaZnOP shows electronic conduction with conductivities up to $5.2\phantom{\rule{0.3em}{0ex}}\mathrm{S}∕\mathrm{cm}$ at room temperature by Cu doping. The signs of Seebeck co…
We have theoretically evaluated magnetic permeability of Ni nanocomposite films, in which the dipolar interactions between the Ni particles are considered explicitly. A numerical model of the nanocomposite is constructed according to our recent experimental results and a micromagnetic calculation is conducted. We show…
Cyclic voltammetry was used in order to directly deposit hydrous ruthenium oxide on conductive diamond substrates. It was found that, at the hydrogen-terminated boron-doped diamond (BDD) surface, the overall deposition process is rather slow compared to the case of metal substrates. Nevertheless, the values estimated…