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 High density polyethylene (HDPE) and calcium carbonate (CaCO 3 ) nanocomposites with maleic anhydride grafted HDPE (manPE) as a compatibilizer were prepared via compounding in a twin‐screw extruder. The CaCO 3 are well dispersed in the HDPE matrix from the observation of transmission electron microscope. The…
Al-Mg-Si nanoclusters embedded in aluminum transform through a delicate interplay of two characteristically distinct phase transformations: a diffusion-controlled substitutional transformation associated with solute enrichment and a swift displacive transformation involving collective shifts of columns of atoms once a…
We report the results of resonant x-ray diffraction experiments performed on thick films of a biaxial liquid crystal made of achiral bent-core molecules. Polarization properties of forbidden reflections are observed as a function of the sample rotation angle phi about the scattering vector Q for the first time on a fl…
We present a procedure to investigate surface structures in CuPt alloys by combining the modified embedded atom method (MEAM) and the cluster expansion method (CEM). While the MEAM provides structural information for the description of extended anisotropic defects, the CEM improves the ability to correctly reproduce t…
This review highlights important developments in the pursuit of chiral conformational order in dendritic structures. To be able to create and control chiral secondary structure necessitates a thorough understanding of how chiral subunits influence the macroscopic structure. Recent studies involve highly sophisticated…
Cellular polypropylene ferroelectrets are useful for broadband airborne ultrasound generation and detection up to the fundamental thickness extension resonance. The authors show that the coupling of ferroelectrets to air alters the electromechanical resonance of the foam. In an acoustical cavity, Fabry-Perot resonance…
The synthesis of transition-metal phthalocyanines by the reaction of substituted and unsubstituted phthalonitriles in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and metal salts in functional imidazolium, pyridinium and ammonium ionic liquids at 100-140 °C, is reported. The best yields of metallated phtha…
The nature of charge carriers and their interaction with local magnetic moments in an oxide magnetic semiconductor is established. For cobalt-doped anatase $\mathrm{Ti}{\mathrm{O}}_{2}$ films, we demonstrate conduction in a metallic donor-impurity band. Moreover, we observe a clear signature of the Kondo effect in ele…
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…