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。
The authors have examined the relaxation of the electrical properties of vacuum-deposited x-ray photoconductor-type a-Se1−xAsx (x=0%–0.5%) films in terms of the time evaluation of the deep trapping time τ, i.e., carrier lifetime, and the drift mobility μ from the time the samples were brought to 23 °C after they had b…
Abstract The grafting copolymerization of natural rubber and o ‐aminophenol was carried out by using two‐roll mill machine. The prepared grafted antioxidant, NR‐graft‐ o ‐AP, analyzed by using Infrared and 1 H‐NMR Spectroscopy techniques. The thermal stability, mechanical properties, and ultrasonic attenuation coeffic…
A new class of equilibrium solid-stabilized oil-in-water emulsions harbors a competition of two processes on disparate time scales that affect the equilibrium droplet size in opposing ways. The aim of this work is to elucidate the molecular origins of these two time scales and demonstrate their effects on the evolutio…
The present study describes the effect of thermo, thermo-oxidative, and ozone exposure on the retention of physical property of organoclay nanocomposites. Accelerated thermal aging is carried out at 130°C for 30 h. Accelerated thermo-oxidative aging is carried out at 105°C for 7 days. Samples are exposed to 50 pphm oz…
Compounds of composition Pb5(P x V1−x O4)3Cl (0 ≤ x ≤ 1), which are synthetic analogues of minerals pyromorphite, vanadinite, and endlichite, were synthesized for the first time by high-temperature solid-phase reactions. X-ray diffraction and IR spectroscopy were used to determine the structure of the compounds and re…
Co-ferrite (CoFe2O4) thin films were pulsed laser deposited on fused quartz substrate at different substrate temperatures (TS) ranging from room temperature (RT) to 750°C in oxygen pressure of 0.16 mbar. All the deposited films were ex-situ annealed at different temperatures (TA) between 350 and 1100°C in air for 2 h…
A metamaterial (MM) consisting of double layer closed rings (DCRs) and a split-wire shows the different manipulations of the transmission T(ω) and reflection R(ω) to obtain simultaneous minimums. Parametric studies on the MM and a further LC circuit model are proposed, showing that the phenomenon is dominated by the i…
Abstract This work investigates the effect of the addition of a well‐known antioxidant, α‐tocopherol in poly (lactic acid) flexural and barrier properties. For that purpose, films of poly(lactic acid) enriched with 0, 2.2, and 4.4% of α‐tocopherol were prepared. Differential scanning calorimetry, thermogravimetric ana…
Abstract We present a simple method for the fabrication of separated brush‐like networks with both improved optical and biological properties. The brush networks were fabricated by combing the glancing angle deposition (GLAD) technique with colloidal mask templating. By changing the deposition angle during GLAD on the…
The polyatomic tetrahydroxytetraindium(III) cations, In 4 (OH) 4 8+, have been synthesized in 94% of the sodalite cavities of zeolite Y (FAU, Si/Al = 1.69). In−Y ( | In 57.8 [In 5 ] 1.8 | [Si 121 Al 71 O 384 ]−FAU or In 66.8 −Y) was prepared by the oxidative solid state ion exchange (OSSIE) method from In 0 and single…
We studied high-pressure behavior of CeFeAsO 1− x F x superconductors with x =0.16 and x =0.3 by in situ measurements of electrical resistance, X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS) with diamond anvil cell (DAC). A pressure-induced quantum phase transition from the superconducting state to th…
We investigate the quantum Hall regime in a graphene flake with different levels of disorder. Under high magnetic field, an unexpected decrease in the Hall resistance occurs when only the zeroth-energy Landau level is populated. The presence of disorder rules out the expected appearance of the $\ensuremath{\nu}=0$ qua…
Abstract Organo‐modified layered silicates were synthesized and used as inorganic carriers for CoCl 2 (P t Bu 2 Me) 2 ‐MAO catalyst in the polymerization of 1,3‐butadiene, yielding cis ‐1,4‐enriched polybutadiene. The organoclays were prepared by: (i) intercalation of ( ar ‐vinyl‐benzyl)trimethyl ammonium chloride sal…
The application of concepts from equilibrium statistical mechanics to out-ofequilibrium systems has a long history of describing diverse systems ranging from glasses to granular materials.For dissipative jammed systems -particulate grains or droplets-a key concept is to replace the energy ensemble describing conservat…
This review briefly summarizes the main approaches to the use of polymers as materials for designing implants; components of biologically active systems; and systems employed in cell, tissue, and gene engineering; as materials for sorption and membrane-separation devices and bioanalytical systems, and as artificial bi…
The pressure and materials gaps in heterogeneous catalysis often complicate the extrapolation of results from surface science experiments over single crystals to real catalysis at elevated pressures and polycrystalline samples. Previous ammonia oxidation studies reported ca. 100% NO selectivity and the absence of N 2…
Amino acids often cocrystallize with water molecules, which make them pseudopolymorphs of their anhydrous forms. In this work, we discuss in detail the hydrogen bond patterns in anhydrous L-proline and DL-proline and its pseudopolymorphic forms: L-proline monohydrate and DL-proline monohydrate. For this propose, the c…
Crystal structures and microstructures associated with ferroelectric properties in a lead-free piezoelectric compound, x (Bi 0.5 K 0.5 )TiO 3 –(1- x )BiFeO 3 , have been investigated mainly by transmission electron microscopy (TEM). Complicated ferroelectric domain structures with a width of approximately ∼200 nm were…
The purification and functionalization of commercial multiwall carbon nanotubes was investigated. Carbon nanotubes (CNT CO., Ltd, Korea) were treated with boiling concentrated HNO 3 under a reflux condenser for about 50 h at 120 C in order to purify and oxidize the raw material. The oxidized multiwall carbon nanotubes…
The enhancement of resonant magnetoelectric (ME) effects is reported in the structure consisting of a piezoelectric PZT (Pb(Zr1 − xTix)O3) plate, a magnetostrictive Terfenol-D (Tb1 − xDyxFe2 − y) plate, and multiple high-permeability FeCuNbSiB (Fe73.5Cu1Nb3Si13.5B9) ribbon plates. The FeCuNbSiB ribbon acts as the dyna…