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 Blends of poly(vinyl chloride) (PVC) with different ratio of poly(ethyl methacrylate) were characterized with respect to their physical, mechanical, thermal, and morphological properties. The blends indicated a gradual rise in the modulus and ultimate tensile strength values followed by a reduction in the per…
Abstract Irradiation of ultrasonic waves induces cavitation in a solution, and a chemical action instigated by radicals occurs. This chemical action is reported to be most efficient in the region of several hundred kilohertz frequencies. Application of sonochemistry based on ultrasonic chemical action remains at the l…
Highly fluorescent and stable CdSe/ZnS core/shell quantum dots (QDs) coated with gemini surfactant are successfully synthesized in aqueous media. Analyses of luminescence spectrometry, ultraviolet–visible (UV–vis) spectrophotometry, and transmission electron micrographs (TEMs) indicate that the water-soluble QDs are m…
In this letter, the authors describe both a growth method for self-aligning copper silicide (Cu3Si) nanobeams and their use as active catalysts for carbon nanotube (CNT) synthesis via chemical vapor deposition. In the unique geometry of these useful structures, CNT cantilevers are anchored firmly to the Cu3Si nanobeam…
Abstract Phenol–formaldehyde (PF) resins have been the subject of many model‐fitting cure kinetic studies, yet the best model for predicting PF dynamic and isothermal cure has not been established. The objective of this research is to compare and contrast several commonly used kinetic models for predicting degree of c…
Three generations of dendrons (G1, G2 and G3) with phenyl end-groups were intercalated into montmorillonite (MMT) layered silicates in dimethylformamide/water cosolvent. These dendrons synthesized via the convergent route were different in size and shape with molecular weights ranging from 930 to 5975?g?mol?1. X-ray d…
It is widely recognized that the rearrangement of martensite variants in a ferromagnetic shape memory alloy (FSMA) can lead to much higher strain than conventional magnetostriction. In this letter, the authors show that magnetization rotation can reduce ferromagnetic shape memory effect substantially when motion of th…
Abstract Iron oxide nanoparticle coated poly(ethylene oxide) nanofibers as organic–inorganic hybrids with 200–400‐nm diameters were prepared by the in situ synthesis of iron oxide nanoparticles on poly(ethylene oxide) nanofibers through the electrospinning of a poly(ethylene oxide) solution having Fe 2+ and Fe 3+ ions…
Single-wall carbon nanotubes decorated by gold nanoparticles with sizes of a few tens of nanometers were investigated by confocal Raman microscopy. It was found that individual nanoparticles impart a sizable Raman enhancement exceeding one order of magnitude, without appreciably interfering with polarization dependent…
Abstract Europium aluminium garnet (Eu 3 Al 5 O 12 , EAG) was synthesized by an aqueous sol‐gel process and subsequent thermal annealing at 800 – 850 °C. Eu 3 Al 5 O 12 crystallizes cubic ( ${\rm (} Ia \bar{\mathit 3} d, {\rm a = 12.140(1)\AA)}$ and its crystal structure was refined from X‐ray powder data. The refined…
Self-supported films of nanocrystalline BaTiO3 exhibit a two orders of magnitude enhancement of the pyroelectric coefficient (≈1μC∕cm2K) with respect to the value measured for a single BaTiO3 crystal. The enhancement strongly depends on film geometry and appears only in buckled films where ferroelectric grains undergo…
The authors present a theoretical analysis of a super-resolving lens based on one-dimensional metal-dielectric photonic band gap composed of Ag∕GaP multilayers. The lens contains a total of ten optical skin depths of Ag, yet maintains a normal incidence transmittance of ∼50% for propagating waves over the super-resolv…
The ( H , T )-phase diagram of the multiferroic perovskite TbMnO 3 was studied by high-resolution thermal expansion α( T ) and magnetostriction Δ L ( H )/ L measurements. Below T N ≃ 42 K, TbMnO 3 shows antiferromagnetic order, which changes at T FE ≃ 28 K where simultaneously a spontaneous polarization P ∥ c develops…
The remarkable mechanical, electrical and thermal properties of single-walled carbon nanotubes (SWCNTs) have attracted extensive research interest as structural and functional materials. In particular, SWCNTs have been used to reinforce polymers and ceramic composites and great progress has been made. For metal matrix…
CdSe nanocrystals with a zinc blende structure allowed apparent Mg doping (∼9.8 at.%). Inverse micelles were formed at a low temperature as templates for the zinc blende CdSe nanocrystals, and paraffin oil and oleic acid were used as a solvent and a surfactant, respectively. The Mg doping was shown by energy dispersiv…
Electric-field-induced lattice strains in a tetragonal ferroelectric lead zirconate titanate bulk ceramic are characterized under application of subcoercive cyclic electric fields using neutron diffraction and a stroboscopic data collection technique. At a driving electric field equal to half of the coercive field, th…
The interactions between edge dislocations and grain boundaries---dislocation pileup, dislocation absorption, and dislocation transmission---are studied by performing quasicontinuum simulations. The $⟨112⟩$ asymmetrical tilt grain boundaries with different misorientation angles are used. The atomic configurations and…
A self-organized tantalum oxide nanopyramidal structure without tedious semiconductor processing is proposed in this letter. Construction of pyramid arrays with a close-packed periodicity of 200nm and a height of 200nm was achieved by the anodic alumina template method directly on the substrate. The tantalum oxide nan…
An atomistic study is conducted on the effect of H, which is homogeneously distributed in a stacking fault, on the activation energy of the cross slip of a screw dislocation in Ni using the embedded-atom method. The global minimum energy configurations with H in the stacking fault and the cross-slip processes are dete…
The magnetic phase diagram of single crystalline ${\mathrm{Ho}}_{1\ensuremath{-}x}{\mathrm{Y}}_{x}\mathrm{Mn}{\mathrm{O}}_{3}$ below ${T}_{N}$ is determined by measuring the magnetic susceptibility $(\ensuremath{\chi})$, specific heat $({C}_{p})$, dielectric constant $(\ensuremath{\epsilon})$, and thermal conductivity…