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。
We studied transient cavitation bubble formation and acoustic emission around individual laser-heated microparticles using subnanosecond time-resolved microscopy. Microcavitation bubbles were observed as early as 0.5 ns after the particles were heated by a 30 ps laser pulse. The bubbles expanded to a few micrometers i…
( meso -Tetrakis(4-chlorophenyl)porphinato)manganese(III) tetracyanoethenide, [MnTClPP][TCNE], has been prepared and structurally characterized as the toluene and dichloromethane disolvates, and the magnetic and thermal properties of these solvates, as well as their corresponding desolvates, have been determined. The…
AND APPLICA-TIONS.The layered double hydroxides, known as anionic clays and represented by the general formula [M 2+ 1-x M 3+ x (OH) 2 ] x+ A m- x/m •nH 2 O, are a group of materials which are of much interest currently.They present a variety of potential applications as adsorbents, catalysts and catalyst support, ion…
A series of experiments were carried out to test the hypothesis that the self-assembly of collagen I monomers into fibrils depends on the interactions of specific binding sites in different regions of the monomer. Six synthetic peptides were prepared with sequences found either in the collagen triple helix or in the N…
The shape memory alloys exhibit a number of remarkable properties, which open new possibilities in engineering and more specifically in biomedical engineering. The most important alloy used in biomedical applications is NiTi. This alloy combines the characteristics of the shape memory effect and superelasticity with e…
Abstract Sepiolite from Mara (Zaragoza, Spain) and palygorskite from Attapulgus (Georgia, USA) were activated by treatment at different concentrations with solutions of boiling HCl under reflux conditions. The natural and treated solids were characterized by mineralogical, chemical and textural analyses. Acid attack r…
We use optical microscopy to directly study ordering in concentrated colloidal suspensions of model hard spheres subjected to oscillatory shear in a parallel plate geometry. At high strain amplitude the particles order quickly into hexagonal planes in the plane of shear, oriented so that a close-packed direction is pa…
The transport and magnetic properties of magnetite (Fe3O4) thin films grown epitaxially on single crystal MgO(100) and SrTiO3(100) substrates, and with multiple grain orientations on polycrystalline SrTiO3 substrates, have been investigated. The films are grown using pulsed laser deposition and their epitaxial quality…
The phase separation of ultrathin polymer-blend films of polystyrene and polybutadiene on microcontact printed alkanethiol patterns with hydrophobic and hydrophilic end groups $(\ensuremath{-}{\mathrm{CH}}_{3}$ and -COOH) is investigated by atomic force microscopy. Simulations suggest that the phase-separation morphol…
The hydrogenation of ethylene, 1-butene, and 1,3-butadiene has been used as a probe reaction in an attempt to monitor any possible changes in catalytic behavior induced by supporting nickel on different types of graphite nanofiber support materials. This study is designed to compare the catalytic behavior of the metal…
Voronoi and Delaunay tessellations are applied to pattern recognition of atomic environments and to investigation of the nonlocal order in molecular-dynamics (MD)-simulated materials. The method is applicable also to materials generated using other computer techniques such as Monte Carlo. The pattern recognition is ba…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTLarge-Area Domain Alignment in Block Copolymer Thin Films Using Electric FieldsP. Mansky, J. DeRouchey, T. P. Russell, J. Mays, M. Pitsikalis, T. Morkved, and H. JaegerView Author Information Polymer Science and Engineering Departme…
A strong correlation between the logarithm of the secondary \ensuremath{\beta}-relaxation time, ${\mathrm{log}}_{10}[{\ensuremath{\tau}}_{\ensuremath{\beta}}{(T}_{g})],$ and the Kohlrausch exponent, $(1\ensuremath{-}n),$ or the fragility index $m$ of the primary \ensuremath{\alpha}-relaxation correlation function $\ma…
Magnetic circular dichroism (MCD) of a ferromagnetic diluted magnetic semiconductor Ga1−xMnxAs films was measured to clarify their electronic structure. Strong enhancement of MCD by Mn substitution indicated a strong sp–d hybridization. The p–d exchange interaction was concluded to be antiferromagnetic, which was in c…
We present the results of two studies: (1) a comparison of force−distance ( F − D ) profiles obtained by atomic force microscopy (AFM) and the surface forces apparatus (SFA) for a poly(2-vinylpyridine)−polystyrene (PVP−PS) brush in good solvent; (2) a series of F − D profiles for a poly(4- tert -butylstyrene)−sodium p…
An in-situ monitoring method was used to observe the initiation sites and the processes of pitting corrosion in aluminum alloy 2024-T3 (UNS A92024) in real time. These observations complemented more detailed information about composition and distribution of constituent particles, pre-and post-corrosion surface morphol…
The alloys with composition of SmCo7−xZrx(x=0–0.8) were synthesized and characterized in the temperature range of 10–1273 K and at fields up to 5 T. The experimental results show that a small amount of Zr substitution can contribute to a stabilization of the TbCu7 structure, and improve magneto-anisotropy Ha from 90 k…
The specific heat $C(T)$ of ${\mathrm{ZrW}}_{2}{\mathrm{O}}_{8}$ is measured from 1 to 300 K. Below 50 K, $C(T)$ is dominated by an Einstein term of energy $\ensuremath{\Elzxh}{\ensuremath{\omega}}_{0}\ensuremath{\approx}5\mathrm{meV}$, which represents 6.5% of the total lattice degrees of freedom. This concentration…
Abstract The SEM, XRD, FFIR and DTA analyses of different size-fractions of clay material from sandstone reservoirs which have experienced a large range of burial conditions have been used to examine the different steps of the depth-related kaolinite-dickite reaction. Dickite progressively replaced kaolinite within a…
Lewis acid−base interactions between anions and iodine-containing neutral molecules have been utilized in order to accomplish multicomponent molecular conductors with supramolecular assemblies. In the presence of diiodoacetylene (DIA), p -bis(iodoethynyl)benzene ( p BIB), and/or tetraiodoethylene (TIE), several cation…