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。
Silver colloids are one of the extensively employed surface-enhanced Raman scattering (SERS) active substrates. To obtain the SERS effect, their aggregation upon addition of analyte is necessary. However, problems of instability and irreproducibility in the magnitude of the signal are caused by the formation of aggreg…
Sonochemiluminescence (SCL) of luminol due to a single bubble is studied through spectral measurement. No SCL was observed from a stable single bubble that emitted high-intensity sonoluminescence (SL). In contrast, SCL was observed under conditions of an unstable dancing bubble, where a bubble grows and ejects tiny bu…
An amphiphilic metallo-supramolecular polystyrene- block -poly(ethylene oxide) diblock copolymer containing a bis(2,2‘:6‘,2‘ ‘-terpyridine)ruthenium(II) complex (PS 20 -[Ru]-PEO 70 ) as a supramolecular connection between the two constituting blocks has been compared to the covalently bonded counterpart (PS 22 - b -PE…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTDispersion and Solubilization of Single-Walled Carbon Nanotubes with a Hyperbranched PolymerAlexander Star and J. Fraser StoddartView Author Information Department of Chemistry and Biochemistry, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California…
The predictions of a nonequilibrium schematic mode-coupling theory developed to describe the nonlinear rheology of soft glassy materials have been numerically tested in a sheared binary Lennard-Jones mixture. In this Letter, we focus on the existence, behavior, and properties of an effective temperature T(eff) for the…
We have characterized the frictional properties of nanostructured (ns) carbon films grown by Supersonic Cluster Beam Deposition (SCBD) via an Atomic Force-Friction Force Microscope (AFM-FFM). The experimental data are discussed on the basis of a modified Amonton's law for friction, stating a linear dependence of frict…
We study the linear dynamic mechanical response of monodomain nematic liquid crystalline elastomers under shear in the geometry that allows the director rotation. The aspects of time-temperature superposition are discussed at some length and Master Curves are obtained between the glassy state and the nematic transitio…
The photocatalytic activity for water decomposition of RuO 2 -dispersed ZnGa 2 O 4 with an octahedrally coordinated Ga 3+ ion was studied in order to examine the photocatalytic properties of p-block metal oxides with d 10 configuration. ZnGa 2 O 4 was impregnated with Ru 3 (CO) 12 or Ru(C 5 H 7 O 2 ) 3 in THF and oxid…
Triangular silver nanoparticles ( approximately 100 nm wide and 50 nm high) have remarkable optical properties. In particular, the peak extinction wavelength, lambda(max) of their localized surface plasmon resonance (LSPR) spectrum is unexpectedly sensitive to nanoparticle size, shape, and local ( approximately 10-30…
Two-dimensional x-ray diffraction (XRD 2 ) refers to x-ray diffraction applications with two-dimensional (2D) detector and corresponding data reduction and analysis. The two-dimensional diffraction pattern contains far more information than a one-dimensional profile collected with the conventional diffractometer. In o…
Abstract The surface free energy of crosslinked photodefinable epoxy (PDE) was evaluated from the advancing contact angles measured by the sessile drop method. Poly(tetrafluoroethylene) (PTFE) was used as a reference material in the evaluation of the surface free energies by various models. Pure water, diiodomethane,…
Abstract The crystallization of a high‐density polyethylene was analyzed with differential scanning calorimetry (DSC) measurements. An intense transcrystallinity was observed at the contact between the polymer and the DSC pans. The modification of the crystallization kinetics induced by this phenomenon was studied as…
Abstract We report the results from tensile creep tests performed on an epoxy resin in the presence of carbon dioxide at different pressures ( P co 2 ) and at a constant temperature below the glass‐transition temperature. Time‐ P co 2 superposition was applied to the data to account for the plasticization effect becau…
Abstract For a more complete understanding of the toughening mechanism of polypropylene (PP)/ethylene‐propylene‐diene rubber (EPDM) blends, dynamic packing injection molding was used to control the phase morphology and rubber particle orientation in the matrix. The relative impact strength of the blends increased at l…
Abstract The influence of the elongation rate and temperature on the ultimate tensile properties of melt‐crystallized linear polyethylene solids was investigated, with a double‐edge‐notched specimen to avoid necking, in which uniform deformation could be assumed throughout the experiment. The data on ultimate properti…
Measurements of internal strain development during in-situ deformation of a textured magnesium alloy plate represent the first direct observations of intergranular (type II) strains, which allow for definitive statements about the magnitude of stresses within (i) parent grains when mechanical twins are beginning to fo…
We describe all endomorphisms of the (finite) Brauer semigroup, its partial analogue and the semigroup of all partitions of a -element set.
Systematic investigation of the stability of mono-, bis-, and tris-terbium(III) complexes with dipicolinic acid is reported. The formation constants were extracted from emission titration data. For this purpose, a mathematical formalism for two complexation models was developed. Comparative studies were conducted by v…
Nucleation kinetics of tetragonal hen egg-white lysozyme obtained by the method of initial rates are reported. Sodium chloride (NaCl), ranging in concentration from 2% (w/v) to 7% (w/v), was used as the precipitant. Data are modeled using an empirical kinetic expression based on classical nucleation theory. The expres…
Cellulose-based filter paper was plasma treated for hydrophobicity and the permeation of the coating investigated. A five-layer stack of filter paper was the model porous medium and perfluoromethylcyclohexane (PFMCH) was the model monomer used in this study. Water-drop-absorption time (time needed for certain size dro…