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 prepared silver particle dimers with single Cy5 molecules localized between coupled metal particles. The silver particles with a 20 nm diameter were chemically bound with single-stranded oligonucleotides. The dimers were formed by hybridization with double-length single-stranded oligonucleotides that contained sing…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTOn the Controllable Soft-Templating Approach to Mesoporous SilicatesYing Wan and ZhaoView Author Information Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Molecular Engineering of Polymers, and Advanced Materi…
According to the literature high voltage transmission line problems are faced using conventional analytical methods, which include in most cases empirical and/or approximating equations. Artificial intelligence and more specifically artificial neural networks (ANN) are addressed in this work, in order to give accurate…
Abstract Subwavelength focusing by an ensemble of magnetically coupled metamaterial elements is studied theoretically for the case when all the dimensions are small relative to the electromagnetic wavelength. It is shown that in contrast to expectation a focus can be placed in any desired position for any transmitter‐…
Polyacrylamide/MWNTs nanocomposite is prepared using MWNTs functionalized with carboxylic acid or carboxylic anion groups. The modified MWNTs show significantly improved colloidal stability without aggregation in aqueous acrylamide solution. The solution was in-situ polymerized to give a well-dispersed PAAm/MWNTs nano…
This study reports an extensive kinetic investigation of the CO + N 2 O reaction which is a major reaction involved with automotive exhaust catalysts during the overall reduction of NO, particularly during the start of a cold engine. Steady-state rate measurements were performed between 217 and 250 °C on Pt−Rh/γ-Al 2…
Abstract The linear‐hyperbranched block copolymers, in which the linear polytetrahydrofuran (PTHF) is linked to the apex of hyperbranched poly(phenylene sulfide) (HPPS‐SH), have been synthesized, and the synthesis includes condensation polymerization of 2,4‐dichlorobenzenethiol, subsequent transformation of the result…
We investigate the thermal conduction properties of a one-dimensional lattice of atoms carrying classical spins and coupled vibrationally. The spin degrees of freedom interact via a classical Heisenberg interaction, while the vibrational degrees of freedom are coupled through nearest-neighbor linear as well as nonline…
The structural and magnetic properties of tetragonal $R{\mathrm{Fe}}_{x}{\mathrm{Mn}}_{12\ensuremath{-}x}$ ($R=\mathrm{Gd}$, Tb, Dy) compounds have been extensively studied by means of dc and ac susceptibilities, x-ray absorption spectroscopy at $\mathrm{Gd}\text{\ensuremath{-}}{L}_{III}$ edge, and neutron-powder-diff…
Abstract A microemulsion polymerization for the synthesis of poly(3,4‐ethylenedioxythiophene) (PEDOT) nanoparticles is described. Spherical and electrically conducting PEDOT particles with diameters as small as 27 ± 8 nm were obtained by using decyltrimethylammonium bromide as a cationic surfactant. PEDOT nanoparticle…
Abstract Poly( ε ‐caprolactone) (PCL)/montmorillonite (MMT) nanocomposites were prepared by in situ ring‐opening polymerization of ε ‐caprolactone in the presence of MMT modified by hydroxyl‐group containing alkylammonium cation (Cloisite®30B) in a single mode microwave oven. For the polymerization mixtures, plateaus…
Abstract A melt compounding process was used to prepare hybrid nanocomposites based on natural rubber (NR) and montmorillonite (MMT) modified with octadecylamine. Cured rubber was subjected to complex testing. Most likely modified MMT participates in physical networking of a low‐temperature topological region (soft am…
Abstract We propose a Galerkin finite element method for numerically modeling the process of heat and moisture transfer in porous clothing assemblies, which takes into account radiative heat transfer and sorption of water vapor into the fibers of the medium. We prove an optimal‐order error estimate for the finite elem…
Differential growth: The growth of crystals of α-resorcinol (see picture; C gray, H white, O red) from the vapor phase is asymmetric along the polar axis. By means of molecular-dynamics simulations, the slower growth at the (011) polar surface is traced back to conformational change of the molecule and to surface reco…
This investigation describes an optically transparent antistatic film composed of antimony-doped tin oxide (ATO) nanoparticles dispersed in a polymer matrix, with remarkably improved electrical and optical properties. The film is fabricated on the basis of a synergistic interaction between self-assembling nanoparticle…
The absorption and emission electronic and vibrational Raman spectra of a series of tetrathiafulvalene compounds have been recorded, assigned with the guide of density functional theory calculations, and interpreted according to their chemical nature of the introduced modifications of the tetrathiafulvalene unit. It t…
Double-hydrophilic block copolymer (DHBC)-directed mineralization is investigated by dissipative particle dynamics (DPD) simulation. By mineralization, we refer to the formation of inorganic crystals from the solution. In the current study, the DHBCs are modeled as chains of A and B blocks with repulsion between unlik…
We study bulk and interfacial properties of a model suspension of hard colloidal platelets with continuous orientations and vanishing thickness using both density functional theory, based on either a second virial approach or fundamental measure theory (FMT), and Monte Carlo (MC) simulations. We calculate the bulk equ…
A series of polyphenylene dendrimers (PDs) incorporating additional pentafluorophenyl units have been synthesized. A key building block thereby is the tetrakis(pentafluorophenyl)cyclopentadienone, which serves as the end-capper for making the outer shells of the dendrimers. The variation of the peripheral pentafluorop…
We present the 2D self-assembly properties of an amyloid-like peptide (LSFDNSGAITIG-NH2) (i.e., LSFD) over a whole range of spatial scales. This peptide is known to adopt an amyloid-like behavior in water where it aggregates into fibrils. Monolayers of this 12 amino acid peptide were built by direct spreading and comp…