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 study the nucleation of a new thermodynamic phase in pores and find that the nucleation often proceeds via two steps: nucleation of pore filling, and nucleation out of the pore. These two rates have opposing dependencies on pore size, resulting in a pore size at which the nucleation rate of the new phase is maximal…
The isostructural, chiral molecular magnetic materials with the formula [MxM'(2-x)(ca)2(1,4-dimb)]n [H2ca = D-(+)-camphoric acid, 1,4-dimb = 1,4-di-(1-imidazolyl-methyl)-benzene, M = Ni(II), M' = CoII, 0 < or = x < or = 2] consist of ca-bridged (4,4) layers with [M2(O2CR)4] as secondary building units that are pillare…
Ultrananocrystalline Diamond: Syntheses, Properties, and Applications is a unique practical reference handbook that brings together the basic science of nanoscale carbon structures, particularly its diamond phase, with detailed information on nanodiamond synthesis, properties, and applications. Here you will learn abo…
Highly ordered mesoporous polymer-silica and carbon-silica nanocomposites with interpenetrating networks have been successfully synthesized by the evaporation-induced triconstituent co-assembly method, wherein soluble resol polymer is used as an organic precursor, prehydrolyzed TEOS is used as an inorganic precursor,…
By combining the Dirac equation of relativistic quantum mechanics with the Bogoliubov-de Gennes equation of superconductivity we investigate the electron-hole conversion at a normal-metal-superconductor interface in graphene. We find that the Andreev reflection of Dirac fermions has several unusual features: (1) the e…
A well dispersed Co0 supported on deficient LaCo1-xO3-delta perovskite was formed after reduction of LaCoO3 by hydrogen. The formation of some metal cobalt was achieved at the first step of reduction corresponding to reduction of bulk Co3+ to Co2+. The LaCoO3 perovskites were synthesized by reactive grinding, a techni…
We present experimental evidence of relativistic fine structure in inelastic electron diffraction patterns of a crystalline solid at zone-axis orientation. Diffraction patterns formed by $200\phantom{\rule{0.3em}{0ex}}\mathrm{keV}$ electrons suffering energy losses within $10\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ of…
The mechanical response of a defective graphene layer to an ultrafast laser pulse is investigated through nonadiabatic molecular dynamics simulations. The defects are pentagon-heptagon pairs introduced by a single Stone-Wales transformation in the simulation cell. We found that when the fraction of excited electrons $…
The reaction between aquacobalamin, Cbl(H2O), and NO was studied at low pH. As previously reported, the final product of the reaction is the same as that obtained in the reaction of NO and reduced Cbl(H2O), viz. Cbl(NO-). Nevertheless, this reductive nitrosylation is preceded by a faster reaction (accompanied by small…
Abstract Single‐walled carbon nanotubes (SWNTs) produced by the arc‐discharge method using non‐magnetic catalysts were filled with Dy@C 82 endohedral metallofullerenes. Transport measurements were performed on (Dy@C 82 )@SWNT metallofullerene peapod samples in field‐effect transistor configuration at 4.2 K. After the…
A star is born: The Li26 cluster in the new intermetallic phase Li13Na29Ba19 can be described on the basis of a tetrahedral star (left) or four interpenetrating centered icosahedra (right). The M26 cluster is known from γ-brass and was predicted to be stable for Li in the gas phase. Li13Na29Ba19 contains the first exa…
Abstract Single Wall Carbon Nanotubes (SWNT) produced by “Super‐Growth” CVD technique show no evidence for non‐carbon impurities. At X‐Band frequencies an EPR signal from conduction electrons is observed at room temperature. At low temperatures the conduction electrons get trapped, leading to a sharp EPR signal with l…
Plasma-polymerized films deposited from AlAm, HxAm, NVP, NVFA, AA and FC were compared to TCPS and PS surfaces in supporting cellular attachment, viability, and proliferation in serum-based culture in vitro for extended periods of time (>7 d). Surface patterns were created using multi-step depositions with physical ma…
The thermal conductivity of all three disordered solid phases of ethyl alcohol has been measured. That for the orientationally disordered bcc phase is found to be remarkably close to that for the structurally amorphous solid, especially at low temperatures. The results, which emphasize the role of orientational disord…
Abstract Four para‐linked or meta‐linked cationic water‐soluble fluorene‐containing poly(aryleneethynylene)s (PAEs) were synthesized to investigate the solvent‐induced π‐stacked self‐assembly. These PAE backbones are composed of fluorenylene and phenylene units, which are alternatively linked by ethynylene bonds. UV–v…
A new pentanary rare-earth chalcogenide without substitutional disorder, KCaEr2CuS5, was obtained from reaction of the Er-Ca-Cu-S precursor with KBr flux by either a two-step flux method or a direct reaction of the mixture of the binary components (1Cu2S:2Er2S3:3CaS) with excess KBr as flux. KCaEr2CuS5 crystallizes in…
Supercooled liquid and glassy acetylsalicylic acid was studied using dielectric spectroscopy and deuteron relaxometry in a wide temperature range. The supercooled liquid is characterized by major deviations from thermally activated behavior. In the glass the secondary relaxation exhibits the typical features of a Joha…
Abstract Wall slip has been observed in a micro/nanometer gap during the past few years. It is difficult to make a mathematical analysis for the hydrodynamics of the fluid flowing in a gap with wall slip because the fluid velocity at the liquid–solid interface is not known a priori . This difficulty is met especially…
The dielectric properties of Ba(Mg 1/3 Nb 2/3 )O 3 (BMN)-substituted BaTiO 3 (BT) ( x BMN–(100− x )BT) ceramics, where x = 0–5 mol%, were prepared by a high-temperature solid-state reaction technique. It was found that the substitution of Mg 2+ and Nb 5+ at the Ti-site of the BMN–BT ceramics caused compositional inhom…
Novel surfaces derivatized with tertiary amine oxides have been prepared and tested for their ability to resist nonspecific protein adsorption. The oxidation of tertiary amines supported on triazine units was carried out using mCPBA to give a format allowing conjugation of biologically active ligands alongside them. A…