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。
Enhancing the capacity and selectivity of adsorbent materials was critical for removing the sulfur-containing pollutants from industrial effluents and fuels. CO 3 2– and dodecylsulfate intercalated ZnAl layered double hydroxides (denoted as CO 3 -LDH and DDS-LDH, respectively) were used as functional adsorbents for th…
Raman spectroscopy results obtained under visible (non-resonant) and UV (resonant) excitation for nanocrystalline ZnO, ZnO:Mn and ZnO:Mn:Al thin films grown by radio frequency magnetron sputtering are presented and compared. The origin of the multiple longitudinal optical (LO) phonon Raman peaks, strongly enhanced und…
Abstract Ru II ‐ and Ru III ‐substituted α‐Keggin‐type phosphotungstates with a dimethyl sulfoxide (DMSO) ligand, [PW 11 O 39 Ru II DMSO] 5– ( 1 ) and [PW 11 O 39 Ru III DMSO] 4– ( 2 ), were synthesized. Compound 1 was prepared by reaction of [PW 11 O 39 ] 7– with [Ru II (DMSO) 4 ]Cl 2 in water at 125 °C under hydroth…
We use density functional theory to examine methane dissociative adsorption on La 2 O 3 substitutionally doped with Cu, Mg, or Zn. We find that these dopants activate the surface oxygen atoms and make methane dissociation exothermic. Cu-doped lanthana is very active, but it loses oxygen too easily and the surface is l…
The absolute configuration of a binaphthyl-azobenzene dyad 2b, which has a chiral axis and a chiral plane, was determined by comparing the experimental circular dichroism (CD) spectra with the theoretical CD spectra calculated by the time-dependent (TD)-DFT method. The CD signals of the trans-azobenzene moiety indicat…
The geometry and electronic structure of copper-based p-type delafossite transparent conducting oxides, CuMO(2) (M = In, Ga, Sc), are studied using the generalized gradient approximation (GGA) corrected for on-site Coulomb interactions (GGA + U). The bonding and valence band compositions of these materials are investi…
Abstract Ethylene‐propylene‐diene‐terpolymer (EPDM) and polypropylene (PP)‐based uncross‐linked and dynamically cross‐linked blends were prepared both in an internal mixer and in a corotating twin‐screw extruder. The effects of composition, plasticization and mixing equipment on the morphology development and the fina…
Conductivity, complex permittivity, and shielding effectiveness (SE) of single- and multiwalled carbon nanotube (SWCNT and MWCNT) composites prepared by ultrasonication dispersion were investigated experimentally. As compared with a manual process, ultrasonication dispersion was able to reduce percolation threshold of…
Based on first-principles calculations, the geometric, electronic, and magnetic properties as well as the relative stability of the fully hydrogenated and semihydrogenated AlN nanosheets (NSs) have been investigated. The results show that different with the bare graphite-like AlN NSs terminating with polar (0001) surf…
Azobenzene-based self-assembled monolayers (azo-SAMs) are photoactive and become orientationally ordered when illuminated with linearly polarized light (LPL), making them attractive as dynamic alignment layers in liquid crystal cells. Azo-SAMs, however, are chemically unstable when exposed to both air and light. We ha…
Abstract Catalyst design and evaluation is a multifactorial multiobjective optimization problem and the absence of well‐defined mechanistic relationships between wide ranging input‐output variables has stimulated interest in the application of artificial neural network for the analysis of the large body of empirical d…
Surface-enhanced Raman scattering (SERS), electrochemistry, and generalized two-dimensional correlation analysis (G2DCA) methods were used to define neuromedin B (NMB) ordered superstructures on Ag, Au, and Cu electrode surfaces at different applied electrode potentials in an aqueous solution at physiological pH. The…
Large-area graphene is synthesized by Cu-catalyzed chemical vapor deposition (CVD), transistors are constructed, and the dc/RF performance is examined. Top-gate transistors, i.e., with a gate length of 3 μm and Vds= 5 V, have a peak dc transconductance in excess of 20 mS/mm and a drive current of 0.5 A/mm. RF measurem…
Cyclotron resonance in bilayer graphene is studied with weak electron-hole asymmetry suggested by experiment taken into account and with the focus on many-body corrections that evade Kohn's theorem. It is shown by direct calculation that the theory remains renormalizable to $O({e}^{2})$ in the presence of electron-hol…
The mechanical behavior of graphene under various indentation depths, velocities, and temperatures is studied using molecular dynamics analysis. The results show that the load, elastic and plastic energies, and relaxation force increased with increasing indentation depth and velocity. Nanoindentation induced pile ups…
Abstract Two series of anode supported solid oxide fuel cells (SOFC) were prepared, one with a composite cathode layer of lanthanum strontium manganite (LSM) and yttria stabilized zirconia (YSZ) on top and the other further has a LSM current collector layer on top. The fuel cells were heat treated at 1,000 °C in air o…
Holes bound to acceptor defects in oxide materials usually need comparatively high energies, of the order of 0.5-1.0 eV, to be ionized thermally to the valence band maximum. It is discussed that this has to be attributed to the stabilization of such holes by mainly short range interactions with the surrounding lattice…
Abstract The properties of polypropylene (PP) foams can be extended by controlling the cellular structure and adding functional fillers. PP‐based microcellular foams having an interesting combination of mechanical and transport properties were prepared by two different batch foaming processes. The batch processes empl…
Abstract The thermal properties, crystallization, and morphology of amphiphilic poly( D ‐lactide)‐ b ‐poly( N , N ‐dimethylamino‐2‐ethyl methacrylate) (PDLA‐ b ‐PDMAEMA) and poly ( L ‐lactide)‐ b ‐poly( N , N ‐dimethylamino‐2‐ethyl methacrylate) (PLLA‐ b ‐PDMAEMA) copolymers were studied and compared to those of the c…
Neutron diffraction is used to show that small (∼7 MPa, or 70 bar) uniaxial pressure produces significant changes in the populations of magnetic domains in a single crystal of 2% Nd-doped bismuth ferrite. The magnetic easy plane of the domains converted by the pressure is rotated 60° relative to its original position.…