Materials Literature
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Sodium sulfur battery is one of the most promising candidates for energy storage application. It displays high power and energy density, temperature stability, low cost and good safety. This presentation summarizes the recent development of sodium sulfur battery, especially their applications in energy storage.
Abstract A systematic study of cathodoluminescence (CL) emission arising from free exciton recombination in diamond is given. CL spectra of free exciton emission from diamond under high excitation conditions were used to characterize properties of ultradense exciton gases at quasi‐thermal equilibrium. Theoretical spec…
Abstract Single crystals of Nd 5 (AsO 3 ) 4 Cl 3 (monoclinic, P 2/ n , Z = 2, a = 1026.0(1), b = 543.35(3), c = 1400.2(1) pm, β = 93.48(1)°) were obtained from the reaction of Nd 2 O 3 , As 2 O 3 and NaCl in a sealed silica ampoule. In the crystal structure the Nd 3+ ions are linked by AsO 3 3− groups into layers that…
In this paper, we report some preliminary measurements on the dielectric response and properties of boron nitride filled epoxy resin composites consisting of a typical anhydride cured bisphenol-A epoxy resin system. Both conventional stirring and ultrasonic processing had been used to obtain fine dispersion of the mic…
The results of INDO/s and TD-DFT calculations for neutral ZnPc (−2), unligated [ ZnPc (−1)] + and chloride anion ligated [( Cl ) ZnPc (−1)] cation radicals, the [ ZnPc (−3)] − radical anion and [ ZnPc (−4)] 2− dianion species, performed on a set of B3LYP geometry optimizations are compared with magnetic circular dichr…
Electromagnetic interference is one of the main distortion sources in scanning electron microscopy. Electromagnetic interference-generated scanning electron microscopy image distortions are usually visible as edge blur (at low scan rates) or vibration (at high scan rates). Hardware solutions to this problem, e.g. elec…
Dynamic birefringence and dynamic viscoelasticity of polymer brush type polystyrene polymacromonomer, PM, consisting of only styrene unit were measured over a wide frequency region including the glass transition region. The stress−birefringence relationship elucidated that the stress relaxation of the PM proceeded thr…
It is shown that the chemical formulas of A m−1Bi2BmO3m+3 Aurivillius phases containing perovskite-like slabs of different thicknesses can be expressed through the formulas of the simplest layered compounds and several perovskites, representing them in the form of infinite series. Those members of such series which ma…
The pressure dependence of the refractive index for a glass of the composition 0.50SiO2 · 0.25Al2O3 · 0.25CaO at pressures up to 5.0 GPa is determined using a polarizing interference microscope and an apparatus with diamond anvils. The densities and compressibilities of the glass are calculated from the measured refra…
Using cellulose acetate plastics as an example, it was shown that the search for the optimal concentrations of plasticizers should take into account the compatibility of components, as well as the thermophysical and mechanical properties of plasticized polymers. It was suggested that the temperature range of durabilit…
It is shown that the orientational structure of intermediate smectic phases can be determined using the symmetry properties of the general free energy with arbitrary orientational coupling between smectic layers, without addressing a particular model. The structure of three‐ and four‐layer intermediate phases, obtaine…
A series of poly(arylamine)s formulated as [−(Ar) m NR−] n (Ar = p -phenylene or pyridine-2,5-diyl; m = 2−4; R = H or alkyl) were prepared. Ni- or Pd-promoted dehalogenative polycondensation of the corresponding BOC- ( tert -butoxycarbonyl-) substituted dibromo monomers afforded poly(oligo- p -phenylene-amine)s, [−( p…
The elastic properties and crystal structure of the Pr1−x Sr x CoO3 system are studied. Two types of crystal structure transitions are found. For the composition x = 0.5, the monoclinic phase transforms to a rhombohedral one in the high-temperature transition (T ≈ 310 K), while the unit cell symmetry remains monoclini…
Ca Bi 2 Nb 2 O 9 (CBNO) thin films deposited on platinum coated silicon substrates by the polymeric precursor method exhibited good structural, dielectric, and piezoelectric characteristics. Capacitance-voltage measurements indicated good ferroelectric polarization switching characteristics. Remanent polarization and…
Irradiation of a folded azobenzene dendron system triggers a large, reversible structural expansion. The dendrons adopt a compact helical conformation in the stable E form owing to the E geometry of azo linkage and the syn-syn preference of the dendritic branch points. E --> Z photoisomerization disrupts this folded c…
Abstract In color symmetry the basic problem has always been to classify symmetrically colored symmetrical patterns [13]. An important step in the study of color symmetry in the hyperbolic plane is the determination of a systematic approach in arriving at colored symmetrical hyperbolic patterns. For a given uncolored…
InSb samples containing 0.22–1.42 wt % manganese were synthesized and identified. The unit cell parameter decreased as the manganese concentration increased. The samples contained microinclusions of manganese antimonides. Electrical and magnetic measurements showed two ferromagnetic phases (In1−x MnxSb solid solution…
This paper shows how, with simple modifications using either conventional or bidirectional valves, bipole and monopole systems can be connected in parallel and operated as a three pole configuration in which no earth return current flows in either normal or pole-out conditions. While slightly less efficient in terms o…
The success of high temperature gas cooled reactor depends upon the safety and quality of the coated particle fuel. The understanding and evaluation of this fuel requires the development of an integrated mechanistic fuel performance model that fully describes the mechanical and physicochemical behavior of the fuel par…
Recently, partial discharge (PD)-resistant enameled wires mixed with inorganic particles of nanometer order, referred to as the nanocomposite enameled wires, have been developed and verified to have longer life compared with conventional enameled wires. We investigated the fundamental characteristics on PD inception,…