Materials Literature
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Semiconducting copper(I) oxide nanowires were fabricated by electrochemical deposition into porous polycarbonate membranes from a copper lactate electrolyte. Nanowire composition and structure were varied by controlling the deposition potential and deposition rate, respectively. Nanowires formed at more negative poten…
The double stranded CuII2 metallacyclic complex of formula [Mn(hfac)2(H2O)2][Cu2(mbpb)2(CH3CN)2] (1) and the triple stranded NiII2, ZnII2 and CoIII2 metallacyclic complexes of formula [M2(Hmbpb)3]X·nH2O (M = ZnII, X = NO3− (2), n = 17; M = NiII, and X = ClO4− (3), n = 15) and [Co2(mbpb)3]·19H2O (4) (H2mbpb is the bisb…
Intense Red and Yellow Emissions from Sr2SiO4 : Eu3 + ( Eu2 + ) Electrospun Nanofibers, Dong, Guoping, Xiao, Xiudi, Liu, Xiaofeng, Qian, Bin, Zhang, Qiang, Lin, Geng, Ma, Zhijun, Chen, Danping, Qiu, Jianrong
The present paper describes the grain size refinements of Cu-3 mass%Ti alloys by hydrogen heat-treatment of so-called Hydrogenation-Disproportionation-Desorption-Recombination (HDDR) process. During hydrogenation process, the disproportionation reaction occurred with forming of Ti hydrides in the alloy. With decomposi…
Reaction of hydrazine and 3‐hydroxy‐2‐naphthoic acid with some transition metal ions forms two types of complexes: (i) [M(N 2 H 4 ){C 10 H 6 (3‐O)(2‐COO)(H 2 O) 2 ] where M=Ni, Co, Cd and Zn, at pH 9 and (ii) [M(N 2 H 5 ) 2 {C 10 H 6 (3‐O)(2‐COO)} 2 ].xH 2 O where M=Ni & x =1; M=Co, Cd, Mn & x=3; and M=Zn, Cu…
Ca-Ir-O compounds in various molar ratios of Ir to Ca (RIr/Ca) from 0.2 to 1.2 were synthesized by solid-state reaction and compacted by spark plasma sintering (SPS). Ca4IrO6 and CaIrO3 with a small amount of second phase were obtained at RIr/Ca=0.25 and 1.0, respectively, whereas Ca2IrO4 in a single phase was obtaine…
Texture observations, second harmonic generation (SHG) and X-ray diffraction measurements have been carried out in the B4 phase of two classical bent-core liquid crystals. Several sample geometries have been used for the different techniques, including a well-aligned cell for the optical studies. An indexation of the…
A novel tripodal ligand with three different arms, viz., pyridine, phenol and an oxime and its copper(II) complex were synthesised. The X-ray crystal structure of the compound reveals that it is a dinuclear complex consisting of two copper(II) ions doubly bridged by two oximato groups in a trans arrangement. The compl…
A new compact but accurate Verilog-A model for Multi-Level-Cell Phase-change RAMs is proposed in this paper. The previous circuit-based SPICE macromodel has to have a very complicated circuit to describe multi-level resistance thus it needs a long simulation time and occupies large computer memories. This new Verilog-…
ZnS thin films are deposited on porous silicon (PS) substrates with different porosities by pulsed laser deposition (PLD). The photoluminescence (PL) spectra of the samples are measured at room temperature. The results show that the PL intensity of PS after deposition of ZnS increases and is associated with a blue shi…
Y3Al5O12 (YAG) single crystals doped with vanadium ions (V 3+ ) were obtained by the Czochralski method. The X-ray photoelectron spectra of YAG:V annealed in reducing atmospheres: H2, vacuum and H2 + vacuum are presented and compared with the spectra of the YAG ceramics. The X-ray photoelectron spectra showed that the…
The effects of phase separation on the crystallization behavior of glasses were investigated in order to materialize a high-luminous glass-ceramic phosphor, which consists of fine phosphor crystals and a transparent glass matrix prepared due to phase separation. The glass ceramics in BaO-TiO2-SiO2 has the potential to…
The synthesis of platinum(0) nanoparticles by decomposition of Pt2(dba)3 under a dihydrogen or CO atmosphere and in the presence of heavily fluorinated stabilizers is described. Several techniques were used for the characterization of the obtained nanomaterials (TEM, HREM, WAXS and SEM-FEG) that organize into spherica…
Using an oxidized state of a dithiolene ligand, diisopropylpiperazine-2,3-dithione (i-Pr(2)Pipdt), two monooxo-molybdenum complexes have been synthesized. From one of them, a desoxomolybdenum cluster, [(i-Pr(2)Pipdt)Mo](4)[BF(4)](4) has been prepared. The molecular structure of this cluster reveals metal-metal interac…
The synthesis, crystal structure, Raman spectra, XP spectra, conductivity and magnetism of a charge-transfer salt of BEDT-TTF and oxalato-metalate: (BEDT-TTF)5Fe(C2O4)3(H2O)2CH2Cl2 (1) are described and interpreted. Electrochemical oxidation of neutral BEDT-TTF in the presence of (Et4N)3Fe(C2O4)3 in CH2Cl2 solution yi…
A novel sheet specimen geometry for dynamic pure-shear experiments is proposed. Finite element simulations in ABAQUS/Explicit are used to optimize the specimen geometry. Main objective is to obtain a homogeneous stress state with a low stress tridxiality in the specimen zone subjected to shear. The proposed geometry i…
In order to develop water-soluble porphyrins, alkyloxo(methoxo)porphyrinatoantimony bromides (alkyl = hexyl (1a), decyl (1b), dodecyl (1c), tetradecyl (1d), octadecyl (1e)) were prepared. 1 had more than 1 mmol dm(-3) of solubility in water. From the dependence of the half-width of the bands in the absorption spectra…
Electrospun Al2O3-TiO2 composite fibers were fabricated and characterized. Morphologies of the fibers after calcination at 500, 1000 and 1150°C, respectively, were examined by SEM, which showed that the diameters of the fibers decreased with increasing calcination temperature. XRD and TGA/DTA revealed that the Al2O3-T…
We report a single-step, solution-based synthesis even at room temperature utilizing a facile sonochemical method to fabricate ZnO nanocrystalline films consisting of well-aligned nanorods.
The present paper proposes a refined nonlinear axial bearing model not too complex for real-time applications, which may potentially improve the estimator quality of modulation-based self-sensing. Measurements show that the AC component (ripple) of the bearing current is an underlinear function of the AC excitation vo…