Phase Shift Detection: A Problem Classification
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Materials Literature
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Thermodynamics and amorphization of the copper–zirconium alloys
The vapour composition and the thermodynamic properties of Cu–Zr alloys in the liquid and solid states have been studied by Knudsen-cell mass spectrometry over the temperature (701–1823 K) and composition (5.1–97.3 mol% Zr) intervals. The accessible temperature range has been enhanced by chemically generating volatile…
Endothelialization of Small-Diameter Vascular Prostheses
In the field of arterial vascular reconstructions there is an increasing need for functional small-diameter artificial grafts (inner diameter < 6mm). When autologous replacement vessels are not available, for example because of the bad condition of the vascular system in the patient, the surgeon has no other alternati…
Compatibilised blends of LDPE and PDMS rubber as effective cable insulants
Blends of low density polyethylene (LDPE) and poly(dimethyl siloxane) rubber (PDMS) compatibilised with ethylene methyl acrylate (EMA) have been found to be effective heat resistant cable insulants. Various electrical, mechanical, and thermal properties have been studied. From these studies, it can be concluded that t…
Electrochemical Polishing of Boron-Doped Diamond in Organic Media
The electropolishing of a boron-doped diamond (BDD) film deposited by chemical vapor deposition has been studied in acetic acid- media. The electropolished surface has been characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical measurements. The results have sh…
Photografting of poly(hydroxylethyl acrylate) onto porous polyurethane scaffolds to improve their endothelial cell compatibility
In order to improve the cytocompatibility of polyurethane (PU) porous scaffolds obtained by thermally-induced phase separation, poly(hydroxylethyl acrylate) (PHEA) was covalently immobilized by grafting copolymerization of HEA by photo-oxidation of the scaffolds and initiation of UV light. FT-IR-ATR spectroscopy and X…
Tensile Properties of Directionally Solidified AZ91 Mg Alloy
AZ91 Mg alloy consisting of elongated grains was processed by a directional solidification method and mechanical properties of the directionally solidified Mg alloy were compared with those of the non-directionally solidified Mg alloy by tensile tests at room temperature and at 473 K. The directionally solidified Mg a…
Fracture Toughness Evaluated by Indentation Methods and Its Relation to Surface Energy in Silicon Single Crystals
Fracture toughness of silicon crystals has been investigated by indentation methods, and their surface energy has been calculated using molecular dynamics (MD). When a conical indenter was forced into a (001) silicon wafer at room temperature, {110} cracks were mainly introduced from the indent, indicating that fractu…
Effect of a Lateral Chloro Group on Azomesogens Containing the Naphthalene Moiety
A homologous series of azomesomesogens, 2"[4-(4'-n-alkoxybenzoyloxy)-3-chloro phenylazo] naphthalene, with lateral chloro group was synthesized. All twelve homologues of the series synthesized exhibit enantiotropic nematic mesophase. The plot of transition temperatures against the number of carbon atoms in the alkoxy…
A Study on the Synthesis and Properties of Polyurethane/Clay Nanocomposites
Polyurethane/organophilic montmorillonite (PU/OMT) nanocomposites based on polyether, organophilic montmorillonite, phenylmethane diisocyante, diglycol, and glycerine were synthesized and characterized by x-ray diffraction (XRD). Delaminated or intercalated structures in polyurethane/OMT nanocomposites with different…
Synthesis and luminescence behaviour of novel heterodecanuclear silver( i )–rhenium( i ) alkynyl complexes. X-Ray crystal structures of [Ag 6 (μ-dppm) 4 {μ 3 -CCCC–Re(Me 2 bpy)(CO) 3 } 4 ](PF 6 ) 2 and [Ag 6 (μ-dppm) 4 {μ 3 -CCCC–Re(Br 2 phen)(CO) 3 } 4 ](PF 6 ) 2
A novel series of luminescent heterodecanuclear mixed-metal alkynyl complexes, [Ag6(mu-dppm)4[mu3-C[triple bond]CC[triple bond]C-Re(N--N)(CO)3]4](PF6)2, (N--N = tBu2bpy, Me2bpy, phen, Br2phen), have been successfully synthesized; the X-ray crystal structures of [Ag6(mu-dppm)4[mu3-C[triple bond]CC[triple bond]C-Re(Me2b…
Numerical Analysis of Peirce's Cantilever Test for the Bending Rigidity of Textiles
This paper deals with the numerical analysis of a test for the bending rigidity of textiles as proposed by Peirce. The mathematical model treats textile product as an elastica which is subject to large deflections. The results of the numerical calculations discussed in this paper are presented on the relevant graphs.…
Effect of Viscosity on Low Density Foaming of Poly(Ethylene-Co-Octene) Resins
Foaming of low density poly(ethylene-co-octene) resins by injection molding is the result of various reactions occurring during the process. This includes simultaneous decomposition of the chemical blowing agent and cross-linking of the polymer matrix during curing in the mold, followed by foaming after mold opening.…
Spreading of aqueous liquids in unsized papers is by film flow
We use cryo-scanning electron microscopy to visualize the penetration of a wetting fluid into various bleached softwood kraft papers. The results indicate that the fluid movement is due primarily to the advance of the wetting fluid in the form of bulk liquid films along channels formed by fibre overlaps. This is in co…
A photochromic thiophenophan-1-ene
A thiophenophan-1-ene, of which two thiophene rings are bridged at 2- and 4-positions, was synthesized and its quantum yield for the photocyclization reaction was increased due to fixation to the photoactive anti-conformation.
Tensile Properties and Press Formability of a Mg-9Li-1Y Alloy Sheet
The formability of an experimentally produced Mg-9%Li-1%Y alloy sheet with a thickness of 0.6 mm is investigated. Uniaxial tension tests and some fundamental press-forming tests, such as stretching, deep-drawing, and bore-expanding tests, are carried out at room temperature. The sheet has sufficiently high ductility u…
Electrochemical Characterization of Carbon Films with Porous Microstructures
This paper describes the structural and electrochemical characterization of porous carbon thin film electrodes formed via a recently developed film fabrication technique called glancing angle deposition (GLAD). The technique involves physical vapor deposition of thin films onto unheated substrates oriented at highly o…
Comparison of Crystal Field Dependent andIndependent Methods to Analyse Lanthanide InducedNMR Shifts in Axially Symmetric Complexes.Part II: Systems with a C4 Symmetry Axis
Analysis of the LIS data for several series of Ln(3+) complexes of C(4) symmetry in terms of structural changes, crystal-field effects and/or variation of hyperfine constants along the lanthanide series was undertaken using a combination of the two-nuclei and three-nuclei techniques together with the classical onenucl…
Grafting polythiophene on polyethylene surfaces
Abstract Polythiophene (PT) was grafted on PE film using three reaction steps. First, PE films were brominated in the gas phase, yielding PE–Br; second, a substitution reaction of PE–Br with 2‐thiophene thiolate anion gave the thiophene‐functionalized PE; finally PT was grafted on the PE surface using chemical oxidati…
Ferroelectric Phase Transitions in Nano-Scale Chemically Ordered PbSc 0.5 Nb 0.5 O 3 Using a First-Principles Model Hamiltonian
Effects of chemical order, disorder, short range order, and anti-phase boundaries on phase transitions and dielectric properties of PbSc 1/2 Nb 1/2 O 3 are studied through molecular dynamics simulations of a FP model. Simulations of large systems are required to capture these effects, and we present an efficient recip…