Materials Literature
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Aerosol deposition (AD) is applicable as a fabrication technology for microstructures comprising different materials. We used this method for electronic devices that consist of ceramic films and metal electrodes. Various ceramic thick films (5–50 μm thickness), for example, Al 2 O 3 , 2MgO·SiO 2 , and BaTiO 3 , were d…
Various systems of permanent magnets with a large magnetic anisotropy, in which strong stray magnetic fields are generated, have been calculated. A classification of the magnet systems and corresponding strong fields into linear and point systems is suggested. It is shown that the greatest linear field can be obtained…
Laboratory radial in- and out-diffusion experiments were performed to investigate the reversibility of the iodide (I - ) uptake by argillaceous rocks from the Tournemire site (France). At first, the suitability of the method was demonstrated by means of deuterium depleted water (DDW) diffusion experiments. The values…
Electron diffraction and high-resolution electron microscopy of LaMnO 3- δ (0 ≤ δ ≤ 0.25), obtained by topotactic reduction of LaMnO 3, shows that an ordered pathway of anionic vacancies is only obtained for δ = 0.25. La 4 Mn 4 O 11 is an eightfold superlattice of the perovskite-type structure due to the ordered inter…
Abstract Fracture-mechanics experiments were carried out on ultrafine-grained (UFG) samples of copper, titanium and an Al alloy to obtain the fracture behaviour under static and cyclic loading. The UFG-materials investigated show crack resistance behaviour under static loading, which was confirmed by ductile fracture…
A Commentary on the paper ”Homologous series of liquid‐crystalline metal free and copper octa‐n‐alkoxyphthalocyanines„, by J. F. van der Pol, E. Neeleman, J. W. Zwikker, R. J. M. Nolte, W. Drenth, J. Aerts, R. Visser and S. J. Picken. First published in Liquid Crystals, 6, 577‐592 (1989).
Differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) were performed on wood samples of different essences (fir, chestnut, poplar, linden and oak) before consolidation. A kinetic analysis was applied on the two-steps decomposition processes occurring in all wood samples using either the multiheat…
Carbon nanotube (CNT)/elastomer nanocomposites (CECs) are flexible and easy to fabricate accordng to the required size and form. We succeeded in realizing a uniform dispersion of CNTs in the elastomer matrices of natural rubber (NR). Intense electron emission from the CEC sheets has been confirmed; the threshold elect…
Emission dynamics of the organic semiconductor material thiophene/phenylene co-oligomer (TPCO) single crystals has been studied under high-density optical excitation at 5 K. The optical amplification phenomenon is observed both on 0–1 and 0–2 vibration transitions, where these intensities increase superlinearly with t…
Two types of optical recording crystalline material Ge 2 Sb 2 Te 5 have been studied by neutron and X-ray powder diffraction measurements. One is the crystalline cubic-phase Ge 2 Sb 2 Te 5 . The other is nanocrystalline-phase Ge 2 Sb 2 Te 5 . In the former, a large atomic displacement of germanium atoms was found by t…
Exfoliation corrosion (EFC) of AA7178 (UNS A97178) has been quantitatively studied using the exfoliation of slices in humidity (ESH) test, which measures exfoliation layer thickness of the specimens as a function of time in a humid environment after an electrochemical pretreatment. The effects of relative humidity (RH…
High-pressure phase stabilities of the CaSnO 3 system were investigated using density functional theory static lattice energy calculations. We have identified six phase changes in this system: perovskitepost-perovskite, post-perovskite-B2+cotunnite in CaSiO 3 , B1-B2 in CaO, cassiterite-pyrite, pyriteorthorhombic-I, a…
Perovskite-type La 1- x Bi x MnO 3 (LBMO) crystals, which were prepared by doping a Bi atom for a La atom in LaMnO 3 , were shown to exhibit the colossal magnetoresistance (CMR) effect. Samples were produced by sintering in an air atmosphere that depended on the Bi composition ratio x . X-ray diffraction measurements…
Single-walled carbon nanotubes (SWCNTs) were directly synthesized by a hydrogen arc-discharge method by using only Fe catalyst. The synthesized carbon materials indicated high-purity SWCNTs without amorphous carbon materials from SEM observation. The SWCNTs had diameters of 1.5-2.0 nm from TEM and Raman observation. A…
This paper summarizes the mechanical properties of recently developed Oxide Fiber Composites (OFCs) consisting of high‐strength continuous oxide fibers embedded in an oxide matrix. The OFCs exhibit a favorable combination of high strength and damage tolerance due to unusual homogeneous microstructures. The tensile beh…
RUTH C. BORNER†, RICHARD J. BUSHBY*‡ and ANDREW N. CAMMIDGE§ †Floraroma Ltd., Teddington, Middlesex, TW11 8EE, UK ‡Centre for Self‐Organising Molecular System (SOMS), University of Leeds, LS2 9JT, ...
Abstract Polymer/layered filler nano-composites (PLFNCs) offer remarkably improved mechanical properties with low inorganic filler loading. Major developments in this field have been carried out over the last one and half decades. However, we are far from the goal of understanding the mechanisms of the enhancement eff…
We report the characterization of 3 new repetitive sequences from the bivalve mollusc Mytilus galloprovincialis, designated Mg1, Mg2, and Mg3, with monomer lengths of 169, 260, and 70 bp, respectively. The 3 repeats together constitute approximately 7.8% of the M. galloprovincialis genome and were found, together with…
Abstract Summary: An O ‐hexyl‐3,5‐bis(terpyridine)phenol ligand has been synthesized and transformed into a hexagonal Zn(II)‐metallomacrocycle by a facile self‐assembly procedure capitalizing on terpyridine‐Zn(II)‐terpyridine connectivity. The structural composition was confirmed by NMR and mass spectral techniques; p…
The influence of source conditions on vanadium-carbon cluster formation in a methane-vanadium plasma is explored and analyzed by photoelectron spectroscopy, revealing that the metal-carbon ratio has substantial influence over the cluster products. Experiments that employ large methane content produce carbon-rich mono-…