Materials Literature
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β‐Si 3 N 4 ceramics sintered with Yb 2 O 3 and ZrO 2 were fabricated by gas‐pressure sintering at 1950°C for 16 h changing the ratio of “fine” and “coarse” high‐purity β‐Si 3 N 4 raw powders, and their microstructures were quantitatively evaluated. It was found that the amount of large grains (greater than a few tens…
Needle-like BaTiO3 particles with controlled microstructure have been prepared from the thermal decomposition of a metal-organic precursor under sample controlled reaction temperature (SCRT) conditions. In a first step, a mixed barium and titanium citrate precursor consisting of a single phase compound with controlled…
The in-situ graphitization of an as-made, large pore silica mesostructure templated by nonionic Pluronic 123 surfactant micelles provides a low cost pathway to the nanocasting of linear carbon nanotubes.
Photothermal spectroscopies, photopyroelectric and photoacoustic, were used to obtain physical parameters of polyaniline–emeraldine base (PANI-EB) and poly(o-methoxyaniline)–emeraldine base (POMA-EB), such as thermic parameters like thermal diffusivity, thermal conductivity, and specific heat. These studies were done…
Crack sealant required for an anti-oxidation SiC-coating on C/C composites was investigated with the intention of finding material effective up to approximately 1800 K. As a sealant, B2O3 is known to be effective. However, B2O3 rapidly evaporates at temperatures exceeding 1000 K. Hence, mixtures of SiO2 /B2O3 at vario…
Abstract Producing polypropylene (PP) foams with satisfactory cell morphologies in rotational foam molding is feasible. However, the narrow interval between the melting temperature of PP and the onset decomposition temperature of the applicable chemical blowing agent (CBA), and the relatively low melt strength of PP a…
The planar solid oxide fuel cell (SOFC) with a -stabilized electrolyte is expected to be a candidate for distributed power sources in the next generation due to its high efficiency of power generation. In this study, we analyzed the system performance of a SOFC/gas turbine combined cycle of about 500 kW electrical out…
A variant of Archaeoglobus fulgidus VC-16 was isolated from cultures obtained after a stepwise transfer from media containing 1.8-6.3% NaCl by a plating-independent, selected-cell cultivation technique, using a laser microscope. This variant, A. fulgidus VC-16S, had a higher growth rate throughout the salt range of th…
Substitution of a polyelectrolyte for silica during formation of surfactant-templated films produces similar nano- and macroscale structures confirming that silica acts as a polyelectrolyte during thin film self-assembly.
This paper presents the results of the characterization of porous silica films used as intermetal dielectrics. The films were fabricated via sol-gel process using tetraethyl orthosilicate (TEOS) and methyltriethoxysilane (MTES) as precursors with acid and base as catalysts. Several advanced techniques such as transmis…
The asymmetric binuclear complex [(dppe)Ni(mu-'S, S')Ni(L)](PF6)2 [L = (N, N'-diethyl-3,7-diazanonane-1,9-dithiolato)2-] shows a reversible one-electron reduction to afford a mixed-valent Ni(II) x Ni(I) species; the reduced complex has been characterised by EPR spectroscopy and mimics the redox active Nip site in the…
Mn ion implantation into single-crystal or was investigated for its effects on the magnetic properties of these materials. Following annealing at 700°C, the Mn implantation was found to induce ferromagnetic behavior for most of the concentration range investigated. For Mn implantation produced magnetic ordering temper…
Net-shape weft knitting is used to produce preforms for complex shape composite parts, as illustrated by the wheel wells of the Sunrise all-composite electric ehicle. An integrated design for the manufacturing methodology links mechanical performance to cloth and stitch design. The use of drapable net-shape fabrics wi…
Cavitation generated by DYNAJET ® cavitating jets can greatly enhance various chemical reactions, oxidize aqueous compounds, and disrupt microorganisms. Controlled laboratory experiments have established the ability of these jets to destroy microorganisms and oxidize a broad range of compounds including pesticides, Vo…
Ho Pui HoThe Chinese University of Hong KongDepartment of Electronic EngineeringShatin, N.T.Hong Kong, ChinaW. W. WongS. Y. WuCity University of Hong KongDepartment of Electronic Engineering83 Tat Chee Avenue, KowloonHong Kong, ChinaAbstract. We present a multilayered optical storage disk design basedon the use of fre…
Using a multiple-point sheet sensor (MSS), load and contact area were directly measured for compression of four different foods. The MSS provided temporal and spatial changes in stress applied on the sample surface during the testing. The sum of load value detected by the MSS corresponded to the load measured by a uni…
The effect of plasma components on the temperature-dependent content release property of thermosensitive liposomes has been described. Temperature-sensitive liposomes containing mitomycin C (MMC) were prepared from dipalmitoylphosphatidylcholine (DPPC liposomes) and a 7 : 3 mixture of DPPC and dipalmitoylophosphatidyl…
Abstract A series of triblock co‐polymers, consisting of a poly(ethylene glycol) (PEG) central block joined to two blocks of random p ‐dioxanone‐ co ‐ L ‐lactide copolymers were synthesized by ring‐opening polymerization of p ‐dioxanone (PDO) and L ‐lactide (LLA) initiated by PEG in the presence of stannous 2‐ethylhex…
Carbon buckypaper was investigated with respect to field-emission properties and long-term stability, especially under well-defined stress conditions. The carbon buckypaper field emitters showed a threshold field strength of about 1 V μm−1 for an emission current of 1 nA. Field-emission current densities of more than…
Abstract On the basis of a quantum‐statistical approach to the electrical conductivity of nonideal plasmas we derive analytical results in the classical low‐density regime, in the degenerate Born limit, and for the contribution of the Debye‐Onsager relaxation effect. These explicit results are used to construct an imp…