Materials Literature
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Domain switching behavior is studied under pulse field conditions in (1−x)Pb(Zn1/3Nb2/3)O3–xPbTiO3 single crystals oriented at various crystallographic directions. The activation energy, critical field, and domain wall mobilities are determined from simple methods earlier employed to ferroelectric single crystals by M…
Rice husk flours were analyzed by chemical composition and thermogravimetric methods in nitrogen atmosphere to discuss its feasibility as a raw material for manufacturing agricultural lignocellulosic fiber-thermoplastic polymer composite. It was revealed in the chemical composition analysis that rice husk flour was co…
A polycrystalline BaTiO3 bulk ceramic with a preferred ‹111› orientation was fabricated by the reactive templated grain growth method. A green compact was made by tape-casting of slurry containing plate-like Ba5Ti17O40 template particles and BaCO3 powder. Single phase BaTiO3 was obtained by calcining the green compact…
A brief review of silicon etching and electrochemistry provides an introduction to galvanic cell formation in silicon/metal contacts in aqueous electrolyte solutions. It is shown that such gal- vanic cells, which operate under open-circuit conditions, can be used to perform most of the functions of anodic etching and…
In situ high temperature EPR measurements of the growth of the signal of substitutional Fe(III) ions have been used to study the diffusion of Fe in the rutile form of titanium dioxide. Two preparations, characteristic of the two main processes employed for the production of titanium dioxide have been studied. The firs…
Poly(ethylene-2,6-naphthalene dicarboxylate) (PEN), a new aromatic polyester, presents high-performance physical and chemical properties and may be considered as a worthy substitute for polyethylene terephthalate (PET). Dynamic dielectric measurements were performed under isochronal conditions for twelve different fre…
This paper presents a methodical and comparative survey of magnetic force calculation methods found in literature and their relations. Further, on the basis of their physical background and of the force distributions they produce, some remarks on the use of these methods for calculating the deformation of magnetized m…
Single crystals of the sialon Ce N-phase Ce3Si8 − xAlxN11 − xO4 + x (x ≈ 1.75) were obtained via a novel route, i.e. by first preparing a fully compacted body with phase constitutions far away from thermal dynamic equilibrium by means of a fast densification technique, spark plasma sintering, and then heat treating th…
A method for representing structures of laminated electric steel is investigated. The average behavior of laminates, including eddy current effects, is approximately represented using a rate-dependent constitutive law. The accuracy of the method is studied by comparing the homogenized description with finite differenc…
Recent development in the advanced intermediate temperature (400 to 700°C) ceramic fuel cell (CFC) research brings up feasibility and new opportunity to develop innovative biomass-fuelled CFC technology. This work focuses on fundamentals of the biomass-fuelled CFCs based on available biofuel resources through thermoch…
Tensile strength of 6061–T6 aluminum alloy is presently investigated in the wide ranges of temperature and strain rate. At high strain rates a split-Hopkinson pressure bar method is adapted. Temperature and strain rate effects on the stress strain relations are clarified and can be understood in connection with the th…
The interaction of Co(acac)2 and Ta(OMe)5 in dry toluene led to formation of crystalline [Co2Ta2(acac)2(OMe)12] 1 and [Ta(acac)(OMe)4] 2 complexes. If the starting material is not completely water-free the products obtained are [Co4(acac)6(OMe)2(MeOH)2] 3 and Co(acac)2·2MeOH 4 due to hydrolysis of Ta(OMe)5 producing f…
Recently, the reaction of composite pellet consisting of the iron ore and carbonaceous materials such as coal, char and coke was investigated. The fast reaction rate and relatively low starting temperature were reported by many researchers. In such a reaction condition, the mechanism of reaction will be changed during…
The development of injectable microspheres for sustained drug delivery to the arterial wall is a major challenge. We demonstrated the possibility of entrapping an antiproliferative agent, taxol, in poly(ethylene glycol) (PEG)-coated biodegradable poly(lactic acid) (PLA) microspheres with a mean diameter of 2-6 microm.…
Using the Walker 256 model for carcinosarcoma-bearing rats, we intravenously administered 5 polysaccharide carriers with various molecular weights (MWs) and electric charges and tested for their plasma and tissue distribution. Two carriers, carboxymethylated-D-manno-D-glucan (CMMG) and CMdextran (CMDex), showed higher…
A new thermoluminescence glow curve deconvolution (GCD) function is introduced which accurately describes first order thermoluminescence (TL) curves. The new GCD function is found to be accurate for first order TL peaks with a wide variety of the values of the TL kinetic parameters E and s. The 3-parameter Weibull pro…
Note: All chapters end with a section of References. Preface INTRODUCTION OF LIQUID CRYSTALLINE MATERIALS History of development of liquid crystalline materials Classification and structure of liquid crystalline materials: Classification and structure of LCs, Classification and structure of LCPs Liquid crystal texture…
Magnetic investigations of organic conductors, β′-type [Pd(dmit)2]2, have been performed by Electron Paramagnetic Resonance (EPR) measurements. We found that most of them except one compound underwent antiferromagnetic transitions. Although they are isostructural with little differences in lattice parameters, their sp…
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This paper presents the adaptation of the Preisach model, originally developed for magnetic hysteresis, to describe mathematically the hysteresis in the resistance-temperature characteristics of vanadium-dioxide (VO/sub 2/) thin film radiation sensors. The necessary and sufficient conditions for the applicability of t…