Materials Literature
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A good magnetostrictive material should have large saturation magnetostriction (λS) and low saturation (or anisotropy) field (HS), such that its magnetostriction susceptibility (SH) can be as large as possible. In this study, we have made Fe62Co19Ga19/Si(100) nano-crystalline films by using the dc magnetron sputtering…
Abstract Fine particles of ZnFe2O4 were synthesized by a wet chemical method in the (80 wt.% Fe2O3 + 20 wt.% ZnO) system. The morphological and structural properties of the mixed system were investigated by scanning electron microscopy, X-ray diffraction, inductively coupled plasma atomic emission, and X-ray photoelec…
We report on the first NMR study of powder and single crystal samples of thallium indium sulfide, TlInS(2). The crystal under study is a pure single-layer TlInS(2) polytype. Our findings show that transformation from the high temperature paraelectric phase to the low temperature ferroelectric phase occurs via an incom…
Drug delivery to the central nervous system (CNS) is a timely and challenging issue: 95 percent; of the pharmacological drugs cannot be delivered to the brain. This is mainly due to the blood-brain barrier (BBB), a highly selective boundary that hampers the passage of most compounds into the CNS. To overcome this prob…
The $R$BaCo${}_{4}$O${}_{7}$ (R $=$ Ca, Y, Tb, Ho, Tm, Yb, Lu) compounds provide a novel topology for studying the competition between triangular geometry and magnetic order. Here, we report the structural and magnetic behavior of the Lu member of this series via neutron and synchrotron x-ray diffraction, magnetizatio…
We calculate the x-ray absorption spectra (XAS) for $1s$-${\ensuremath{\pi}}^{*}$ and $1s$-${\ensuremath{\sigma}}^{*}$ transitions in single layer graphene using the dipole approximation and we compare with experimental results. It is found that the in-plane and out-of-plane orientations of the dipole vectors, which c…
The effect of the image force on the Peierls stress (τ p ) of a screw dislocation below a free surface is studied via a self-consistent semidiscrete variational Peierls–Nabarro model. The consequence of reduction in elastic energy and increase in stacking fault energy by the presence of the free surface is found to ad…
Recently, ZnO nanostructures have received much attention due to their promising characteristics for electronic, optical, and photonic devices. Generally, ZnO exhibits semiconducting properties with a wide band gap of 3.3 eV at room temperature and a strong binding energy of 60 meV, which is much larger than that of g…
Ion-partitioning between aqueous solutions and growing crystals is controlled by both the equilibrium thermodynamics of the solid solution-aqueous solution system and departures from equilibrium. In this chapter the various factors which influence iondistribution coefficients are reviewed with specific emphasis on the…
A polymer-based magnetoelectric (ME) laminate was fabricated by sandwiching one layer of thickness-polarized, length-stretched polyvinylidene fluoride (PVDF) piezoelectric polymer between two layers of length-magnetized, epoxy-bonded Tb0.3Dy0.7Fe1.92 (Terfenol-D) pseudo-1–3 magnetostrictive particulate composite in th…
An efficient numerical self-consistent field theory (SCFT) algorithm is developed for polymer systems subject to nonperiodic boundary conditions. The method involves collocation with a Chebyshev polynomial basis in order to solve the modified diffusion equations of SCFT and relax the fields experienced by polymer segm…
Abstract Clear and uniform one-dimensional (1D) α-MnO2nanorods with diameters of 30–50 nm were prepared by hydrothermal treatment of homogeneous solution of hydratedMnSO4andKMnO4with a littleH2O2. Upon control of hydrothermal conditions (reaction temperature and duration time), an excellent crystalline phase ofMnO2was…
Bacillus megaterium SW1-2 producing polyhydroxalkanoate (PHA), previously isolated from activated sewage sludge was selected for the study of PHB biopolymer production. Preliminary experiment showed that the strain capable of producing 36% cell dry weight (CDW) of the polymer during growth on basal E2 medium supplemen…
This chapter will be split into five parts. We will first discuss the goals of in situ experimentation. Then, specific parts will be devoted to in situ mechanical tests, experiments
A bolaamphiphile (5,5-B2NBr8) bearing a functional bipyridine moiety as the mesogenic core is reported for the first time. 5,5-B2NBr8 was found to self-assemble into uniform fibrous structure in aqueous solution, when the concentration was higher than cmc. Analogues of 5,5-B2NBr8 with structural differences in chain l…
Experiments were carried out to study the kinetics of crystal growth and the sweating process in two kinds of melt crystallization modes: static melt crystallization (SMC) and falling-film melt crystallization (FFMC). The system utilized in this paper was hyperpure phosphoric acid with water and trace amounts of metal…
The long-range non-additive three-body dispersion interaction coefficients Z(111), Z(112), Z(113), and Z(122) are computed for many atomic combinations using standard expressions. The atoms considered include hydrogen, the rare gases, the alkali atoms (up to Rb), and the alkaline-earth atoms (up to Sr). The term Z(111…
Metal oxide surfaces have been thought to be fairly rigid. On the example of rutile TiO2(011) we show that this is not necessarily the case. This surface restructures by interacting with molecules. The synergic effect of adsorbates causes a strictly directional reorganization of the substrate, which results in one-dim…
β-Cyclodextrin inhibits calcium carbonate crystallization and also reduces the degree of scaling on stainless steel surfaces. The rate of crystallization is not affected. The size of the calcium carbonate crystals is reduced by the cyclodextrin. Under the conditions used, the cyclodextrin was effective at concentratio…
Graphite was dispersed in immiscible polyvinylidene fluoride/maleated polypropylene (PVDF/PPgMA) blends to improve electrical and thermal conductive properties by building a double‐percolation structure. The morphology of PVDF/PPgMA blends was first investigated for several compositions by selective solvent extraction…