Materials Literature
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A combination of piezoresponse force microscopy and x-ray diffraction sin2Ψ stress measurement have been used to investigate domain evolutions in (111)-oriented Pb(Zr0.55Ti0.45)O3 (PZT) and (115)-oriented SrBi2Ta2O9 (SBT) thin films with the repeated switching cycles (fatigue process). In the PZT film, it has been fou…
Two isomers of [Ni( α - rac -L)](ClO 4 ) 2 and [Ni( β ‘- rac -L)](ClO 4 ) 2 were prepared, and their configurations and reaction properties were investigated (L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane). Reactions of [Ni( α - rac -L)](ClO 4 ) 2 isomer with HBDC -, BDC 2-, and pyca - ligands give s…
A structural study of the thermal evolution of Ni(0.69)Cr(0.31)(OH)(2)(CO(3))(0.155) x nH(2)O into NiO and tetragonal NiCr(2)O(4) is reported. The characteristic structural parameters of the two coexisting crystalline phases, as well as their relative abundance, were determined by Rietveld refinement of powder x-ray d…
This paper describes a simple strategy for the formation of photoaligned and micropatterned discotic liquid crystal (DLC) film on the surface of photoirradiated azobenzene-containing polymer thin film. The key material for the surface-mediated photoalignment of the DLCs was poly[4-(4-cyanophenylazo)phenyl methacrylate…
The influence of a vertical magnetic field and of surface tension on the stability of thermogravitational convection in an infinite layer subject to a horizontal temperature gradient is investigated through a linear stability analysis. Magnetic field is found to strongly stabilize the flow, as well as surface tension…
We have studied the charge disproportionation phenomenon in CaFeO3 using the local-spin density approximation with the on-site Coulomb interaction parameter U and exchange parameter J. The calculation reveals that the total number of the 3d electrons is about 5.1 for both Fe(1)(Fe5+) and Fe(2)(Fe3+) atoms, and that th…
In the present paper the possible DNA damaging effects of ultrasound in occupationally exposed medical personnel were investigated using the alkaline comet assay. The extent of DNA migration in peripheral blood leucocytes was measured. Parameters of the comet assay were studied in 30 medical workers occupationally exp…
Abstract This article investigates the effect of diol structure and acetoacetylation of the hydroxylated polyesters (HPs) on thermal stability and degradation profiles of HPs/hexamethoxymethylmelamine (HMMM) as well as HPs/diphenylmethane diisocyanate (MDI) high solids coatings (HSCs) by thermogravimetry. Thermal stab…
Abstract Investigated in the present study are the physical properties, morphology, and structure of PP/N6 alloy filaments (10, 20 wt % N6) made with or without PP‐ g ‐MAH as compatibilizer. The alloy filaments produced at the take‐up speeds of 300 and 800 m/min were drawn with draw ratio of 3.5 and 2, respectively. S…
The Pyrococcus horikoshii OT3 protein PH0500 is highly conserved within the Pyrococcus genus of hyperthermophilic archaea and shows low amino-acid sequence similarity with a family of PIN-domain proteins. The protein has been expressed, purified and crystallized in two crystal forms: PH0500-I and PH0500-II. The struct…
A theoretical analysis of dispersion for two branches of propagating collective excitations in molten NaCl and NaI is performed using an approach of generalized collective modes. Two molten salts with different mass ratios were studied in order to clarify reported ``fast sound'' in molten NaCl [F. Demmel, S. Hosokawa,…
A series of oligo(propylene glycol) dimethyl ethers has been investigated using dielectric spectroscopy in order to relate features of the glass transition dynamics to the number of monomer units N in the chain. The results show that (i) when scaled with the glass transition temperature, the beta relaxations systemati…
Field-cooled x-ray magnetic circular dichroism experiments at several temperatures at the MnK and NdL2,3 edges on nonstoichiometric NdMnO3.11 have been performed. Our results show that Nd and Mn net magnetizations are parallel along the whole range of temperatures, ruling out the competition between the Nd and Mn subl…
A combination of position-resolved synchrotron microbeam techniques was used to explore the distribution and role of trace transition metals in the jaws of Glycera dibranchiata. The mandibles of this marine sediment worm have recently been found to be reinforced by the copper-based biomineral atacamite [Cu 2 (OH) 3 Cl…
Abstract Polyethylene glycol (PEG) structures were deposited onto stainless steel (SS) surfaces by spin coating and argon radio frequency (RF)‐plasma mediated crosslinking. Electron spectroscopy for chemical analysis (ESCA) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR‐FTIR) indicated t…
We have measured 21 adsorption isotherms for argon on single-walled carbon nanotubes produced by laser ablation. We explored temperatures between 40 and 153 K to obtain the coverage dependence of the isosteric heat of adsorption for films in the first and second layers. Our data are compared to results obtained in com…
The electrochemical behavior of polyacrylonitrile-based activated carbon cloth combined with a stainless steel current collector was examined using ac impedance spectroscopy. H(2)SO(4), KOH, and KNO(3) were employed as the electrolytes. The data presented in the impedance complex plane exhibit a semicircle at high fre…
We have tested the validity of the Adam-Gibbs (AG) equation to glass-forming polymers by means of dynamics data from dielectric relaxation and thermodynamic data. The AG equation holds for polymers with simple monomeric chemical structure, whereas it seems to fails for more complex systems possessing secondary relaxat…
A non-PET and non-PCT fluoroionophore has been designed and synthesized based on the combination of a biaryl boron-dipyrromethene fluorophore with an oligoethyleneglycol bridge. A specific red-shift response of absorption for NaClO4 in acetonitrile was demonstrated based on conformational restriction triggered by cati…
Electronic structures of delafossite AgTO2 (T=Fe,Co,Ni) have been investigated by using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The T 2p XAS spectra of AgTO2 show that Fe and Co ions are in the trivalent states but that Ni ions are mainly in the divalent states, suggesting that the me…