Materials Literature
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We investigated the stability of ZnO nanowires in a metal-semiconductor-metal structure by applying a longitudinal electric field inside a scanning electron microscope equipped with manipulators. The electrical transport was well simulated by the thermionic-field-emission model and the failure of single crystalline Zn…
The interaction between monoclinic zirconia and H 2 is studied by means of periodic density functional theory calculations. The (1̅11) and (1̅01) surfaces are represented by slab models. Molecular hydrogen is found to adsorb weakly on the slabs with exothermic energies of −0.10 eV. Heterolytic dissociative adsorption…
In this study we used a novel fabrication process, involving a very large scale integration and isotropic oxygen plasma treatment to generate highly dense lines and well-defined patterns of polystyrene (PS) brushes on patterned Si(100) surfaces. We defined trench patterns having a duty ratio of 1:1 on the Si surface u…
A 20 min ball-milling treatment (ball to powders ratio equal to 1) was demonstrated to be a valuable method for mechanochemically activating Ta, B 4 C, Si, and graphite to prepare TaB 2 −SiC and TaB 2 −TaC−SiC ultrarefractory composites by self-propagating high-temperature synthesis (SHS). The resulting completely con…
With low modulus of elasticity, high strength, excellent ductility, excellent durability, and low price, polypropylene fiber is often used in cement-based materials to improve the toughness and anticracking performance of the matrix composite. The aim of this study was to investigate the flexural properties of cement-…
This paper reports a simple and novel process for preparing nano-granular Zn(x)Fe(3-x)O(4) ferrite films (0 </= x </= 0.99) on Ag-coated glass substrates in DMAB-Fe(NO(3))(3)-Zn(NO(3))(2) solutions. The deposition process may be applied in preparing other cations-doped spinel ferrite films. The Zn content x in the Zn(…
We review ferroelectric and related phenomena in biological materials. Also the results of the study of peptide nanotubes (PNT), which are formed by self-assembly of aromatic peptides building blocks, are presented. We describe a new preparation process for making highly ordered alignments of PNT by vapor deposition o…
A dramatic influence of bias field on pyroelectric response was revealed for ceramics of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 with x = 0.075, 0.33 and 0.98Pb(Fe1/2Nb1/2) O3–0.02PbTiO3. Temperature and bias field dependency of the dielectric permittivity and dynamic pyroelectric coefficient have been studied to establish poss…
Transition-metal-(Cr, Mn, and Ni)-doped zinc oxide (ZnO) with the concentration of 2.5% and pure ZnO nanocrystalline (nc) films have been fabricated on quartz substrates by the sol−gel method. The X-ray diffraction analysis shows that the films are polycrystalline with the wurtzite phase. The E 2 high phonon mode shif…
p-Cyanophenylalanine is an extremely useful fluorescence probe of protein structure that can be recombinantly and chemically incorporated into proteins. The probe has been used to study protein folding, protein-membrane interactions, protein-peptide interactions, and amyloid formation; however, the factors that contro…
We demonstrate some recent progress in understanding the anomalous behavior of liquid water, by combining information provided by recent experiments and simulations on water in bulk, nanoconfined, and biological environments. We interpret evidence from recent experiments designed to test the hypothesis that liquid wat…
Two copper-rich open-framework sulfides, K(4)Cu(8)Ge(3)S(12) (1) and Rb(4)Cu(8)Ge(3)S(12) (2), have been synthesized under solvothermal conditions. Compounds 1 and 2 are isostructural and contain icosahedral [Cu(8)S(12)](16-) clusters as basic building blocks. These clusters are primitive cubic packed and connect to o…
Photoselection of Ru(II)-polypyridyl sensitizers with polarized pulsed-light excitation, when anchored to TiO(2) nanocrystallites interconnected in a mesoporous thin film, results in an anisotropic distribution of excited sensitizers. Under conditions where excited-state sensitizers efficiently inject electrons into T…
Microlenses are widely studied in two main areas: fabrication and characterization. Nowadays, characterization draws more attention because it is difficult to apply test techniques to microlenses that are used for conventional optical systems. Especially, small microlenses on a substrate are difficult to characterize…
Electrochemical frequency modulation (EFM), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization have been used to investigate the inhibition effect of a new pyrimidine heterocyclic derivative, namely 2-mercapto-4-(p-methoxyphenyl)-6-oxo-1,6-dihydropyrimidine-5-carbonitrile (MPD) on copper cor…
We have investigated the interfacial termination layer dependence of the Schottky barrier height (SBH) for heterojunctions between polar ${\text{La}}_{0.6}{\text{Sr}}_{0.4}{\text{MnO}}_{3}$ (LSMO) and nonpolar Nb-doped ${\text{SrTiO}}_{3}$ (Nb:STO). The SBH for $\text{LSMO}/{\text{TiO}}_{2}\text{-Nb}:\text{STO}$ is hi…
Scanning tunneling microscopy and scanning tunneling spectroscopy combined with first-principles calculations have been applied to investigate the (111) surface of a naturally grown ${\text{Fe}}_{3}{\text{O}}_{4}$ single crystal. The commonly observed surface is determined as a layer of Fe cations at tetrahedral sites…
Light scattering phenomena in periodic systems have been investigated for decades in optics and photonics. Their classical description relies on Bragg scattering, which gives rise to constructive interference at specific wavelengths along well defined propagation directions, depending on illumination conditions, struc…
We have developed a straightforward synthetic route to prepare core-shell systems based on gold nanoparticles (NPs) surrounded with J-aggregates molecules. This synthesis allows the direct and efficient coating, at room temperature, of pretreated citrate-stabilized gold NPs with 5, 5′, 6, 6′-tetrachloro-1-1′-diethyl-3…
A complete understanding of charge redistribution (spontaneous movement of charge once the system has been placed on open-circuit) in porous materials is desirable because charge redistribution will affect the performance of devices incorporating porous electrodes. In this paper, a model pore based on the de Levie tra…