Materials Literature
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Valence-band structures of the polar ZnO surfaces, i.e., ZnO(0001)-Zn and $\text{ZnO}(000\overline{1})\text{-O}$, have been investigated by angle-resolved photoelectron spectroscopy utilizing synchrotron radiation. On the $(1\ifmmode\times\else\texttimes\fi{}1)$ O-terminated surface, surface-localized states forming d…
We report the structural and transport properties of the Bi-substituted Co2MnO4 multiferroic materials. Samples synthesized using the solid state reaction route with the composition BixCo2−xMnO4 (<0x<0.3) exhibit a single phase behavior with a cubic spinel structure (space group Fd3m). The lattice parame…
It is established that heat can enhance the effect of radiation cancer treatment. Due to the ability to localize thermal energy using nanoparticle hyperthermia, as opposed to other, less targeted, hyperthermia modalities, it appears such enhancement could be accomplished without complications normally associated with…
Despite its appeal, real and simulated glass forming systems do not undergo an ergodic-nonergodic (ENE) transition. We reconsider whether the fluctuating nonlinear hydrodynamics (FNH) model for this system, introduced by us in 1986, supports an ENE transition. Using nonperturbative arguments, with no reference to the…
Crystallization of hard spheres interacting with a square well potential was investigated by numerical simulations using so-called Brownian cluster dynamics. The phase diagram was determined over a broad range of volume fractions. The crystallization rate was studied as a function of the interaction strength expressed…
Fourier transform ion cyclotron resonance mass spectrometry has been employed to study the reactions of gas-phase cationic cobalt clusters, Co(n) (+) (n=4-30), with nitric oxide, NO, and nitrous oxide, N(2)O, under single collision conditions. Isolation of the initial cluster permits detailed investigation of fragment…
Abstract In this paper we consider magnetic properties of single‐molecule magnets (SMMs). The main focus, however, is on possible mechanisms of magnetic switching of SMMs. One mechanism considered is the phenomenon of macroscopic quantum tunneling of magnetization (QTM) in an external time‐dependent magnetic field. Wh…
CuO−CeO 2 −MnO x /γ-Al 2 O 3 granular catalysts were synthesized by the sol−gel method. Performance of the CuO−CeO 2 −MnO x /γ-Al 2 O 3 catalyst was explored in a fixed bed adsorption system. The optimum temperature range for NO reduction over the CuO−CeO 2 −MnO x /γ-Al 2 O 3 catalyst was 200−450 °C. The catalysts mai…
Near-monodisperse, sterically stabilized cationic polystyrene latexes of either 122 or 310 nm diameter were prepared by aqueous emulsion polymerization using cheap, readily available reagents. At low pH, these latexes stabilized foams prepared by either hand-shaking or by using a foam column. SEM studies confirmed tha…
Abstract A series of sol‐gel derived organic–inorganic hybrid coatings consisting of organic epoxy resin and inorganic silica were successfully synthesized through sol‐gel approach by using 3‐glycidoxypropyl‐trimethoxysilane as coupling agent. Transparent organic–inorganic hybrid sol‐gel coatings with different conten…
Abstract The tensile and flexural properties of new thermosetting composites made by the free radical polymerization of a conjugated soybean oil (CSO)‐based resin reinforced with soy hulls have been determined for various resin compositions. The effects of reinforcement particle size and filler/resin ratio have been a…
The short-range order of individual fractal-like amorphous carbon nanotips was investigated by means of energy-filtered electron diffraction in a transmission electron microscope (TEM). The nanostructures were grown in porous silicon substrates in situ within the TEM by the electron beam-induced deposition method. The…
In this work we present a metal wire grid polarizer for the UV spectral region. The period of the aluminum grating is 100 nm. The grating was fabricated using a spatial frequency doubling technique. The process consist of electron-beamlithography, sputter coating and various ion-beam- and ICP etching steps. The featur…
Cerium-doped manganite thin films were grown epitaxially by pulsed laser deposition at $720\text{ }\ifmmode^\circ\else\textdegree\fi{}\text{C}$ and oxygen pressure ${p}_{{\text{O}}_{2}}=1--25\text{ }\text{Pa}$ and were subjected to different annealing steps. According to x-ray diffraction (XRD) data, the formation of…
Abstract Corona discharge has been widely applied to modify the surfaces of polymers. In this study, corona discharge was combined with a hydrogen peroxide treatment to improve the hydrophilic properties of wool fabric. Scanning electron microscopy photographs showed that the tip of wool scales was etched after corona…
The biophysical interactions between cells and type I collagen are controlled by the level of cell adhesion, which is dictated primarily by the density of ligands on collagen and the density of integrin receptors on cells. The native adhesivity of collagen was modulated by covalently grafting glycine-arginine-glycine-…
We show the designs of bulk one- and two-dimensionally isotropic photonic negative index metamaterials working around telecom wavelengths. The designed structures are inherently connected, which makes fabrication by direct laser writing and chemical vapor deposition or other techniques possible.
Solvent-induced performance deterioration in corona charged polypropylene electret filter media was studied. Electret media, exposed to isopropanol (IPA) in the liquid phase, exhibited reduced filtration efficiency with negligible changes in the pressure drop across the media. Scanning electron microscopy imaging indi…
In this paper, we investigate the design of antifouling surfaces by the deposition of polyelectrolytes modified by grafting of antifouling groups onto a (PSS/PAH)n precursor multilayer film [PSS, poly(styrenesulfonate); PAH, poly(allylamine)]. Different polyelectrolytes and different antifouling moieties are investiga…
In marine environments and water systems, it is easy for many structures to form biofilms on their surfaces and to be deteriorated due to the corrosion caused by biofilm formation by bacteria. The authors have investigated the antibacterial effects of metallic elements in practical steels so far to solve food-related…