Materials Literature
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Ethyl carbamylated polyrotaxane (ECPR) and propyl carbamylated polyrotaxane (PCPR) were prepared based on the reactions between ethyl/propyl isocyanate and polyrotaxane (PR) in anhydrous DMSO under an argon atmosphere. By changing the alkyl type and substitution ratio, the PR derivative with good water-solubility was…
The wettability of molten zinc-aluminum on a steel substrate is an important issue in the hot-dip galvanizing process for automotive applications. Especially, the effects of surface oxides have been current topics during recent years. However wetting behavior under the effects of oxide has not been well illustrated du…
Luminescent properties of codoped phosphor are investigated in this paper. We show that white light is generated when the (446 and ) blue bands of combine with the broad orange bands of via exciting by irradiation. White light with varied hue, color temperature, and color rendering index can be easily tailored through…
The preparation of highly ordered mesoporous zirconia is of special interest when targeting applications in catalysis. Nevertheless, most of the previously reported attempts led to materials with a low hydrothermal stability. Herein, we accordingly report about the benefit of using mesoporous silica as a host support…
Cupric oxide (CuO) nanowires were synthesized by thermal oxidation of resistively heated copper wires in ambient air conditions. Aspect ratios up to 1000 have been achieved with this easy growth method that requires only standard laboratory equipment. The as-synthesized nanowires were subsequently transferred to silic…
A welded joint formed between stainless steel and a copper-base alloy is a combination of materials with high corrosion resistance and high mechanical strength and materials with high thermal conductivity. Such a combination is suitable for applications in heat exchangers and piping design among others. Forming a weld…
The dynamic behavior of granular media subjected to projectile impact was numerically investigated using a discrete element method (DEM). Specifically, the effects of the impact angle on the dynamic phenomena of projectile and granular media were examined. In general, after impact, a projectile either penetrates, rebo…
Pulse electrodeposition of p-type CuO semiconductor films for the light absorption layer of photovoltaic cells was conducted. Shapes of the potential pulse affected the crystallinity of CuO films. X-ray diffraction (XRD) spectra of all the CuO films among this study showed (002) orientation through the heteroepitaxial…
We have developed a versatile method to fabricate gold particle-in-ring and magnetic particle-in-nanobowl plasmonic nano-structures, which are of great potential for the investigation of the surface enhanced Raman scattering spectroscopy and the magneto-optical effect, respectively.
The mechanical and thermal properties of chitosan/agar/poly vinyl alcohol (CS/AG/PVA) ternary blended films having various proportions considering chitosan as the main component were investigated. The various variables static water contact angle such as contact angle, drop base area, drop volume and drop height was al…
Selected procedures permitting to prepare homogeneous nanofibre structures of the desired morphology by employing a suitable combination of variables during the electrospinning process are presented. A comparison (at the same pressure drop) was made of filtration capabilities of planar polyurethane nanostructures form…
High-selectivity, uniform three-dimensional (3D) flower-like bismuth telluride (Bi(2)Te(3)) nanocrystals consisting of few-quintuple-layer nanoplatelets with a thickness down to 4.5 nm were synthesized for the first time by a facile, one-pot polyol method with acetic acid as the structure-director. Micrometre-sized 2D…
Pilot study of the influence of thermoplastic starch based polymer packaging material on the growth of diatom population in sea water environment Novel polymeric packaging materials susceptible to environmentally friendly decomposition appeared on the global market. The paper is devoted to an investigation of the impa…
Superhydrophobic surfaces have recently attracted a lot of attention due to their self-cleaning properties. The superhydrophobic surfaces used in our studies were prepared using a mixed inorganic-organic coating. In order to check how short chain surface active agents affect the surface energy of such surfaces, their…
A simultaneous SAXS (small-angle X-ray scattering) and WAXS (wide-angle X-ray scattering) measurement setup was installed at BL45XU in SPring-8. The system comprises of a short (specimen-to-sample distance about 50cm) vacuum path and a mosaic CCD detector. It covers a q-range of 0.02-2.5 nm−1. Using this setup, lipids…
Electrical and Optical Properties of Low Pressure Chemical Vapor Deposited Al-Doped ZnO Transparent Conductive Oxide for Thin Film Solar Cell, Kim, Doyoung, Kim, Hyungjun, Jang, Kyungsoo, Park, Seungman, Pillai, Krishnakumar, Yi, Junsin
Polyacrylonitrile (PAN)/Montmorillonite (MMT) clay nanocomposite was prepared in a microwave oven using a transition metal Co(III) complex taking ammonium persulfate (APS) as initiator with a motive of converting hydrophobic PAN into hydrophilic nanocomposite material via nanotechnology by the inclusion of MMT to the…
Existence of sub-thermal collective excitations in proteins is of great interest due to its possible close coupling with the onset of their biological functions. We use high-energy resolution inelastic X-ray scattering to directly measure phonon dispersion relations and their damping in two hydrated proteins, α-chymot…
Liquid-crystal (LC)-coated substrates with a planar LC alignment can be fabricated by UV irradiation during LC coating using a slit coater. The alignment transition from a planar alignment to a vertical alignment was caused by UV irradiation after LC coating when a certain UV-curable additive was doped with the nemati…
A novel solution deposition process has been developed to prepare thin crystalline ZrO2 layers on particle surfaces. The thickness and morphology of the ZrO2 layers can be controlled by using surfactants under different reaction conditions. A needle-shaped monoclinic ZrO2 array was formed by a multi-step deposition pr…