Materials Literature
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We investigate the nonlinear evolution of the Bales-Zangwill instability, responsible for the meandering of atomic steps on a growing vicinal surface. We develop an asymptotic method to derive, in the continuous limit, an evolution equation for the two-dimensional step flow. The dynamics of the crystal surface is grea…
Fundamental theories governing the number of fiber intersections in random nonwoven fiber webs were developed based on the planar geometry of fiber midpoints distributed in a two-dimensional Poisson field. First, the statistical expectation and variance for the number of fiber intersections in unit web area were obtai…
Amplification of metal-complexed polymerized diaminobenzidine by two light-insensitive physical developers was systematically examined in a dot blot model system following either polymerizing diaminobenzidine in the presence of transition metal salts or applying the metal salts post-diaminobenzidine polymerization. Th…
This paper presents our detailedly theoretical analyses on omnidirectional constant transmission and negative Brewster angle at planar interfaces associated with a uniaxial medium. The amplitude reflection and transmission coefficients at planar interfaces associated with uniaxial media are derived by examining the bo…
Phonons in K 0.5 Na 0.5 NbO 3 (KNN-50) ceramics were investigated from 10 to 900 K by means of Raman, infrared and THz spectroscopy. A first-order phase transition was detected from cubic to tetragonal phases at about 710 K, when the first component of the polarization appears. Transition from the tetragonal to the or…
An analysis of certain types of multiplicative congruential generators--otherwise known for their application to the sequential generation of pseudo-random numbers--reveals their relation to the coordinate description of lattice points in two-dimensional primitive sublattices. Taking the index of the lattice-sublattic…
Abstract A film of carboxymethyl‐β‐cyclodextrin‐intercalated Zn–Al layered double hydroxide (CMCD–LDH) was investigated for selective adsorption of the nucleosides adenosine (A) and guanosine (G). The effects of pH value and adsorption time on the adsorption behavior were studied. The CMCD–LDH film shows a higher sele…
Abstract We report that nano‐emulsions can be creatively used as a morphology selective synthesis method to prepare not only nano‐grains but also nano‐fibers with high selectivity. Synthesis of the two different morphological materials was demonstrated using polyaniline synthesis as a model case. Polyaniline nano‐grai…
The secondary structures of protected (neutral) and deprotected (charged) second generation dendronized polymethylmethacrylates carrying chiral 4-aminoproline-based dendrons were investigated using atomistic molecular dynamics simulations. Trajectories involving a total of approximately 280 ns on molecular systems con…
Bi 0.9 La 0.1 Fe 1 − x Mn x O 3 ceramics with compositions x = 0. 0.1. 0.2, 0.3, 0.4 and 0.5 were prepared by solid state reaction. Ceramics with lower Mn content (x < 0.4) tend to a single phase composition even after calcination at 650°C for 2 hours. Unlikle the porous Bi 0.9 La 0.1 FeO 3 ceramic sample, homogeneous…
In 2-ethoxybenzamide, C(9)H(11)NO(2), the amide substituents are linked into centrosymmetric head-to-head hydrogen-bonded dimers. Additional hydrogen bonds between adjacent dimers give rise to ribbon-like packing motifs, which extend along the c axis and possess a third dimension caused by twisting of the 2-ethoxyphen…
Two-photon fluorescence microscopy and confocal reflectance microscopy were compared to detect intracellular gold nanorods in rat basophilic leukaemia cells. The two-photon photoluminescence images of gold nanorods were acquired by an 800 nm fs laser with the power of milliwatts. The advantages of the obtained two-pho…
The brown alga Laminaria japonica is frequently consumed in Korea, Japan and China, and has been used for more than a thousand years as a drug in traditional Chinese medicine. In this study, we isolated a novel glycoprotein from L. japonica that stimulates the growth of the IEC-6 normal murine intestinal epithelial ce…
Solid solutions of (1-x)BiFeO 3 –xBaTiO 3 (0 ≤ x ≤ 0.30) were prepared by a two-step solid state reaction procedure. After pre-sintering and sintering at 800°C/1h and slow cooling, pure single phase compositions were obtained for all the analyzed mixtures in the limit of XRD accuracy, including for x = 0. A gradual at…
Abstract The elastic and elasto‐optical properties of Rb 1– x (NH 4 ) x H 2 AsO 4 mixed crystals were studied by Brillouin spectroscopy at room temperature. The measurements were made on single crystals obtained from the aqueous solution by slow evaporation. The behaviour of bulk phonons propagating in investigated cr…
Extremely thin monolayer titania nanosheets on silicon substrate appear as dark islands in scanning electron microscopy (SEM) images. To explain the origin of this dark contrast, we compared images with reference titania thin films, which show bright contrast. Carbon deposition only 1 nm thick reversed the contrast of…
Ceramic solid solutions Bi 4 (V 1−x Zr x ) 2 O 11−z (I), (Bi 1−y La y ) 4 V 2 O 11−z (II) and (Bi 1−y La y ) 4 (V 0.96 Zr 0.05 ) 2 O 11−z (III) with x < 0.30, y < 0.20, were prepared by the solid state reaction method and were investigated by means of various experimental techniques. The low temperature ferroelectric…
The structure of metal nanoparticles embedded inside dielectric nanowires/nanotubes, namely nanopeapods, has been of increasing interest due to their unusual photoresponse and optical adsorption properties. This paper presents a type of new inorganic nanopeapod: faceted Au nanoparticles inside MgO nanowires. The Au se…
Abstract Natural rubber (NR)/Acrylonitrile butadiene rubber (NBR) blend membranes, prepared by using dicumyl peroxide as the crosslinking agent, were tested for their vapor permeation characteristics. The permeation studies were conducted using three chlorinated hydrocarbons, viz. dichloro methane, chloroform, and car…
We report the first attachment of polymers with pendant vinyl groups to hydrogen-terminated silicon(111) (Si(111)-H); 1,2-polybutadiene (M(w) = 3200-3500 g/mol) was attached to Si(111)-H under mild conditions at room temperature with visible light. We also report the partial functionalization, in solution, of 1,2-poly…