Materials Literature
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Nonlinear time evolution of phase-separating structures in the two-step phase separation process was investigated for a deuterated polybutadiene–polyisoprene mixture by using a time-resolved light scattering technique. The mixture studied has a lower critical solution temperature type phase diagram with a spinodal tem…
ε-Caprolactone (ε-CL) has been mixed with ZnCl2 at different mol ratios. The resulting complex was characterized through 1H and 13C NMR spectroscopy in bulk and in solutions, differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), and optical microscopy. Ring-opening polymerization of ε-caprolact…
A poly(isoprene-b-ethyleneoxide) diblock undergoes multiple ordered state transitions: from a crystalline lamellar (L c ), to a hexagonal (Hex) mesophase, to a bicontinuous cubic phase (Gyroid) before disordering (Dis). We have studied the kinetics of the Hex-to-Gyroid, Hex-to-L c and L c -to-Gyroid transitions using…
The growth of narrow single-wall carbon nanotubes through adduction of small carbon clusters is studied using a molecular-dynamics simulation method. Statistical behavior of the growth and defect formation process is analyzed. For ${C}_{2}$ dimer colliding onto the side-wall of narrow single-wall nanotubes, it is very…
Boron carbonitride (BCN) films with various compositions have been prepared by bias-assisted hot filament chemical vapor deposition. The three elements of B, C, and N are chemically bonded with each other and an atomic-level BCN hybrid has been formed in the films. The deposited films are composed of turbostratic stru…
Collagen VI: a beaded filament forming collagen Collagen VII and the formation of anchoring fibrils Collagen VIII Collagen X Collagen IX Collagen XII Collagen XIV Collagen XVI Collagen XIX Bibliography Sequence Alignments
Impulsive stimulated thermal scattering (ISTS) studies are conducted on glycerol in the supercooled liquid range. ISTS is used to measure the Debye–Waller factor, and to characterize the structural relaxation dynamics in the range from a few nanoseconds to hundreds of microseconds. The results are compared to predicti…
Direct pattern transfer onto poly(vinylidene fluoride) was achieved by using x-ray photons from a synchrotron radiation source. Quadrupole mass spectrometry and ultraviolet photoemission spectroscopy, combined with ab initio molecular orbital calculations, were employed to investigate the mechanism of direct photomicr…
The stability of ternary blends of two immiscible homopolymers and a block copolymer compatiblizer depends crucially on the effective interaction between the copolymer monolayers that form between the unlike homopolymer domains. Here, the interaction is calculated for blends involving A and B homopolymers of equal siz…
Pb[Yb 1/2 Nb 1/2 ]O 3 – PbTiO 3 (PYbN-PT)/SrRuO3 (SRO) capacitors with Pt top electrodes were grown by pulsed laser deposition onto (100)pc LaAlO3 (LAO) and (111)c SrTiO3 (STO) substrates (the subscripts pc and c refer here to the pseudocubic and cubic perovskite cells, respectively). Suitable changes in both the subs…
We have systematically studied superconducting instabilities in the repulsive Hubbard model for d-wave and p-wave pairing in various 2D and 3D lattices. Using fluctuation exchange approximation, we consider 3D face centered cubic lattice, 3D body centered cubic lattice, 3D simple cubic lattice, 2D square lattice and 2…
Previous results for surface linear optical response in centrosymmetric para-nitroaniline crystals are combined with literature values for the molecular first hyperpolarizability to calculate the surface-induced quadratic response. The average surface quadratic susceptibilities for incident light at a wavelength of 80…
Monolayer oscillations and interference oscillations were observed during the interrupted heteroepitaxy of Nb-doped strontium titanate on ${\mathrm{SrTiO}}_{3}$ by an oblique-incidence reflectance difference (OIRD) technique. The optical monolayer oscillations were verified by simultaneously monitored reflection high-…
The title compound, aquatris(nitrato)[2,4,6-tris(2-pyridyl)-1,3,5-triazine]samarium dihydrate, [Sm(NO3)3(C18H12N6)(H2O)]·2H2O, was prepared from Sm(NO3)3·6H2O and 2,4,6-tris(2-pyridyl)-1,3,5-triazine. The metal atom is ten-coordinate being bonded to the terdentate TPTZ ligand, three bidentate nitrates and a water…
Chiral-nematic liquid-crystal layers which have a short pitch, homeotropic boundary conditions, and bistable properties are investigated with respect to the temperature dependence of their field-induced cholesteric-nematic phase transition. Hereto the threshold field needed for the transition is studied as a function…
The low-temperature crystal structure of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF), C10H8S8, is similar to its high-temperature structure. The room-temperature central bond lengths of this molecule are often used as reference in empirical methods to estimate the charge carried by the (BEDT-TTF)xn+ cation…
An obligatory step in cellulose degradation by anaerobic bacteria is the adhesion of rile bacterium to the polysaccharide. In many anaerobic bacteria the adhesion protein, and the enzymes required for extensive polysaccharide hydrolysis, are organized into a complex and interesting structure called the cellulosome. Th…
Employing photoelectron emission microscopy (PEEM) as the spatially resolving technique, pattern formation during the catalytic reduction of NO with CO has been investigated on a microstructured Pt(100)/Ti/TiO2 surface in the 10−6 and 10−5 mbar range. The microstructured surface—initially created by a lithographic tec…
Recently, we used discrete off-lattice versions of the 3D Edwards model in conjunction with Monte Carlo simulations to study polymer brushes and diblock copolymer melts. Here we show by numerical simulation that the discrete Edwards model gives the scaling and corrections-to-scaling properties appropriate for a single…
Various copolyesteramides were prepared by melt compounding at 220 °C involving reaction of poly(styrene-co-maleic anhydride), SMA, with 6, 17, and 28 wt % maleic anhydride content, and 1-dodecanol, C12OH, in the presence of 2-undecyl-1,3-oxazoline, C11OXA. Copolymer architectures were examined by means of 1H NMR, FTI…