Materials Literature
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[Image: see text] We report on the low-pressure plasma immobilization, characterization and application of thin films of hyperbranched glycoacrylates, poly(3-O-acryloyl-alpha,beta-D-glucopyranoside) (AGlc), on PTFE-like fluorocarbon surfaces. This method is an efficient and versatile way to immobilize sugar-carrying b…
Abstract Summary: Novel hybrid polymer brushes with alternating dendritic wedge and linear chain as side chains were reported in this paper. Firstly, dendronized polymer initiators of generation one to three, G n MIBr ( n = 1, 2, 3), were synthesized through the alternating copolymerization of styryl dendrons and male…
Abstract Summary: Functionalized PP samples with different percentages of grafted IA, i.e., 0.7, 1 or 1.8 wt.‐%, with similar molecular weights were used as compatibilizers in PP/clay nanocomposites. PP nanocomposites containing 1 wt.‐% of organically modified clays, i.e., montmorillonite, natural hectorite and synthe…
Abstract Cotton fleece has become a popular fashion in recent years. However, most of the 100% cotton fleece fabric is not able to meet the federal flammability standard (‘ 16 CFR Part 1610: Standard for the Flammability of Clothing Textiles ’) without chemical treatment. In this research, we investigated the use of t…
Abstract The new compound (1,4‐dabH 2 )Ag 2 SnS 4 (1,4‐dab = 1,4‐diaminobutane) was prepared under solvothermal conditions and crystallizes in the tetragonal space group P4 2 /n with lattice parameters a = 14.7847(8) Å, c = 11.9087(6) Å, V = 2603.1(2) Å 3 , Z = 8. In the structure SnS 4 tetrahedra and AgS 3 triangles…
In diamond and zinc blende crystals, the competition between glide and shuffle-set slips has been intensively studied. In particular, the undissociated screw dislocation in Si seen at low temperature about five years ago was generally believed to be shuffle set. In this letter, the authors have performed tight-binding…
The authors demonstrate that by lowering deposition temperature of ZnMnO films (T<500°C) they can avoid Mn clustering and creation of inclusions of Mn oxides, which are frequently formed in ZnMnO layers grown by high temperature methods. Low temperature growth is achieved using atomic layer deposition and organ…
Abstract Raman spectra of starting (pristine) and functionalized multiwalled carbon nanotubes (MWNTs) were analyzed by principal component analysis (PCA) because the original Raman spectra showed very little differences between them. The nanotubes were functionalized with amines: dodecylamine (MWNT1), nonylamine (MWNT…
We have performed nuclear magnetic resonance (NMR) measurements on gallium confined in opal. In a cooling process, between 260 and $220\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, the NMR spectra of gallium in opal exhibit two separate peaks at $\ensuremath{\sim}122.579\phantom{\rule{0.2em}{0ex}}48$ (low frequency, LF) and…
Here the wetting of ionic and nonionic surfactant solutions on a superhydrophobic interface, obtained by using a mixed inorganic-organic coating providing a fractal-like structure, has been investigated to define the role of adsorption at these interfaces. The presence of the amphiphilic molecules is effective in lowe…
In this study, the authors demonstrate the ability to apply precise, conformal W coatings onto all surfaces of nanoporous carbon aerogels using atomic layer deposition (ALD). The resulting material has a filamentous structure in which the W completely encapsulates the carbon aerogel strands. The material mass increase…
Point contact Andreev reflection measurements of Co2Cr1−xFexAl Heusler alloys showed that the spin polarization P decreases with x from P=0.62 for x=0.0toP=0.54 for x=0.4 and then increases slightly to P=0.56 for x=1.0. The deviation in P of the samples with x=0.0 and 0.4 from the theoretical predictions (P>0.9…
This letter reports on the performance improvement of phase-change memory (PCM) cells by applying silicon-germanium (SiGe) alloys as resistive heating layers. The in situ doped polycrystalline Si0.75Ge0.25 films, lying under holes filled with a Ge2Sb2Te5 (GST) phase-change material in a pore-style configuration, promo…
Single crystals of TiO(2) rutile doped with Cr, Mn, Fe, Co, Ni, and Cu were grown with the flux method in a Na(2)B(4)O(7) melt. The samples, checked in their structural and phase homogeneity by x-ray diffraction and micro-Raman spectroscopy, were single-phase needle-shaped crystals several millimetres long. Paramagnet…
The effect of texture with (100) and (110) preferred orientations on dielectric properties of Ba0.6Sr0.4TiO3 (BST) thin films grown on SrO (9nm) and CeO2 (70nm) buffered Si substrates, respectively, was investigated. The coplanar waveguide (CPW) phase shifter using (100) oriented BST films on SrO buffered Si exhibited…
The magnetocaloric effect (MCE) in fine grained perovskite manganites of the type La(1-x)K(x)MnO(3) (0<x<0.15) prepared by a pyrophoric method has been investigated. Potassium addition in lanthanum manganite enhances the Curie temperature (T(C)) of the system from 260.4 K (x = 0.05) to 309.7 K (x = 0.15). A large magn…
ZnO homojunction light-emitting diode was grown on single-crystal GaAs (100) substrate by ultrasonic spray pyrolysis. This diode was comprised of N–In codoped p-type ZnO and unintentionally doped n-type ZnO film. Ohmic contact on n-type ZnO layer and GaAs substrate was formed by Zn∕Au and Au∕Ge∕Ni alloyed metal electr…
Abstract Summary: The thermal degradation and carbonization of poly(1,3‐cyclohexadiene) (PCHD) with a controlled polymer chain, and its soluble dehydrogenated derivatives are reported for the first time. For PCHD, thermogravimetric (TG) analysis revealed a three‐stage thermal degradation. PCHD was completely decompose…
Numerous theoretical and numerical works have been devoted to the study of the algebraic decrease at large times of the velocity autocorrelation function of particles in a fluid. The derivation of this behavior, the so-called long-time tail, generally based on linearized hydrodynamics, makes no reference to any specif…
Abstract Functional polyurethane surfactants (di‐block and tri‐block) were synthesized by addition polymerization of 2,4‐toluenediisocyanate with poly(propylene oxide) and monoallyl‐end‐capped poly(ethylene oxide). The chemical structure of the polyurethane surfactants was confirmed by Fourier transform infrared and 1…