Materials Literature
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Microfibrillated cellulose (MFC), TEMPO-pretreated MFC, and hybrid polymer/MFC mix were used for the production of layered films with interesting properties for application in food packaging. The series of samples were prepared from MFC (base layers) using a dispersion-casting method. The same procedure as well as a b…
No single material or materials system today is a clear choice for photoelectrochemical electrode applications. Generally, materials with narrow, well-aligned band gaps are unstable in solution and stable materials have band gaps that are too wide to efficiently absorb sunlight. Here, we demonstrate the narrowing of t…
A novel monomer, poly(ethylene glycol) monoacrylate aminopropyltriethoxysilane phenyl phosphate (SNP), containing phosphorus, nitrogen, and silicon was synthesized and then incorporated into a poly(methyl methacrylate) (PMMA) matrix through copolymerization and the sol–gel method to produce organic–inorganic hybrids.…
Self-assembly of an achiral [Cu(L)] complex produced a homochiral helical chain [Cu(L)](3)·2H(2)O (1) (L = 2-dimethylaminoethyl(oxamato)). Interestingly, complex 1 obtained in our laboratory exhibits only a left-handed helical chain without any chiral source. Single-crystal X-ray analysis revealed the absolute structu…
In the present investigation, a new optically active poly(amide–imide) (PAI) was synthesized from the polymerization reaction of N-trimellitylimido-L-isoleucine diacid with 4,4′-methylenebis(3-chloro-2,6-diethylaniline) using molten tetra-n-butylammonium bromide and triphenyl phosphite as a condensing agent and green…
Molecular dynamics simulations using quantum mechanics for the electronic system, i.e., within the Born-Oppenheimer or related Car-Parrinello approximation, became feasible and popular in recent years for very large systems. The most common setup for these simulations is the supercell method in conjunction with the Γ-…
The synthesis of new chiral monomer 4-(menthyloxyacetoxy- benzoyloxy)biphenyl-4′-(2-(undec-10-e noyloxy)ethoxy)benzoate (M L ), crosslinking agent 4-(undec-10-enoyloxy)biphenyl-4′-(2-(undec-10-enoyloxy)ethoxy)benzoate (C A ), and liquid crystal polymer networks (E 1 −E 5 ) containing menthyl group is presented. Their…
In this study, Y2O3:Eu nanocrystals (NCs) were prepared through the combustion, Pechini and hydrothermal methods followed by the heat treatment of samples at 873 K. The resultant NCs were investigated by X-ray diffractometery, scanning electron microscopy, transmission electron microscopy, selected area electron diffr…
We investigate the surface-directed phase separation of spin-coated polystyrene/poly(methyl methacrylate) (PS/PMMA) blends on prepatterned octadecyltrichlorosilane (OTS)-glass substrates under various experimental conditions. As a result of tandem processes of spinodal decomposition and selective wetting of polymer co…
The theoretically predicted optimum length/breadth/width ratio for maximizing shape biaxiality was investigated experimentally by the facile and successful synthesis of cross-shaped compound 3, which showed enantiomeric nematic phase behavior. This cross-like core structure could alternatively be viewed as two fused V…
Layer-by-layer (LbL) deposition of polyelectrolytes and proteins within the cylindrical nanopores of anodic aluminum oxide (AAO) membranes was studied by optical waveguide spectroscopy (OWS). AAO has aligned cylindrical, nonintersecting pores with a defined pore diameter d(0) and functions as a planar optical waveguid…
We consider a free energy, within the framework of the Onsager approximation, for a spatially and orientationally inhomogeneous distribution of hard rods confined on a spherical surface. These rods interact with each other though the excluded-volume interaction, forming a textured nematic structure on the spherical su…
A systematic technique has been developed to determine antiscaling efficiency and dissolution capacity for calcium carbonate in oilfield brines under various ultrasonic treating conditions. During the static experiments, effects of ultrasonic frequency, acoustic intensity, treating time, and water level on the antisca…
In this paper, we study the resonant responses of an impact oscillator with a one sided SMA motion constraint operating in the pseudoelastic regime. The effectiveness of the SMA restraint in suppressing nonlinear resonances of the impact oscillator is assessed by comparing the dynamic responses of the impact oscillato…
This paper describes specific and nondestructive detection of two isomers of diarylethene derivative, namely 1,2-bis(5′-ethoxy-2′-(2″-pyridyl)thiazolyl)perfluorocyclopentene (DE) by surface-enhanced Raman scattering (SERS). UV and visible light irradiations transform reversibly DE between open-form (OF) and closed-for…
ABSTRACT The present article establishes and validates a rheological model that can be used to characterize viscoelastic properties of food gels during compression under small and large deformations. Transient creep and standard compression tests were performed to characterize agar gels of different concentrations und…
Sustained electrochemical oscillations at p-type Si(100) in a dilute ammonium fluoride electrolyte are investigated by means of ellipsometric intensity and hydrogen measurements. Two main types of oscillations are identified, one with a low and one with a high current amplitude. It is demonstrated that the low-current…
The rapid growth of the magnetostriction coefficient of ferromagnetic Fe${}_{1\ensuremath{-}x}$Ga${}_{x}$ alloys that occurs at a composition range from $0<x<0.20$ has recently been associated with the formation of nanoscale tetragonal precipitates close to an order-disorder transition. The structurally anisotro…
The microstructural evolution throughout the first-order tetragonal-to-orthorhombic structural transition is analyzed by powder diffraction analysis for two different systems belonging to the class of compounds referred to as 1111 oxypnictides: (La${}_{1\ensuremath{-}y}$Y${}_{y}$)FeAsO and SmFeAs(O${}_{1\ensuremath{-}…
We report the preparation of bifunctional silver–iron oxide composite nanostructures (Ag@Fe 2 O 3 ) and demonstrate their magnetic separation with an analyte molecule from silver nanoparticles in a mixed solution. Magnetic and non‐magnetic plasmonic nanostructures and their separation are monitored by the surface‐enha…