Materials Literature
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In this study, we fabricated the multi-colored films of lyotropic cholesteric liquid crystals (CLCs) prepared from a hydroxypropyl cellulose (HPC) derivative by photopolymerization of a diacrylate liquid monomer for color image applications. When a hydroxypropyl cellulose derivative tethering propionyl side chains (HP…
The effect of hydrophobic monolayer sintered-particle wick on the growth and departure of droplets in dropwise condensation over a vertical surface is analyzed numerically using the minimum meniscus surface energy principle and the direct simulation of the meniscus and heat transfer through the partially liquid-filled…
ABSTRACT Metal catalyst contamination is a major concern in the preparation of polymeric materials. For conjugate polymers, trace amount of metal catalyst is detrimental to the optoelectronic properties. In this work, a method for synthesizing highly pure fluorescent polymers, poly(aryleneethynylene)s (PAEs), was deve…
Abstract The ability to incorporate high content of interstitial oxygen ions (O i ) in La 1+ x Sr 1‐ x Ga 3 O 7+0.5 x melilite owing to the good size match between La 3+ and Sr 2+ ions is well documented. Here, the complete substitution of Sr 2+ by Pb 2+ lone‐pair cations results in a significant loss of this ability,…
In this paper, trajectory control of arbitrary shape mandrel in three-dimensional circular braiding is studied. To obtain accurate trajectory, offset of mandrel is predicted and compensated for trajectory of mandrel. Firstly, the equation of the force of all yarns on three-dimensional mandrel is given. Then offset of…
ABSTRACT N ‐substituted maleimides polymerize in the presence of a radical initiator to give polymers with excellent thermal stabilities and transparency. In this study, we synthesized various maleimide copolymers with styrenes and acrylic monomers to control their thermal and mechanical properties by the introduction…
The synthesis of microribbons based on the assembly of porous silicon nanoparticles (pSiNPs) in a silica matrix is reported. The formation of these structures is driven by dissolution and reprecipitation of silica derived from the NPs upon drying of an aqueous colloidal dispersion. The process generates composite film…
Abstract Surface‐enhanced Raman spectroscopy (SERS) signals in liquid state are significantly enhanced by utilizing cooperative interaction between metal surface plasmon and dielectric resonance. Raman signals from the diluted solutions are very weak even if they are amplified by SERS using Au nanorods. When SiO 2 nan…
A graphene-based composite with high electrochemical performance for supercapacitor applications is fabricated by introducing nanoscale carbide-derived carbon (NCDC) into the fluorine-doped graphene (FG). The incorporation of fluorine can increase the specific capacitance of graphene by providing more pseudocapacitanc…
We report that results of investigation of the ZnS nanoparticles were synthesized by solid state reaction method at different annealing temperature (350 °C, 400 °C and 450 °C). The structural, functional, morphological and optical properties were characterized by using X-ray diffraction (XRD) analysis, Fourier transfo…
The number (AN), energy (AE) and dose (AD) albedos were measured at the scattering angle of 168° for 59.54 keV gamma-rays emitted from a radioactive source of Am-241. The experiments were carried out by using an HPGe detector with a resolution of 182 eV at 5.9 keV. Albedo parameters (AN,AE and AD) were investigated fo…
High Resolution Image Download MS PowerPoint Slide Noble metals with strong plasmons have been widely used as enhancement substrates for molecule identification. However, cyanide, a toxic and important signaling molecule with a corrosive nature to noble metals, makes direct recognition challenging. Herein a novel supe…
Toward imitating the natural smartness and responsivity of biological systems, surface interfacial properties are considered to be responsive and tunable if they show a reactive behavior to an environmental stimulus. This is still quite different from many contemporary biomaterials that lack responsiveness to interact…
Titanium modified FeMgOx catalysts with different precursors were prepared by coprecipitation method with microwave thermal treatment. The iron precursor is a key factor affecting the surface active component. The catalyst using FeSO4 and Mg(NO3)2 as precursors exhibited enhanced catalytic activity from 225 to 400 °C,…
In addition to electric fields and currents, light can also provide an approach to modulate the ferromagnetism with low energy consumption. BiFeO3, with features of relatively small bandgap and large polarization, provides an opportunity for investigating the optical modulation of magnetism. In this work, pure-phase B…
We investigated molecular absorption in the proximity of metal surfaces. Previously observed modifications in the spectra were found to be specific to treated silver nanoparticles. Moreover, we show that the most dominant new peaks in the absorption spectrum arise from modified plasmonic features of nanoparticles as a…
to design plasmonic platforms for nanophotonics applications.
Motivated by suggestions that hybrid nanomaterials from nanoporous metal and aqueous electrolyte can be used as actuators, we study the impact of an external load on the actuation behavior of nanoporous gold impregnated with aqueous electrolyte. At no load, we observe the well-documented trend for a more positive elec…
Abstract The main objective of this experimental study is to determine the effect of low temperatures on the mechanical behaviour of Strenx 960 Plus high-strength structural steel at different strain rates and stress triaxialities. For this purpose, a comprehensive experimental campaign was designed to characterise th…
An electrospinning process was optimized to produce fibers of micrometric size with different combinations of polymeric and surfactant materials to promote the dissolution rate of an insoluble drug: firocoxib. Scanning Electron Microscopy (SEM) showed that only some combinations of the proposed carrier systems allowed…