Materials Literature
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Zinc-nickel alloys (γ-phase) with 8–15% nickel were electrochemically deposited onto stainless steel for increased corrosion protection. Alkaline deposition conditions were studied using ammonium hydroxide as the base source and a working pH range between 9.0–9.5. Sodium acetate was used as a complexing ligand and fou…
Abstract—Metamaterial absorbers can perfectly absorb an incident wave in a narrow frequency band. In this paper, metamaterial absorbers are used to construct a terahertz modulator. By controlling the carrier density in the n-doped semiconductor spacer between a patterned metallic superstructure and a metallic ground w…
High efficient loading and controlled release of low-molecular-weight drugs were achieved facilely by heat-shrinkage of polyelectrolyte multilayer capsules with a spontaneous deposition property. The capsules consisting of 5 bilayers of poly(diallyldimethylammonium chloride) and poly(styrene sulfonate) (PSS) were asse…
The interaction between implanted nitrogen atoms, adsorbed gold atoms, and oxygen vacancies at the anatase TiO(2)(101) surface is investigated by means of periodic density functional theory calculations. Substitutional and interstitial configurations for the N-doping have been considered, as well as several adsorption…
BACKGROUND: A promising approach to optimize the disposition of daunorubicin-loaded magnetic nanoparticles (DNR-MNPs) was developed to minimize serious side effects of systematic chemotherapy for cancer. METHODS: The physical properties of DNR-MNPs were investigated and their effect on leukemia cells in vitro was eval…
The ability of soft, coarse-grained models to describe the narrow interface of a nearly incompressible polymer melt in contact with a solid is explored by numerical self-consistent field calculations and Monte-Carlo simulations. We investigate the effect of the discreteness of the bead-spring architecture by quantitat…
Functionalizing nanoparticles with copolymer ligands is an attractive method to tailor the assembly of the nanoparticles. We use Monte Carlo simulation to demonstrate how the monomer sequence in the grafted copolymers is a tuning parameter to control assembly of nanoparticles, and the shapes, sizes and structures of t…
The electronic structure and transport properties of Ca5Al2Sb6 are investigated by using first-principles calculations and Boltzmann transport theory, respectively. The results show that the partially filled valence band induces a high carrier concentration of about n = 5 × 1019 cm−3. There is a combination of heavy a…
Banana fiber-reinforced low density polyethylene (LDPE) based unidirectional composites (40% fiber by weight) were manufactured by compression molding. Banana fibers were treated with 2-ethylhexyl acrylate (EHA) mixed with methanol (MeOH) under UV radiation. A series of solutions of different concentrations of EHA in…
Uniform hollow magnetic mesoporous silica spheres (HMMS), with Fe3O4 nanoparticles embedded in the mesoporous shell, were successfully prepared by using carboxylic polystyrene latex and Fe3O4 heteroaggregates as the hard template together with a coating of tetraethoxysilane (TEOS) and n-octadecyltrimethoxysilane (C18T…
Nonspherical poly(vinylidene fluoride)/polystyrene (PVDF/PS) composite latex particles were prepared via a facile emulsifier-free batch-seeded emulsion polymerization. It was found that the styrene (St)/PVDF feed ratio was a determining factor for the formation of well-defined Janus particles. Transmission electron mi…
A reproducible method for the successful silica coating of silver nanoparticles is reported. A selection of tri-functional reporter molecules were designed to allow controlled synthesis of silica shelled, dye coded, SERS active silver nanoparticles.
Magnetic colloidosomes were fabricated by directing self-assembly of magnetic-mesoporous hetero-nanorods at the interface of water-in-oil droplets. Emulsions stabilized by the adsorbed particles without any surfactant indicate that such rod-like nanoparticles have specific advantages in making stable and intact shells…
Abstract Five series of segmented polyurethanes with different hard segment content were prepared by the prepolymer mixing method. The nano‐morphology of the obtained polyurethanes and their microphase separation were investigated by infrared spectroscopy (FTIR), modulated differential scanning calorimetry (MDSC) and…
The applicability of the local hardness as defined by the derivative of the chemical potential with respect to the electron density is undermined by an essential ambiguity arising from this definition. Further, the local quantity defined in this way does not integrate to the (global) hardness-in contrast with the loca…
We demonstrate that by combining silver nanoparticles and structured gold SSV surfaces the SERS for those molecules that bridge the nanoparticle-cavity gap is preferentially enhanced using 4-mercaptoaniline and 4-mercaptobenzoic acid as examples.
Skin wound healing is an urgent problem in clinics and military activities. Although significant advances have been made in its treatment, there are several challenges associated with traditional methods, for example, limited donor skin tissue for transplantation and inflammation during long-term healing time. To addr…
In this paper, we report a simple and versatile surface coating method to functionalize poly(3-caprolactone) (PCL) films by molecular self-assembly of a hydrogelator.
Hexagonal wurtzite ZnS nanowires radially arrayed on cubic zinc-blende ZnS hollow spheres have been successfully achieved for the first time, and such novel heterogeneous ZnS hollow urchin-like hierarchical nanostructures show greatly enhanced photocatalytic properties due to their two-phase enhanced light-harvesting…
In this communication we describe the synthesis, characterization and evaluation of the bactericide activity of a superparamagnetic bimetallic Ag/Co polymeric nanocomposite material for the treatment of bacteria contaminated aqueous solutions.