Materials Literature
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Gaseous hydrogen is a convenient medium to store and transport energy. As existing petroleum-based platforms are electrified, such as with the growth of fuel cell systems, hydrogen is becoming an attractive fuel which must be distributed, stored and dispensed. Hydrogen is used extensively in refining of petroleum prod…
Woven air filters made of polypropylene were examined for bacterial survival. The test strains belonged to gram-positive and gram-negative bacteria. An antimicrobial agent, silver nitrate (AgNO3), was added to the filtering material after the production cycle and tested for its ability to prevent microorganisms from f…
Core cross-linked star polymers possessing responsiveness to pH and temperature stimuli have been prepared, and we demonstrate how changes to pH and temperature can be used to trigger the release and uptake of a hydrophobic dye.
We explore the use of templated self-assembly to facilitate the formation of complex target structures made from patchy particles. First, we consider the templating of high-symmetry shell structures around a spherical core particle. We find that nucleation around the core particle can inhibit aggregate formation, a pr…
Two multi-nickel substituted arsenotungstate aggregates [enH2]2[Ni(H2O)4]2[Ni(en)2]2[Ni(en)]2{[(α-AsW6O26)Ni6(OH)2(H2O)3(en)(B-α-AsW9O34)]2[W4O16][Ni3(H2O)2(en)]2}·16H2O (1) and [Ni(H2O)(en)2]2[Ni(H2O)3(en)][Ni(H2O)(en)]{[(α-AsW6O26)Ni6(OH)2(en)2.5(B-α-AsW9O34)]2H4[W4O16][Ni4(H2O)2(en)2]2}·13H2O (2) (en = ethylenediam…
Herein we report a general strategy to synthesize highly uniform and monodisperse rare earth fluoride nanocrystals through a novel OA/ionic liquid two-phase system, while water-soluble hexagonal NaREF(4) nanocrystals are obtained by adding n-octanol.
Fabrication of graphene devices is often hindered by incompatibility between the silicon technology and the methods of graphene growth. Exfoliation from graphite yields excellent films but is good mainly for research. Graphene grown on metal has a technological potential but requires mechanical transfer. Growth by SiC…
Abstract Clay minerals have interlayer surfaces and edge surfaces, the former being the most important, especially in the case of swelling clays or smectites. Water is by far the most important adsorbed molecule in the interlayer space, where it interacts with the exchangeable cations and with the siloxane surface. Tr…
Deformation twinning is an important mechanism for metals with hexagonal close-packed (hcp) crystal structures such as titanium, magnesium, beryllium, and zirconium, as well as metals with other low-symmetry crystal structures. This article presents a multiscale constitutive model for the plastic deformation of hcp po…
Fabrication of a polymer/nanoparticle composite capsule with controllable nanoparticle properties remains a great challenge in material science. In this work, a three-component layer-by-layer (LbL) self-assembly process using a weak polyelectrolyte-nanoparticle blend and another weak polyelectrolyte was systematically…
This paper reports on the mutual wetting transitions between anisotropic and isotropic on directional structures fabricated by femtosecond (fs) laser. The directional structures are composed of flat Si triangular patterns and fs laser induced spikes. After chemical deposition of a layer of fluoroalkylsilane, the trian…
Our aim in this article is to study the asymptotic behavior, in terms of finite-dimensional attractors, of the Cahn-Hilliard-Oono equation. This equation differs from the usual Cahn-Hilliard equation by the presence of a term of the form <i>∊u</i>, <i>∊</i>>0, which takes into account long-ranged interacti…
The hydrodynamic interactions between colloidal particles in small ensembles are measured at varying distances from a no-slip surface over a range of inter-particle separations. The diffusion tensor for motion parallel to the wall of each ensemble is calculated by analyzing thousands of particle trajectories generated…
Urchin-like Ni-P microstructures with room-temperature magnetism have been successfully synthesized via a simple water-DMF solvothermal route. The as-obtained product exhibits good capacity to rapidly remove heavy-metal ions such as Cd(2+) and Pb(2+) ions from water and can be easily recycled owing to their magnetism.
A luminescent trinuclear Dy(III) complex, in which the three Dy(III) centers with different geometries take a nearly linear disposition, shows the slow magnetic relaxation processes of single ion origin.
The first 3d-4f clusters built using derivatised salicylaldoximes (R-saoH(2)) describe unusual hexagonal prisms. Replacement of the paramagnetic Gd(III) ions with diamagnetic Ln(III) ions allows for a more thorough understanding of the magnetic properties, whilst replacement with Tb(III) doubles U(eff).
A facile synthesis of monodispersed microparticles composed of superparamagnetic Fe(3)O(4) cores, SiO(2) shell, hierarchical γ-AlOOH periphery with Au nanoparticles is reported. These particles are found to be useful for protein immobilization and bear resemblance to daisy flowers, and are hereafter termed "nanoflower…
Some threshold energy is required for 4-aminobenzenethiol to occupy the gold surface sites capable of leading to the appearance of surface-enhanced Raman scattering peaks via a charge transfer resonance enhancement mechanism.
Water-soluble, highly stable fluorescent Ag nanoclusters have been synthesized using a novel core/shell solid polymer (PMMA/PMMA-PMAA) nanoparticles as a novel template. The photoluminescence, ultraviolet-visible absorption, X-ray photoelectron (XPS), laser desorption time of flight mass spectroscopies (LDI-ToF-MS) an…
Herein we present a simple and elegant method for the creation of solid-state conjugated polymer devices. Their electrochromic properties were fully explored in this study, but one could envision the extension of this method to displays, solar cells, OLEDs, transistors, or many other applications. We prepared conducti…