Materials Literature
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Abstract In this work, the encapsulation of magnetic nickel nanoparticles in polyacrylamide particles was performed via inverse miniemulsion polymerization. The dispersion of nickel nanoparticles was characterized in polar solvents including water, ethanol, and dimethyl sulfoxide using different stabilizers. The best…
Abstract Local thermal equilibrium (LTE) is a common assumption used in thermal modeling of solid oxide fuel cells (SOFCs). However, its validity has not been fully verified. To examine the validity of the LTE assumption, a thermal model has been developed to evaluate the local thermal non‐equilibrium effect of SOFC e…
Mesoporous silica containing isolated Ti with variable Si/Ti ratios was prepared by pyrolysis of a mixture of tetrakis(tris-tert-butoxysiloxy)titanium (TS4) and tetraethoxysilane (TEOS) through a hard template method. TEOS plays two roles as a silica source and solvent. TS4 works as a catalyst for the hydrolysis of TE…
Theoretical understanding of the surface modification of Cl-passivated silicon nanocrystals (Si NCs) is rather limited, in stark contrast to that for H-passivated Si NCs. We now investigate four surface-modification schemes (silanization, alkylation, alkoxylation and aminization) that have been experimentally adopted…
A viscoelastic interface model is proposed to study the effective mechanical responses of nanocomposites filled with carbon nanotubes. It is incorporated with the Mori–Tanaka method and the elastic-viscoelastic correspondence principle. The effective dynamic stiffness and damping of randomly oriented nanocomposites ar…
Dispersions of platelets in the nematic phase are submitted to large amplitude oscillatory shear flow and probed by high temporal resolution small angle x-ray scattering. The response displays rich dynamic and structural behavior. Under small amplitude deformations we observe an elastic response, while structurally sy…
NaY(MoO(4))(2) microcrystals with different morphologies including spherical, rhombic, sheet-like, and rectangular plate-like morphologies have been successfully synthesized via a simple hydrothermal method by varying the molar ratios of Y(NO(3))(3)/Na(2)MoO(4) and pH values of the resultant solutions. NaY(MoO(4))(2)…
Abstract Epoxy was sequestered within a poly(vinyl alcohol) ( PVA ) shell using a coaxial electrospinning process resulting in fibers suitable for use in self‐healing materials. Electrospinning equipment was designed and built including extensive development of the coaxial spinneret and optimization of the electrical…
Recent theoretical and experimental studies demonstrated that breaking of the sublattice symmetry in graphene produces an energy gap at the former Dirac point. We describe the synthesis of graphene sheets decorated with ultrathin, Si-rich two-dimensional (2D) islands (i.e., Gr:Si sheets), in which the electronic prope…
Compact oxide layers predominantly consisting of zinc oxide naturally grow on zinc upon exposure to a single seawater droplet. SEM and TEM reveal the existence of these oxides beneath the surface, close to the metal surface. EIS demonstrates that these oxides serve as an electrochemical barrier on zinc. The compact ox…
This paper reports a theoretical analysis of the electronic structure and magnetic properties of a tetranuclear Cu(II) complex, [Cu(4) (HL)(4)], which has a 4+2 cubane-like structure (H(3) L=N,N'-(2-hydroxypropane-1,3-diyl)bis(acetylacetoneimine)). These theoretical calculations indicate a quintet (S=2) ground state;…
The appropriate choice of chemical composition of a metallic precursor, which produces the basic structure units in the growth process of nanocrystals, is a high priority in the synthesis of metal-especially Au-nanoparticles. In the present work, Au seeds (prepared by the reduction of Au3+ solution with NaBH4 in the p…
The challenge for structural biology is to understand atomic-level macromolecular motions during enzymatic reaction. X-ray crystallography can reveal high resolution structures; however, one perceived limitation is that it reveals only static views. Here we use time-dependent soak-trigger-freeze X-ray crystallography,…
The economic development of any region, state or country, depends not only on its natural re‐ sources and productive activities, but also on the infrastructure that account for the exploita‐ tion, processing and marketing of goods. Irrigation systems, roads, bridges, airports, maritime, land and air transport, school…
Red ox power! DFT calculations have been used to analyze the adsorption energy of gold on high-valent doped CaO in terms of iono-covalent, redox, and Coulomb contributions (see picture). Surprisingly, the dominant energy contribution originates from redox processes between the dopant and the adsorbate Au, not from the…
We report the syntheses and characterizations, in the solid state and in solution, of three new cyclic polyoxothiomolybdates self-assembled around 2,5-dimethylterephthalate (DMT) and 2,5-bis(trifluoromethyl)terephthalate (DFMT) ligands, namely [Mo12DMT](2-), [Mo12DFMT](2-) and [Mo16DFMT](2-). A series of these two Mo1…
The synthesis and application of a dibenzyl-functionalized bispidine, in combination with 1-(3,5-bis(trifluoromethyl)phenyl)-3-cyclohexylthiourea (TU) co-catalyst, has been demonstrated to be an excellent catalyst for the controlled ring-opening polymerisation (ROP) of lactide and cyclic carbonate monomers. Notably, t…
Single-phase GIS-NaP1 zeolite particles were hydrothermally synthesized from inorganic precursor solutions. The as-synthesized GIS-NaP1 zeolite particles have spherical morphology similar to Myrica rubra fruit. These knobby surfaced GIS-NaP1 zeolite spheres of size 0.8 to 1.8 μm were composed of crystalline nanopartic…
Increasing the temperature variation rate is a useful method for enhancing the response of pyroelectric devices. A three-dimensional ZnO film was fabricated by the aerosol deposition (AD) rapid process using the shadow mask method, which induces lateral temperature gradients on the sidewalls of the responsive element,…
Lanthanide ions, Ln(III), are of interest in the treatment of bone density disorders because they are found to accumulate preferentially in bone (in vivo), have a stimulatory effect on bone formation, and exhibit an inhibitory effect on bone degradation (in vitro), altering the homeostasis of the bone cycle. In an eff…