Materials Literature
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Experiments performed on different powders of different size distributions tribocharged with stainless-steel (SS) beads showed the charge acquired by the powder could be correlated with the actual work function difference between the powder and SS. Ultraviolet and X-ray photoelectron spectroscopy were performed on var…
In situ FTIR spectroscopy coupled with mass spectrometry have been used to study the mechanism of nitrates formation and reduction over a common Pt-Rh/Ba/Al2O3 NOx storage catalyst. Our device consists of a transmission reactor cell (having a very small dead volume) dedicated to the evolution of surface species, and o…
Monodispersed silver nanoparticles (average diameter 4.4 ± 0.2 nm) were prepared via an amine adduct by the reaction of insoluble silver myristate with tertiary alkylamine.
A series of novel five-coordinate aluminium mono alkoxide complexes supported by R1,R2BPBA (bis-3-R1-5-R2-phenoxymethyl-bisamine) ligands were synthesized to probe the effect of electronic variation in the supporting ligand on the rate of ε-caprolactone polymerization. Substitution on the aromatic position para to the…
A supercapacitor/battery hybrid was fabricated using a mesoporous Ni / Ni ( OH ) 2 positive electrode and a mesoporous Pd negative electrode, both fabricated by electrodeposition of the metal within the hexagonal phase of a liquid crystalline template. Because we are predominantly interested in the performance of the…
PURPOSE: To develop a controlled-drug delivery system for the long-term inhibition of vascular endothelial growth factor (VEGF) and its mediated responses. METHODS: Poly(lactic-co-glycolic)acid (PLGA) microspheres containing anti-VEGF RNA aptamer (EYE001) formulations in the solid-state were developed by an oil-in-oil…
The particle size of mono-dispersed super-microporous silica spheres synthesized from tetramethoxysilane and n-decyltrimethylammonium bromide was successfully controlled by variation of the synthesis temperature, methanol ∶ water ratio in solvent and silica source in the range of 0.52 to 1.25 µm, while their mono-disp…
By self-organization polymers form a large number of superstructures with characteristic dimensions in the range of a few nanometers up to several micrometers. They can be used to produce in a controlled way a wide range of nano- and microstructured materials such as nanoparticles, nanoporous materials and drug carrie…
We have examined the changes that occur in the performance of solid oxide fuel cells (SOFCs) with Cu-ceria-yttria-stabilized zirconia anodes at 973 K following exposure to various hydrocarbon fuels, including methane, propane, n-butane, n-decane, and toluene. For cells with Cu contents of 20 wt % or less, large increa…
A Study of the Structural and Electrochemical Properties of La0.7Mg0.3 ( Ni0.85Co0.15 ) x ( x = 2.5 5.0 ) Hydrogen Storage Alloys , Pan, Hongge, Liu, Yongfeng, Gao, Mingxia, Lei, Yongquan, Wang, Qidong
Polyhydroxyalkanoates (PHAs) are biodegradable polymers with properties of thermoplastics Production of these polymers in an economically competitive fashion via bioengineering requires an understanding of the biosynthetic pathway and its regulation. This review summarizes our current knowledge of the mechanism of the…
We present the results of dealloying studies of and alloys in 0.1 M with the addition of either 0.1 M KCl, 0.1 M KBr, or 0.1 M KI. The critical overpotential decreases with the addition of halides with KI having the largest potential reduction of almost 50%. This decrease is discussed with respect to a competition bet…
The adaptive thermal comfort model links indoor comfort temperatures to prevailing weather outdoors, shifting them higher in warm weather and lower in cool weather. Adaptive comfort engineering standards hold the potential to conserve energy, but for them to work effectively it is essential that building occupants are…
An in-situ transmission electron microscopy straining technique has been used to investigate the dynamics of dislocation-defect interactions in ion-irradiated copper and the subsequent formation of defect-free channels. Defect removal frequently required interaction with multiple dislocations, although screw dislocati…
Biomineralization describes the deposition of mineral within or outside the cells of living organisms. Examples include iron and gold deposits in bacteria and other unicellular organisms, silicates in algae and diatoms, carbonates in diatoms and nonvertebrates, and calcium phosphates and carbonates in vertebrates. The…
In this paper we present a set of simple analytical solutions for the parallel and the serial contributions of space charge zones to the overall conduction in bicrystals and (brick layered) ceramics for a variety of situations. The different situations are characterized by signs of the space charge potential, by diffe…
We present ab initio and self‐consistent tight‐binding calculations on the band structure of single wall semiconducting carbon nanotubes with high degrees (up to 25 %) of boron substitution. Besides a lowering of the Fermi energy into the valence band, a regular, periodic distribution of the p‐dopants leads to the for…
We study numerical methods for dissipative particle dynamics, a system of stochastic differential equations for simulating particles interacting pairwise according to a soft potential at constant temperature where the total momentum is conserved. We introduce splitting methods and examine the behavior of these methods…
We present a new synthesis route for nitrogen doped carbon nanotubes (CNx) based on the aerosol method. Tubes with a record high concentration of nitrogen (approximately 20 atom%) have been synthesized, confirmed by electron energy loss spectroscopy (EELS). A strong correlation between the N/C ratio and morphology of…
An empirical interaction potential has been developed primarily to simulate displacement cascades in a UO2 matrix. After a bibliographical survey revealed that the potentials discussed in the literature are not entirely suitable for describing point defects and their migration, we decided to adapt the most representat…