Materials Literature
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This work investigated the effects of the use of a surfactant or the functionalization of single-walled carbon nanotubes (SWNTs) on their dispersion in uncrosslinked poly(propylene fumarate) (PPF) and the mechanical reinforcement of crosslinked composites as a function of the SWNT concentration. Rheological measuremen…
We report a numerical study, covering a wide range of packing fraction Phi and temperature T, for a system of particles interacting via a square well potential supplemented by an additional constraint on the maximum number n(max) of bonded interactions. We show that, when n(max)<6, the liquid-gas coexistence region sh…
In this paper we tackle issues relevant to model based control design for a Urea based Selective Catalytic Reduction (SCR) process relevant to automotive applications. A three state, control oriented, lumped parameter model of the system is used to investigate essential controllability and observability properties of…
Oxide ceramics are sensitive to slow crack growth because adsorption of water can take place at the crack tip, leading to a strong decrease of the surface energy in humid (or air) conditions. This is a major drawback concerning demanding, long-term applications such as orthopaedic implants. Here we show that a specifi…
Single atom/molecule manipulation with a scanning-tunneling-microscope (STM) tip is an innovative experimental technique of nanoscience. Using STM-tip as an engineering or analytical tool, artificial atomic-scale structures can be fabricated, novel quantum phenomena can be probed, and properties of single atoms and mo…
Multilevel Monte Carlo simulations of the vortex matter in the highly-anisotropic high-temperature superconductor Bi$_2$Sr$_2$CaCu$_2$O$_8$ were performed. We introduced low concentration of columnar defects satisfying $B_ϕ\le B$. Both the electromagnetic and Josephson interactions among pancake vortices were included…
In this paper we consider the essential electronic excited states in parallel chains of semiconducting polymers that are currently being explored for photovoltaic and light-emitting diode applications. In particular, we focus upon various type II donor-acceptor heterojunctions and explore the relation between the exci…
The coupling constant dependence is derived in time-dependent {\em current} density functional theory. The scaling relation can be used to check approximate functionals and in conjunction with the adiabatic connection formula to obtain the ground-state energy from the exchange-correlation kernel. The result for the un…
We determine the phase diagram of liquid supercooled water by extensive computer simulations using the TIP5P-E model. We find that the transformation of water into a low density liquid in the supercooled range strongly enhances the solubility of hydrophobic particles. The transformation of water into a tetrahedrally s…
We report an experimental study of diffusion in a quasi-one-dimensional (q1D) colloid suspension which behaves like a Tonks gas. The mean squared displacement as a function of time is described well with an ansatz encompassing a time regime that is both shorter and longer than the mean time between collisions. The ans…
It is theoretically predicted that the Nernst coefficient is strongly suppressed and the thermal conductance is quantized in the quantum Hall regime of the two-dimensional electron gas. The Nernst effect is the induction of a thermomagnetic electromotive force in the $y$ direction under a temperature bias in the $x$ d…
We report results on the interrelation between driving force, roughness exponent, branching and crack speed in a finite element model. We show that for low applied loadings the crack speed reaches the values measured in the experiments, and the crack surface roughness is compatible with logarithmic scaling. At higher…
Abstract Summary: This paper aims to discuss and review developments in plasma surface modification techniques which have been seen over the past few years, with particular emphasis on low energy or soft plasma assisted surface polymerisation processes. While early work focussed mainly on protective coatings and surfa…
We have studied the crystal and magnetic structures of the magnetoelectric materials $R{\mathrm{Mn}}_{2}{\mathrm{O}}_{5}$ $(R=\mathrm{Tb},\mathrm{Ho},\mathrm{Dy})$ using neutron diffraction as a function of temperature. All three materials display incommensurate antiferromagnetic ordering below $40\phantom{\rule{0.3em…
The well-ordered aluminum oxide film formed by oxidation of the NiAl(110) surface is the most intensely studied metal surface oxide, but its structure was previously unknown. We determined the structure by extensive ab initio modeling and scanning tunneling microscopy experiments. Because the topmost aluminum atoms ar…
Self-assembly is an effective strategy for the creation of periodic structures at the nanoscale. However, because microelectronic devices use free-form design principles, the insertion point of self-assembling materials into existing nanomanufacturing processes is unclear. We directed ternary blends of diblock copolym…
The research has conducted to investigate the possibility of corn cobs utilization in particleboards production . Forty two boards were manufactured within two experiments . At the first one 18 boards produced to test the effect of two factors ; particle size ( 3 levels ) , and resin content ( 2 levels ) on the board…
Abstract Clay materials play a key role in determining the retention capacity of a soil, and are widely used in waste treatments. One of the most commonly used clays is palygorskite. The aim of this research is to determine the chemical species formed by Zn when retained in a palygorskitic clay material. Adsorption is…
Phosphate glasses were prepared by melting quenching process, and glass formation and dissolution properties were studied. The glass forming region in the K₂O-CaO-P₂O 5 system is quietly agreed with the report by Mazurin OV et al. with M₂O-M'O-P₂O 5 system (M : monovalent cation, M'divalent cation). Conditionally thes…
Se realizó un estudio taxonómico de carpóforos de macromicetes recolectados entre los meses de junio y noviembre de 2005 en áreas urbanas y semi rurales de la zona central de Chile. Este trabajo es un reporte preliminar de las especies determinadas (entre ellasSchizophyllum commune) con notas sobre algunos aspectos ec…