Results 291 to 300 of about 1,702,102 (343)
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Light scattering studies of aggregation phenomena
Physica A: Statistical Mechanics and its Applications, 1995Abstract We present recent results in the field of colloidal aggregation. We first present static light scattering data of aggregation in intermediate regimes between RLCA and DLCA. In particular, we show that working with dense solutions, new and unexpected features are observed.
D. Asnaghi +3 more
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Oxygen Aggregation Phenomena in Silicon
MRS Proceedings, 1987ABSTRACTOxygen precipitation in Czochralski silicon heated in the range 400–1050°C is reviewed. For T≥525° C, Si02 particles form at the normal diffusion rate and there is generation of self-interstitials. At the lower temperatures, the existence of the interfacial energy causes an apparent increase in the solid solubility as the agglomerates become ...
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Aggregation phenomena and fractal structures
Physica A: Statistical Mechanics and its Applications, 1986Abstract In disordered aggregation processes fractal structures appear in a natural way. Many of their properties can be characterised in terms of scaling and numerous models have been introduced to describe different physical situations. “Clustering of Clusters” is a model applicable to several growth processes in colloid science and elsewhere.
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Dynamic Scaling in Aggregation Phenomena
1985The dynamics of the diffusion-limited cluster-cluster aggregation model (CCA) is reviewed through the temporal evolution of the cluster size distribution ns(t), which is the number of clusters of size s at time t. In recent studies it was shown that the results of the Monte-Carlo simulations can be well represented by a dynamic scaling function of the ...
Fereydoon Family, Tamas Vicsek
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Aggregation phenomena in photobicyclised pyridinium salts
New Journal of Chemistry, 2017Absorption and emission spectra of PQPBF4and BPDTQClO4in water provide evidence, supported by theoretical calculations, of H-aggregation in this solvent.
A. Aracena +4 more
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In situ atomic observations of aggregation growth and evolution of penta-twinned gold nanocrystals
Nature CommunicationsThe twin boundaries and inherent lattice strain of five-fold twin (5-FT) structures offer a promising and innovative approach to tune nanocrystal configurations and properties, enriching nanomaterial performance. However, a comprehensive understanding of
Miao Song +10 more
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Aggregation Phenomena in Lignin
The present chapter describes a survey of the aggregation phenomena occurring during lignin nanostructures formation, the main variables affecting them, the most common strategies for their preparation and their applications. The interactions affecting the conformation of single lignin chains in a specific solvating environment pertain to cohesive ...Cestari, Chiara +2 more
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SAXS investigation on aggregation phenomena in supercritical CO2
The European Physical Journal E, 2002Synchrotron Small-Angle X-Ray scattering (SAXS) measurements on aggregate formation of a Polyvinyl acetate- b-Perfluoro octyl acrylate (PVAc- b-PFOA) block copolymer in supercritical CO(2) are here reported. Experiments were carried out for a series of different thermodynamic conditions, changing the solvent density by profiling both the pressure at ...
Lo Celso F +7 more
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Statistical physics models of aggregation phenomena
Journal of Physics A: Mathematical and General, 1997Summary: Aggregation phenomena of elementary particles into clusters is one of the most fascinating and challenging problems of statistical physics. Here we adopt a stochastic approach for the modelling of these phenomena. More precisely, we formulate the problem as follows (which we shall refer to as the `cavity' method): given a population of \(N ...
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