1997
DOI: 10.1016/s0927-7757(96)03747-8
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Capture or repulsion of treated nylon particles by an ice-water interface

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Cited by 13 publications
(9 citation statements)
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“…The peak in the particlevelocity "lm-thickness curve is extremely narrow, however, so that even for the slowest solidi"cation velocity displayed, just 5% greater than the critical velocity, the total displacement is only a fraction of the particle radius. This result is consistent with the observations of Azouni and colleagues [26] who measured particle displacements of up to a few particle diameters in a series of solidi"cation experiments involving coated nylon spheres.…”
Section: Particle Displacementsupporting
confidence: 92%
“…The peak in the particlevelocity "lm-thickness curve is extremely narrow, however, so that even for the slowest solidi"cation velocity displayed, just 5% greater than the critical velocity, the total displacement is only a fraction of the particle radius. This result is consistent with the observations of Azouni and colleagues [26] who measured particle displacements of up to a few particle diameters in a series of solidi"cation experiments involving coated nylon spheres.…”
Section: Particle Displacementsupporting
confidence: 92%
“…By contrast, when smaller particles interacted with ice grown at lower solidification rates, particles were pushed ahead of the interface and remained nearly surrounded by the bulk liquid. Subsequent efforts to explain these phenomena have been driven by their importance to solidification dynamics in industrial and biological processes in addition to ground freezing phenomena ͑Uhlmann et Hoekstra and Miller, 1967;Bolling and Cissé, 1971;Omenyi and Neumann, 1976;Gilpin, 1980c;Bronshtein et al, 1981;Pötschke and Rogge, 1989;Azouni et al, 1990Azouni et al, , 1997Shangguan et al, 1992;Asthana and Tewari, 1993;Lipp and Körber, 1993;Sen et al, 1997͒. A comprehensive description of the underlying mechanisms was first given by Chernov and his colleagues ͑Chernov and Mel 'nikova, 1966;Chernov and Temkin, 1977͒, and has since been generalized and placed within the context of our modern understanding of premelting behavior ͑Dash, 1989b; Rempel andWorster, 1999, 2001͒. Intermolecular forces that act between the particle, ice, and liquid generate a premelted film and produce a net thermomolecular force that disjoins the particle from the ice surface.…”
Section: Frost Heavementioning
confidence: 99%
“…The architecture observed in freeze-cast samples provides experimental support of the structural differences predicted by freezing-front velocity considerations. Azouni et al (1997) monitored the unidirectional freezing process in doubly distilled water with a shadow graph, in which thermal disturbances refract light and the resulting shadows image the thermal flow. They observed that varying the freezing rate resulted in three distinctly different ice structures; first, a dense ice layer followed by an intermediate columnar zone and finally a lamellar structure with highly aligned porosity.…”
Section: (A) Particle Trapping and Rejectionmentioning
confidence: 99%