Random walk in an eddy and tube formation from fine particles

Tubular shape formation of an ensemble of ultrafine particles, captured by microscopic eddies in a fluid or gaseous medium, is investigated. In the circulation flow of the eddy, the small particles are driven by the deterministic hydrodynamical forces and the random forces of Brownian motion. The co...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Chaos (Woodbury, N.Y.) N.Y.), 2001-09, Vol.11 (3), p.674-677
Hauptverfasser: Kish, L. B., Vajtai, R., Ajayan, P. M.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Tubular shape formation of an ensemble of ultrafine particles, captured by microscopic eddies in a fluid or gaseous medium, is investigated. In the circulation flow of the eddy, the small particles are driven by the deterministic hydrodynamical forces and the random forces of Brownian motion. The conditions for dynamically/statistically stable tube formation and the resulting tube parameters are obtained by analytic calculations and computer simulations, respectively. The model yields striking similarities to the characteristics of nanotube formation observed in turbulent media such as the carbon arc, and throws some light on tubular formation observed in fluid media.
ISSN:1054-1500
1089-7682
DOI:10.1063/1.1383596