Mode Selection in the Spontaneous Motion of an Alcohol Droplet

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An alcohol (pentanol) droplet exhibits spontaneous agitation on an aqueous solution, driven by a solutal Marangoni effect. We found that the droplet's mode of motion is controlled by its volume. A droplet with a volume of less than $0.1 μ\rm{l}$ shows irregular translational motion, whereas intermediate-sized droplets of $0.1-200 μ\rm{l}$ show vectorial motion. When the volume is above $300 μ\rm{l}$, the droplet splits into smaller drops. These experimental results regarding mode selection are interpreted in terms of the wave number selection depending on the droplet volume.
4 pages, 5 figures

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Adaptation and Self-Organizing Systems, Pattern Formation and Solitons

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http://salesiana.dossiersoluciones.com/handle/123456789/95574

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nlin/0502045
 http://arxiv.org/abs/nlin/0502045
 Phys. Rev. E, 71, 065301 (2005)
 doi:10.1103/PhysRevE.71.065301

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arXiv