Pattern dynamics in a perturbed printer's instability experiment

We report experimental results concerning observation of a pattern forming system, subject to directional viscous fingering (printer's instability). This system was excited by a time-dependent, periodic perturbation. A variety of spatiotemporal effects was observed, including pattern transient...

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Bibliographic Details
Published in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2008-06, Vol.77 (6 Pt 2), p.066310-066310, Article 066310
Main Authors: Santos, R L, Agero, U, Figueiredo, J M A
Format: Article
Language:English
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Summary:We report experimental results concerning observation of a pattern forming system, subject to directional viscous fingering (printer's instability). This system was excited by a time-dependent, periodic perturbation. A variety of spatiotemporal effects was observed, including pattern transient dynamics, wave vector selection, and morphological transitions. Detailed measurement of pattern shape and its associated Fourier modes assured the detection of a crossover between different regimes of the pattern evolution.
ISSN:1539-3755
1550-2376
DOI:10.1103/PhysRevE.77.066310