Abstract
This paper visually demonstrates instantaneous behavior of ripples propagating on the surface of a rising bubble through an oil/water interface. This experiment uses potassium iodide (KI) 31 wt% as refractive index matching material which makes the water phase invisible. As a result, the generated micro droplets, which are shown in the preceding paper (Uemura et al. in Europhys Lett 92:34004, 2010), cannot be visible in the present results, and therefore the droplets are positively confirmed to be made of water.
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References
Lide DR (1998) CRC handbook of chemistry and physics. CRC Press, Boca Raton, pp 8–73
Uemura T, Ueda Y, Iguchi M (2010) Ripples on a rising bubble through an immiscible two-liquid interface generate numerous micro droplets. Europhys Lett 92:34004
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Uemura, T., Ueda, Y. & Iguchi, M. Visualization of ripples on the surface of a rising bubble through an immiscible oil/water interface. J Vis 14, 95–97 (2011). https://doi.org/10.1007/s12650-011-0077-y
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DOI: https://doi.org/10.1007/s12650-011-0077-y