Grooving Bubbles

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Here bubbles in a microchannel are subjected to an external ultrasonic acoustic field. Under the influence of this vibration, the bubbles self-organize into crystal-like structures with a fixed finite separation distance. Some bubbles cluster and contact.  Some bubbles also pulsate in star-shaped vibration modes. When the external sound is turned off, the bubble crystal loses form and drifts apart. For more, see Rabaud et al. 2011. (Video credit: P. Marmottant et al.)

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