Publication: Stable Liquid Jets Bouncing off Soft Gels
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Date
2018
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American Physical Society (APS)
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Daniel, Dan, Xi Yao, and Joanna Aizenberg. 2018. “Stable Liquid Jets Bouncing Off Soft Gels.” Physical Review Letters 120 (2) (January 12). doi:10.1103/physrevlett.120.028006.
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Abstract
A liquid jet can stably bounce off a sufficiently soft gel, by following the contour of the dimple created upon impact. This new phenomenon is insensitive to the wetting properties of the gels and was observed for different liquids over a wide range of surface tensions, γ = 24–72 mN/m. In contrast, other jet rebound phenomena are typically sensitive to γ: only high γ jet rebounds off a hard solid (e.g. superhydrophobic surface) and only low γ jet bounces off a liquid bath. This is because an air layer must be stabilized between the two interfaces. For a soft gel, no air layer is necessary and jet rebound remains stable even when there is direct liquid-gel contact.
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