Journal
PHYSICAL REVIEW LETTERS
Volume 122, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.228001
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Funding
- Royal Society [URFnRn180016, RGFnEAn18002]
- EPSRC [EP/P024173/1]
- Mexican Energy Ministry (SENER)
- CONACyT Mexico
- Welsh European Funding Office (WEFO) through the Flexible Integrated Energy Systems program (FLEXIS)
- EPSRC [EP/P024173/1] Funding Source: UKRI
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In this Letter, we study the splashing behavior of droplets upon impact onto a variety of substrates with different wetting properties, ranging from hydrophilic to superhydrophobic surfaces. In particular, we study the effects of the dynamic contact angle on splashing. The experimental approach uses high-speed imaging and image analysis to recover the apparent contact angle as a function of the spreading speed. Our results show that neither the Capillary number nor the so-called splashing parameter are appropriate to characterize the splashing behavior under these circumstances. However, we show that the maximum dynamic advancing contact angle and the splashing ratio beta adequately characterize the splashing behavior.
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