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Oblique impact of drops onto a solid or liquid surface is frequently observedin nature. Most studies on drop impact and splashing, however, focus onperpendicular impact. Here, we study oblique impact of 100-micrometer dropsonto a deep liquid pool, where we quantify the splashing threshold, maximumcavity dimensions and cavity collapse by high-speed imaging above and below thewater surface. Gravity can be neglected in these experiments. Three differentimpact regimes are identified: smooth deposition onto the pool, splashing inthe direction of impact only, and splashing in all directions. We providescaling arguments that delineate these regimes by accounting for the dropimpact angle and Weber number. The angle of the axis of the cavity createdbelow the water surface follows the impact angle of the drop irrespectively ofthe Weber number, while the cavity depth and its displacement with respect tothe impact position do depend on the Weber number. Weber number dependency ofboth the cavity depth and displacement is modeled using an energy argument.

Oblique drop impact onto a deep liquid pool