It is widely acknowledged that splash impact can be suppressed by increasing the viscosity of the impinging drop. In this work, however, by imposing a highly viscous drop to a low-viscosity drop, it is demonstrated that the splash of the low-viscosity part of this Janus drop on superamphiphobic surfaces can be significantly promoted. The underlying mechanism is that the viscous stress exerted by the low-viscosity component drives the viscous component moving in the opposite direction, enhancing the spreading of the low-viscosity side and thereby its rim instability. The threshold velocity, above which splashing occurs, can be tuned by varying the viscosity ratio of the Janus drop. Moreover, the impact of the Janus drop can be employed to verify the mechanism of splash.

中文翻译：

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通过施加粘性零件来促进飞溅对超两性表面的影响。

众所周知，可以通过增加撞击液滴的粘度来抑制飞溅冲击。然而，在这项工作中，通过将高粘度的液滴施加到低粘度的液滴上，证明了Janus液滴的低粘度部分在超疏水表面上的飞溅可以得到显着促进。潜在的机理是由低粘度组分施加的粘性应力驱动粘性组分沿相反方向移动，从而增强了低粘度面的扩散，从而增强了其边缘不稳定性。可以通过改变Janus液滴的粘度比来调整阈值速度，在该速度以上会发生飞溅。此外，Janus跌落的影响可以用来验证飞溅的机理。