Understanding flow properties at the solid/liquid interface is important for numerous of technological applications in nanotechnology and microfluidic. The strong scientific interest in the field of thin liquid films led to new conclusions on the impact of hydrodynamic slippage on the dewetting dynamics and on the shape of the rim growing at the three phase contact line.This work consists of verifying the validity of these findings at late stage of dewetting, i.e. while the rim instability develops, and of drawing new conclusions linking interactions at interfaces with the later instability. In a first part, a qualitative analysis demonstrates a rim instability decomposed into several regimes, while fingering solely develops with flows with strong interfacial slip length. A closer look of the instability at nanometric resolution evidences the onset of a second flow varying with slippage but also with viscosity. We finally propose a new method to determine to what extent hydrodynamic slippage interferes flow properties in the rim.
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