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A non-equilibrium bubble with its internal pressure different from its surroundings oscillates and collapses with a jet penetrating the bubble when the bubble is subjected to a non-uniform pressure field in the surroundings.We present here the phenomena of two impacting jets resulting from a bubble nearby a rigid plate which has a perforation (hole) of around 30 micrometers in diameter.The two jets result from bubble expansion and collapse respectively.The interaction between the jets leads to a sheet of liquid with a ring of droplets surrounding the sheet.While earlier studies [1,2 ] have reported on a liquid sheet resulting from jet impact,in a head on collision,in the present work,the sheet results from two jets moving in the same direction.The size of the jets is also much smaller in the present study with a diameter of around 25 micrometers.The experimental set-up used in the study is shown in Figure 1.It comprises of a water bath with a shockwave lithotripter at its bottom,a plate with a hole and a plate holder,a high-speed camera and illumination system for recording the phenomena,and a digital delay generator.The plate is positioned at the air-water interface with air on top and water below it.The bubble is created by the interaction of a shock-wave from the lithotripter with the free surface of water through the hole in the plate.The bubble forms exactly at the location of the hole,and as it expands it pushes out the liquid present in the hole as a primary slow jet.Subsequently the bubble collapses with a jet directed towards the plate which moves through the hole.This faster jet impacts with the primary slow jet and their interaction leads to a liquid sheet with a ring of droplets surrounding the sheet.An example of the observed phenomena is shown in Figure 2 [3].The results demonstrate a method to create jets and spray droplets at the micrometer length scale on demand by actuating such jets using a bubble.High observed jet speeds (around 50 m/s) in these experiments could also be potentially used in biomedical applications such as in needle free liquid jet injectors [4].