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Figure 4. a) A sequence of images taken with a high-speed camera showing the ejection of a

microjet from the glass capillary opening. The solid white arrow indicates the bubble front, the
solid black arrow indicates the jet front, and the dashed black arrow indicates the jet pinch-off. b)

The jet front position evolution for three viscosities (2.8 cP – left; 75 cP – middle; 165 cP – right).
The dependence of c) the average jet velocity, d) dynamic pressure, and e) pinch-off time on the

laser pulse energy for different ink viscosities.

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