Laser-induced forward transfer of liquid film is widely used, and the viscosity of liquid directly affects the jet formation and deposition results. In this paper, the femtosecond (fs) laser-induced forward transfer of medium viscosity (0.3 Paꞏs) liquid film was observed by time-resolved shadowgraph imaging, and it is found that the jet changed from a stable state to an explosive state with the increase of laser fluence. However, the deposition results show that when the driving laser fluence increased, the deposition droplet height first increased, then decreased, and then increased. Combined with the observation results, it is proved that the change of jet state is the reason for the above-mentioned trend of the deposition height. These results provide a reference for the observation and deposition results of femtosecond laser-induced medium viscosity liquid films transfer.
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