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Femtosecond versus picosecond laser pulses for film-free laser bioprinting

Abstract : We investigate the properties of microjets in the context of film-free laser induced forward transfer in the femtosecond and picosecond regimes. The influence of the pulse duration (ranging from 0.4 to 12 ps) and the energy (ranging from 6 to 12 μJ) is systematically studied on the height, diameter, speed, volume, and shape of the jets. The 400 fs pulses generate thin and stable jets compatible with bioprinting, while 14 ps pulses generate more unstable jets. A pulse duration around 8 ps seems, therefore, to be an interesting trade-off to cover many bio-applications of microjets generated by lasers.
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Submitted on : Wednesday, June 17, 2020 - 7:57:40 AM
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Stephane Petit, Olivia Kérourédan, Raphaël Devillard, Eric Cormier. Femtosecond versus picosecond laser pulses for film-free laser bioprinting. Applied optics, Optical Society of America, 2017, 56 (31), pp.8648-8655. ⟨10.1364/AO.56.008648⟩. ⟨inserm-02870959⟩



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