Time-resolved imaging of flyer dynamics for femtosecond laser-induced backward transfer of solid polymer thin films

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• 作者：M. Feinaeugle^a ; ^{m.feinaeugle@utwente.nl} ; P. Gregorčič^b ; D.J. Heath^a ; B. Mills^a ; ^{bm602@orc.soton.ac.uk} ; R.W. Eason^a
• 关键词：Laser-induced backward transfer ; Time-resolved shadowgraphy ; Femtosecond laser-induced micro-processing ; Polymer thin films ; Additive manufacturing ; SU-8
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：396
• 期：Complete
• 页码：1231-1238
• 全文大小：1721 K
• 卷排序：396

文摘

Laser-induced backward transfer was investigated by time-resolved shadowgraphy. Flyer velocity was a function of carrier, donor thickness, delay and fluence. We investigated the fluence window for intact transfer and the role of the receiver. Donor-crater profile variation was studied for different ejection regimes. Conditions for intact and fragmented flyers were determined.