TY - JOUR
T1 - Destructive mechanisms in laser induced forward transfer
AU - Jalaal, Maziyar
AU - Li, Shuai
AU - Klein Schaarsberg, Martin
AU - Qin, Yigong
AU - Lohse, Detlef
PY - 2019/5/27
Y1 - 2019/5/27
N2 - Laser Induced Forward Transfer (LIFT) is an additive direct-writing technique, in which a piece of material (ink) is transferred from a donor to a receiver surface, utilizing a laser impulse. In practice, the process of jet formation can suffer from irreproducibility. We identify two possible destructive mechanisms due to multiple optical breakdowns (originating from imperfections of the optical system) and rarefaction waves (originating from impurities), both with harmful consequences caused by cavitation. Based on experiments in a model system that allows for visualization and numerical simulations employing the boundary integral method, we reveal the underlying fluid dynamics of both mechanisms. Finally, to overcome the irreproducibility, we provide recommendations for the industrial use of LIFT.
AB - Laser Induced Forward Transfer (LIFT) is an additive direct-writing technique, in which a piece of material (ink) is transferred from a donor to a receiver surface, utilizing a laser impulse. In practice, the process of jet formation can suffer from irreproducibility. We identify two possible destructive mechanisms due to multiple optical breakdowns (originating from imperfections of the optical system) and rarefaction waves (originating from impurities), both with harmful consequences caused by cavitation. Based on experiments in a model system that allows for visualization and numerical simulations employing the boundary integral method, we reveal the underlying fluid dynamics of both mechanisms. Finally, to overcome the irreproducibility, we provide recommendations for the industrial use of LIFT.
UR - http://www.scopus.com/inward/record.url?scp=85066753228&partnerID=8YFLogxK
U2 - 10.1063/1.5095520
DO - 10.1063/1.5095520
M3 - Article
AN - SCOPUS:85066753228
VL - 114
JO - Applied physics letters
JF - Applied physics letters
SN - 0003-6951
IS - 21
M1 - 213703
ER -