Destructive mechanisms in laser induced forward transfer

Maziyar Jalaal, Shuai Li, Martin Klein Schaarsberg, Yigong Qin, Detlef Lohse

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

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.

Original languageEnglish
Article number213703
JournalApplied physics letters
Volume114
Issue number21
DOIs
Publication statusPublished - 27 May 2019

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boundary integral method
lasers
inks
fluid dynamics
cavitation flow
recommendations
elastic waves
impulses
receivers
breakdown
impurities
defects
simulation

Cite this

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abstract = "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.",
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Destructive mechanisms in laser induced forward transfer. / Jalaal, Maziyar; Li, Shuai; Klein Schaarsberg, Martin; Qin, Yigong; Lohse, Detlef.

In: Applied physics letters, Vol. 114, No. 21, 213703, 27.05.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Destructive mechanisms in laser induced forward transfer

AU - Jalaal, Maziyar

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AU - Lohse, Detlef

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