Deposition-on-contact regime and the effect of donor-acceptor distance during laser-induced forward transfer of viscoelastic liquids

Emre Turkoz, Antonio Perazzo, Luc Deike, Howard A. Stone, Craig B. Arnold

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Optimizing the direct-writing of viscoelastic liquids requires an understanding of the governing physics during jet and droplet formation. In this article, we study the effect of the distance between the donor and acceptor surfaces and identify a unique deposition-on-contact regime associated with viscoelasticity. For a given laser pulse energy, depending on the liquid film thickness, rheological properties, and the distance between the liquid film and the acceptor surface, the resulting jet can result in either a rapid deposition of a small volume or the formation of a liquid bridge that delays the breakup of the liquid filament and can result in deposition of multiple droplets. By adjusting the gap distance between the donor and acceptor surfaces, we show that it is possible to obtain single drop depositions via deposition-on-contact from viscoelastic liquids. Using dimensionless parameters, we present criteria that can be used to predict the different regimes observed in the experiments.

Original languageEnglish (US)
Pages (from-to)2738-2747
Number of pages10
JournalOptical Materials Express
Volume9
Issue number7
DOIs
StatePublished - Jan 1 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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