Reduction of Transfer Threshold Energy for Laser-Induced Jetting of Liquids using Faraday Waves

Emre Turkoz, Seungyeon Kang, Xiaohan Du, Luc Deike, Craig B. Arnold

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Flow-focusing is used in microfluidics to generate droplets that are smaller than the characteristic length scale of the flow geometry. Conventionally, flow-focusing takes place inside micrometer-sized channels due to capillary effects. In this study, we demonstrate that the transient meniscus profile created with Faraday waves on liquid films can enable flow-focusing. Using a magnetic shaker, we generate Faraday waves on a liquid film leading to flow-focusing that increases the resolution of a nozzleless, jet-based printing technique called blister-actuated laser-induced forward transfer (BALIFT). We perform experiments to demonstrate how transient meniscus formation enables jetting at lower laser-pulse energies than the threshold, and use numerical modeling to examine this process at smaller length scales relevant to printing applications.

Original languageEnglish (US)
Article number054022
JournalPhysical Review Applied
Volume11
Issue number5
DOIs
StatePublished - May 8 2019

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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