Critical Conditions for Jumping Droplets

Critical Conditions for Jumping Droplets

A droplet initially overstretched on a solid substrate pulls back to lower the contact area and may jump away from the substrate. The condition to realize such macroscopic behaviors is often dictated by microscopic characteristics, such as contact-line pinning, in nontrivial ways. Here we theoretica...

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Veröffentlicht in:Physical review letters 2019-07, Vol.123 (2), p.024502-024502, Article 024502
Hauptverfasser: Vo, Quoc, Tran, Tuan
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Sprache:eng
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Bioengineering
Droplets
Jumping
Microfluidics
Pinning
Substrates
Three dimensional printing
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Tran, Tuan
description A droplet initially overstretched on a solid substrate pulls back to lower the contact area and may jump away from the substrate. The condition to realize such macroscopic behaviors is often dictated by microscopic characteristics, such as contact-line pinning, in nontrivial ways. Here we theoretically and experimentally reveal the hidden contribution of contact-line pinning in forming the critical condition for detachment of a droplet from a solid substrate, among other dominating hydrodynamical effects. Our results demonstrate the relation between classical theories on contact-line pinning and various droplet manipulating applications in microfluidics and bioprinting.
doi_str_mv 10.1103/PhysRevLett.123.024502
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source American Physical Society Journals; EZB-FREE-00999 freely available EZB journals
subjects Bioengineering
Droplets
Jumping
Microfluidics
Pinning
Substrates
Three dimensional printing
title Critical Conditions for Jumping Droplets
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