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Sequential deposition of overlapping droplets to form a liquid line

  • Alice B. Thompson (a1), Carl R. Tipton (a1), Anne Juel (a1), Andrew L. Hazel (a1) and Mark Dowling (a2)...

Abstract

Microdroplet deposition is a technology that spans applications from tissue engineering to microelectronics. Our new high-speed imaging measurements reveal how sequential linear deposition of overlapping droplets on flat uniform substrates leads to striking non-uniform morphologies for moderate contact angles. We develop a simple physical model, which for the first time captures the post-impact dynamics drop-by-drop: surface-tension drives liquid redistribution, contact-angle hysteresis underlies initial non-uniformity, while viscous effects cause subsequent periodic variations.

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Corresponding author

Present address: Department of Mathematics, Imperial College London, London SW7 2AZ, UK. Email address for correspondence: alice.thompson1@imperial.ac.uk

References

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Sequential deposition of overlapping droplets to form a liquid line

  • Alice B. Thompson (a1), Carl R. Tipton (a1), Anne Juel (a1), Andrew L. Hazel (a1) and Mark Dowling (a2)...

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