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To grate a liquid into tiny droplets by its impact on a hydrophobic microgrid


Brunet, P and Lapierre, F and Zoueshtiagh, F and Thomy, V and Merlen, A, To grate a liquid into tiny droplets by its impact on a hydrophobic microgrid, Applied Physics Letters, 95 Article 254102. ISSN 0003-6951 (2009) [Refereed Article]

Copyright Statement

Copyright 2009 American Institute of Physics

DOI: doi:10.1063/1.3275709


We report on experiments of drop impacting a hydrophobic microgrid of typical spacing a few tens of micrometers. Above a threshold in impact speed, liquid emerges to the other side, forming microdroplets of size about that of the grid holes. We propose a method to produce either a monodisperse spray or a single tiny droplet of volume as small as a few picolitres corresponding to a volume division of the liquid drop by a factor of up to 105. We also discuss the discrepancy of the measured thresholds with that predicted by a balance between inertia and capillarity.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Fluid mechanics and thermal engineering
Research Field:Fluid mechanics and thermal engineering not elsewhere classified
Objective Division:Manufacturing
Objective Group:Instrumentation
Objective Field:Scientific instruments
UTAS Author:Lapierre, F (Dr Florian Lapierre)
ID Code:100003
Year Published:2009
Web of Science® Times Cited:39
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2015-04-22
Last Modified:2015-08-19

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