Article (Scientific journals)
Droplet formation by squeezing in a microfluidic cross-junction
Van Loo, Stéphanie; Stoukatch, Serguei; Kraft, Michael et al.
2016In Microfluidics and Nanofluidics, 20 (10), p. 1-12
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Keywords :
Droplet Microfluidics; Microfluidics; Droplet formation; Satellite Droplet; Surfactant; Elasticity
Abstract :
[en] In microfluidics, flow focusing is widely used to produce water-in-oil droplets in microchannels at high frequency. We here report an experimental study of droplet formation in a microfluidic cross-junction with a minimum number of geometrical parameters. We mostly focus on the squeezing regime, which is composed of two distinct steps : filling and pinching. The duration of each step (and corresponding volumes of each liquid phase) are analyzed. They vary according to both water and oil flow rates. These variations provide several insights about the fluid flows in both phases. We propose several scaling laws to relate the droplet volume and frequency to the flow rate of both phases. We also discuss the influence of surfactant and channel compliance on droplet formation.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Engineering, computing & technology: Multidisciplinary, general & others
Physics
Author, co-author :
Van Loo, Stéphanie ;  Université de Liège > Département d'aérospatiale et mécanique > Microfluidique
Stoukatch, Serguei  ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Kraft, Michael ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Gilet, Tristan  ;  Université de Liège > Département d'aérospatiale et mécanique > Microfluidique
Language :
English
Title :
Droplet formation by squeezing in a microfluidic cross-junction
Publication date :
12 October 2016
Journal title :
Microfluidics and Nanofluidics
ISSN :
1613-4982
eISSN :
1613-4990
Publisher :
Springer, Berlin, Germany
Volume :
20
Issue :
10
Pages :
1-12
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Interuniversitary attraction Poles Programme (IAP7/38 MicroMAST)
Available on ORBi :
since 12 October 2016

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