Passive breakups of isolated drops and one-dimensional assemblies of drops in microfluidic geometries: experiments and models. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Lab on a Chip Année : 2013

Passive breakups of isolated drops and one-dimensional assemblies of drops in microfluidic geometries: experiments and models.

Louis Salkin
  • Fonction : Auteur
  • PersonId : 944722
Alexandre Schmit
  • Fonction : Auteur
  • PersonId : 943627

Résumé

Using two different geometries, rectangular obstacles and asymmetric loops, we investigate the breakup dynamics of deformable objects, such as drops and bubbles, confined in microfluidic devices. We thoroughly study two distinct flow configurations that depend on whether object-to-object hydrodynamic interactions are allowed. When such interactions are introduced, we find that the volumes of the daughter objects created after breakup solely depend on the geometrical features of the devices and are not affected by the hydrodynamic and physicochemical variables; these results are in sharp contrast with those obtained for non-interacting objects. For both configurations, we provide simple phenomenological models that capture well the experimental findings and predict the evolution of the volumes of the daughter objects with the controlling dimensionless quantities that are identified. We introduce a mean-field approximation, which permits accounting for the interactions between objects during breakup and we discuss its conditions of validity.

Domaines

Biophysique
Fichier principal
Vignette du fichier
LabChipPostPrintSalkin.pdf (1.55 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00844517 , version 1 (06-12-2013)

Identifiants

Citer

Louis Salkin, Alexandre Schmit, Laurent Courbin, Pascal Panizza. Passive breakups of isolated drops and one-dimensional assemblies of drops in microfluidic geometries: experiments and models.. Lab on a Chip, 2013, 13 (15), pp.3022-32. ⟨10.1039/c3lc00040k⟩. ⟨hal-00844517⟩
142 Consultations
170 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More