Published in

American Institute of Physics, Biomicrofluidics, 3(11), p. 031101

DOI: 10.1063/1.4984131

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An intra-droplet particle switch for droplet microfluidics using bulk acoustic waves

Journal article published in 2017 by Anna Fornell ORCID, Mathias Ohlin, Fabio Garofalo, Johan Nilsson, Maria Tenje ORCID
This paper is available in a repository.
This paper is available in a repository.

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Data provided by SHERPA/RoMEO

Abstract

To transfer cell- and bead-assays into droplet-based platforms typically requires the use of complex microfluidic circuits, which calls for methods to switch the direction of the encapsulated particles. We present a microfluidic chip where the combination of acoustic manipulation at two different harmonics and a trident-shaped droplet-splitter enables direction-switching of microbeads and yeast cells in droplet microfluidic circuits. At the first harmonic, the encapsulated particles exit the splitter in the center daughter droplets, while at the second harmonic, the particles exit in the side daughter droplets. This method holds promises for droplet-based assays where particle-positioning needs to be selectively controlled.