Combining rails and anchors with laser forcing for selective manipulation within 2D droplet arrays.

Abstract : We demonstrate the combination of a rails and anchors microfluidic system with laser forcing to enable the creation of highly controllable 2D droplet arrays. Water droplets residing in an oil phase can be pinned to anchor holes made in the base of a microfluidic channel, enabling the creation of arrays by the appropriate patterning of such holes. The introduction of laser forcing, via laser induced thermocapillary forces to anchored droplets, enables the selective extraction of particular droplets from an array. We also demonstrate that such anchor arrays can be filled with multiple, in our case two, droplets each and that if such droplets have different chemical contents, the application of a laser at their interface triggers their merging and a chemical reaction to take place. Finally by adding guiding rails within the microfluidic structure we can selectively fill large scale arrays with monodisperse droplets with significant control over their contents. In this way we make a droplet array filled with 96 droplets containing different concentrations of fluorescent microparticles.
Complete list of metadatas

Cited literature [15 references]  Display  Hide  Download

https://hal-polytechnique.archives-ouvertes.fr/hal-00804596
Contributor : Denis Roura <>
Submitted on : Friday, April 25, 2014 - 1:40:07 PM
Last modification on : Wednesday, March 27, 2019 - 4:39:25 PM

File

combining_rails_20541bV2.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Etienne Fradet, Craig Mcdougall, Paul Abbyad, Rémi Dangla, David Mcgloin, et al.. Combining rails and anchors with laser forcing for selective manipulation within 2D droplet arrays.. Lab on a Chip, Royal Society of Chemistry, 2011, 11 (24), pp.4228-4234. ⟨10.1039/C1LC20541B⟩. ⟨hal-00804596⟩

Share

Metrics

Record views

399

Files downloads

470