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Issue 2, 2015
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“V-junction”: a novel structure for high-speed generation of bespoke droplet flows

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Abstract

We present the use of microfluidic “V-junctions” as a droplet generation strategy that incorporates enhanced performance characteristics when compared to more traditional “T-junction” formats. This includes the ability to generate target-sized droplets from the very first one, efficient switching between multiple input samples, the production of a wide range of droplet sizes (and size gradients) and the facile generation of droplets with residence time gradients. Additionally, the use of V-junction droplet generators enables the suspension and subsequent resumption of droplet flows at times defined by the user. The high degree of operational flexibility allows a wide range of droplet sizes, payloads, spacings and generation frequencies to be obtained, which in turn provides for an enhanced design space for droplet-based experimentation. We show that the V-junction retains the simplicity of operation associated with T-junction formats, whilst offering functionalities normally associated with droplet-on-demand technologies.

Graphical abstract: “V-junction”: a novel structure for high-speed generation of bespoke droplet flows

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Article information


Submitted
23 Sep 2014
Accepted
20 Oct 2014
First published
20 Oct 2014

Analyst, 2015,140, 414-421
Article type
Paper

“V-junction”: a novel structure for high-speed generation of bespoke droplet flows

Y. Ding, X. Casadevall i Solvas and A. deMello, Analyst, 2015, 140, 414
DOI: 10.1039/C4AN01730G

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