HOT article: precise, high speed droplet formation

Isolating biological or biochemical content in aqueous droplets within an immiscible oil medium on a microfluidic device allows samples to be transported without cross-contamination or dispersion.  But generating droplets at a suitably high speed with precise volume control has been a challenge.

Now Pei-Yu Chiou and Sung-Yong Park from UCLA have developed a pulse laser-driven droplet mechanism that allows droplet formation of up to 10000 droplets per second with controllable volumes between 1-150 pL and >1% volume variation.

Their device (shown below) consists of two microfluidic channels connected by a nozzle-like opening. A highly focused intense laser pulse induces a rapidly expanding cavitation bubble to push the nearby water into the oil channel for droplet formation.

This HOT article is free to access until the end of March – so download it today and see how they did it!

High-speed droplet generation on demand driven by pulse laser-induced cavitation
Sung-Yong Park, Ting-Hsiang Wu, Yue Chen, Michael A. Teitell and Pei-Yu Chiou
Lab Chip, 2011, 11, 1010-1012
DOI: 10.1039/C0LC00555J

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One Response to “HOT article: precise, high speed droplet formation”

  1. [...] Park, S., Wu, T.-H., Chen, Y., Teitell, M. A., Chiou, P. Y., “High-speed droplet generation on demand driven by pulse laser-induced cavitation,” Lab on a Chip, Vol. 11, pp. 1010 – 1012, 2011. (Selected as a HOT article) [...]

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