Displacement of particles in microfluidics by laser-generated tandem bubbles.

The dynamic interaction between laser-generated tandem bubble and individual polystyrene particles of 2 and 10 μm in diameter is studied in a microfluidic channel (25 μm height) by high-speed imaging and particle image velocimetry. The asymmetric collapse of the tandem bubble produces a pair of microjets and associated long-lasting vortices that can propel a single particle to a maximum velocity of 1.4 m∕s in 30 μs after the bubble collapse with a resultant directional displacement up to 60 μm in 150 μs. This method may be useful for high-throughput cell sorting in microfluidic devices.

Full Text

Duke Authors

Cited Authors

  • Lautz, J; Sankin, G; Yuan, F; Zhong, P

Published Date

  • November 1, 2010

Published In

Volume / Issue

  • 97 / 18

Start / End Page

  • 183701 -

PubMed ID

  • 21124726

International Standard Serial Number (ISSN)

  • 0003-6951

Digital Object Identifier (DOI)

  • 10.1063/1.3511538

Language

  • ENG