Measuring the pressures across microfluidic droplets with an optical tweezer

作者:Jin Yuhang*; Orth Antony; Schonbrun Ethan; Crozier Kenneth B
来源:Optics Express, 2012, 20(22): 24450-24464.
DOI:10.1364/OE.20.024450

摘要

We introduce a novel technique that enables pressure measurements to be made in microfluidic chips using optical trapping. Pressure differentials across droplets in a microfluidic channel are determined by monitoring the displacements of a bead in an optical trap. We provide physical interpretation of the results. Our experiments reveal that our device has high sensitivity and can be operated over a wide range of pressures from several Pascals to several thousand Pascals.

  • 出版日期2012-10-22