Mapping of Fluidic Mixing in Microdroplets with 1 mu s Time Resolution Using Fluorescence Lifetime Imaging

作者:Solvas Xavier Casadevall i*; Srisa Art Monpichar; demello Andrew J; Edel Joshua B
来源:Analytical Chemistry, 2010, 82(9): 3950-3956.
DOI:10.1021/ac100055g

摘要

Microdroplets generated in microfluidic channels hold great promise for use as substrates in high-throughput chemical and biological analysis. These water-in-oil compartments can serve as isolated reaction vessels, and since they can be generated at rates in excess of 1 kHz, thousands of assays can be carried out quickly and reproducibly. Nevertheless, sampling the large amount of information generated from these platforms still remains a significant challenge. For example, considering the high droplet generation rates and velocities, reproducibility and micrometer resolution are challenging requirements that must be fulfilled. Herein we combine confocal fluorescence lifetime imaging microscopy with a statistical implementation that permits the analysis of mixing phenomena within microdroplets with a temporal resolution of 1 mu s. Importantly, such exquisite resolution is only possible as a result of the large number of droplets sampled and their high structural reproducibility.

  • 出版日期2010-5-1