Herein we discuss two broad approaches for performing high sensitivity optical detection within microfluidic environments. First, we describe recent work in which fluorescence lifetime imaging has been shown to be a sensitive probe of environmental parameters such as pH, viscosity, molecular concentration and temperature. Additionally, we demonstrate how dynamic fluorescence lifetime imaging can be used to probe mixing dynamics in segmented-flow microfluidic systems. Moreover, we describe recent work at Imperial College London in which semiconducting polymer light emitting diodes and polymer photodetectors are integrated with microfluidic systems to define a novel format for point-of-care diagnostics. ©2009 IEEE.
|Title of host publication
|TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems
|Published - Dec 11 2009