Session 12

[OMC14-03] Optical trapping of flow tracers for the characterization of thermo-osmotic slip flows around charged microparticles

*Tetsuro Tsuji¹, Satoshi Mei¹, Satoshi Taguchi¹ (1. Kyoto University)

Tracer nanoparticles for the visualization of microflow are sometimes scarce in a test section, especially when the test section is small, e.g., a close vicinity of a solid surface. In this study, the optical trapping of the tracers is applied to facilitate the visualization of thermo-osmotic slip flow in the vicinity of microparticles' surface, by enforcing the tracers to stay close to the surface of the microparticles.