Experimental study on behaviors of low-Stokes number particles in weakly chaotic structures induced by thermocapillary effect within a closed system with a free surface

We focus on the behaviors of the low-Stokes-number particles in a thermocapillary-induced convection within a closed geometry with a free surface, known as a half-zone liquid bridge. The motions of the spherical particles suspended by the bridge of a high-Prandtl-number liquid (Pr=28.6) are tracked via two-dimensional and three-dimensional particle tracking velocimetry. Special attention is paid to the behaviors of the suspended particles in the...