An experimental investigation of the Marangoni convection around a single vapor bubble of
FC-72 on a downward-facing heated surface was reported. The boiling cell used for this
study was equipped with an optical measurement system which was dedicated to the Particle
Tracking Velocimetry (PTV) method. This method allowed us to obtain the velocity fields in
the liquid around the vapor bubble. From the velocity fields obtained, we verified the
presence of Marangoni convection rolls in the vicinity of the liquid-vapor interface.
Lastly, the influence of levels of subcooling on the velocity of convective rolls related
to the Marangoni effect was investigated.