ABSTRACT
Gupta et al. [24] investigated the stability of capsules whose surface is covered with an insoluble Langmuir monolayer, translating in a Hele-Shaw cell under the influence of buoyancy. In this case, the characteristic velocity is given by
. In the analysis of these authors, the evolution of a perturbed shape was computed by numerical methods, and critical conditions for breakup were established. Similar computations were performed for the buoyancy-driven motion of clean liquid drops [23].
