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Droplet formation of suspensions is present in many industrial andtechnological processes such as coating and food engineering. Whilst the finitetime singularity of the minimum neck diameter in capillary break-up of simpleliquids can be described by well known self-similarity solutions, the pinchingof non-Brownian suspension depends in a complex way on the particle dynamics inthe thinning thread. Here we focus on the very dilute regime where the filamentcontains only isolated beads to identify the physical mechanisms leading to thepronounced acceleration of the filament thinning observed. This acceleratedregime is characterized by an asymmetric shape of the filament with an enhancedcurvature that depends on the size and the spatial distribution of theparticles within the capillary thread.

Single particles accelerate final stages of capillary break up