  During detachment of a viscous fluid extruded from a nozzle a filament
linking the droplet to the latter is formed. Under the effect of surface
tension the filament thins until pinch off and final detachment of the droplet.
In this paper we study the effect of the presence of individual particles
trapped in the filament on the detachment dynamics using granular suspensions
of small volume fractions ({\phi} < 6%). We show that even a single particle
strongly modifies the detachment dynamics. The particle perturbs the thinning
of the thread and a large droplet of fluid around the particle is formed. This
perturbation leads to an acceleration of the detachment of the droplet compared
to the detachment ob- served for a pure fluid. We quantify this acceleration
for single particles of different sizes and link it to similar ob- servations
for suspensions of small volume fractions. Our study also gives more insight
into particulate effects on de- tachment of more dense suspensions and allows
to explain the accelerated detachment close to final pinch off observed
previously (Bonnoit et al 2012)
