  The growing evidence pointing at core-collapse supernovae as large dust
producers makes young massive stellar clusters ideal laboratories to study the
evolution of dust immersed into a hot plasma. Here we address the stochastic
injection of dust by supernovae and follow its evolution due to thermal
sputtering within the hot and dense plasma generated by young stellar clusters.
Under these considerations, dust grains are heated by means of random
collisions with gas particles which results on the appearance of infrared
spectral signatures. We present time-dependent infrared spectral energy
distributions which are to be expected from young stellar clusters. Our results
are based on hydrodynamic calculations that account for the stochastic
injection of dust by supernovae. These also consider gas and dust radiative
cooling, stochastic dust temperature fluctuations, the exit of dust grains out
of the cluster volume due to the cluster wind and a time-dependent grain size
distribution.
