text: We have discussed recent work on pattern formation processes in ﬁlms and drops of evaporating 
  
  suspensions/solutions of polymers and particles. After reviewing experiments on suspensions of 
  
  thiol-coated gold nanoparticles in toluene we have focused on the modelling of the transport and 
  
  phase change processes involved. A theoretical approach to the modelling of the hydrodynamics 
  
  on the mesoscale has been described as well as more microscopic models for the dynamics in the 
  
  observed nanoscopic ‘postcursor’ ﬁlm. In particular, we have introduced (i) a microscopic kinetic 
  
  Monte Carlo model, (ii) a dynamical density functional theory and (iii) a hydrodynamic thin ﬁlm 
  
  model. 
  
  The kinetic Monte Carlo model and the dynamical density functional theory can both be used to 
  
  investigate and understand the formation of polygonal networks, spinodal and branched structures 
  
  resulting from the dewetting of an ultrathin ‘postcursor’ ﬁlm that remains behind the mesoscopic 
  
  dewetting front. They are, however, not capable of describing the dynamical processes in a meso- 