text: only results in the small heap of material visible at the left hand side of Fig. 6(a). The decrease 
  
  in hp on the right side of Fig. 6(a) arises due to the diffusion of particles to the right of the initial 
  
  front position; (ii) for very low evaporation rates, the ﬁlm dynamics is dominated by convective 
  
  dewetting as this process acts on a much shorter time scale than evaporation. As a result, all the 
  
  liquid is collected into a drop before evaporation slowly removes the remaining solvent. Under 
  
  these conditions most of the nanoparticles are deposited in a single heap (see Fig. 6(c)). Depending 
  
  on the diffusivity, the heap might be highest at the centre or show a depression there; (iii) at 
  
  intermediate evaporation rates, one may observe the deposition of a nanoparticle ring around a 
  
  region with a nanoparticle ﬁlm of much lower height. At the centre deposition might increase 
  
  again (see Fig. 6(b)). 
  
  The most intriguing feature is the ring formation that has been observed experimentally for sus- 
  
  pensions of very different particle sizes ranging from nanometers [32, 36, 46, 47] to hundreds of 