text: small holes. The competition for space results in a ﬁne-meshed polygonal network of nanoparticle 
  
  deposits. The concentration of particles is much higher at the network nodes – an effect that can 
  
  not been seen within the KMC model. As the particles attract the liquid there remains some liquid 
  
  on the substrate where the nanoparticles are. 
  
  Fig. 5 gives snapshots of the evolution of a ﬁngering instability for a retracting dewetting front. 
  
  At early times the straight front shows a rather short-wave instability, about 16 wiggles can be 
  
  seen. However, they are only a transient: the ﬁnger pattern coarsens rapidly till only about 7 
  
  ﬁngers remain. The ﬁngering then becomes stationary, i.e., just as in the KMC, the mean ﬁnger 
  
  number remains constant, although new branches are continuously created and old branches join 
  
  each other. In general, the results on ﬁngering agree well with results obtained using the KMC 
  
  model [41]. From this we conclude that jamming of discrete particles is not a necessary factor 
  
  for causing the instability, since the ﬁngering is seen here in a continuum model with a diffusion 