text: Models of dewetting thin ﬁlms of pure liquids or polymers are often based on thin ﬁlm hydro- 
  
  dynamics. Starting from the Stokes equations, together with continuity and boundary conditions 
  
  at the substrate and free surface, one applies a long-wave approximation (assuming small surface 
  
  slopes and contact angles) [8, 63] and obtains a non-linear evolution equation for the ﬁlm thickness 
  
  proﬁle h(x, y, t). In the case of volatile liquids one ﬁnds [55–58, 64] 
  
  (cid:20) 
  Qc∇ 
  
  (cid:21) 
  
  δF 
  δh  δF 
  δh 
  − Qe 
  , 
  
  with the mobility functions Qc(h) = h3/3η ≥ 0 (assuming Poiseuille ﬂow in the ﬁlm and no slip 
  
  at the substrate; η is the dynamic viscosity) and Qe ≥ 0 for the convective and evaporative part 
  
  of the dynamics, respectively. Qe is a rate constant that can be obtained from gas kinetic theory 
  
  or from experiment [57]. Note that Eq. (1) only applies if the pressure in the vapour above the 