Dewetting describes the rupture of a thin liquid film on a substrate. In spinodal dewetting surfaces uniformly covered with nanodroplets can be manufactured. In liquid-liquid dewetting a liquid film dewets from an underlying liquid film, which in turn can also destabilize. We investigate the large variety of film morphologies resulting from liquid-liquid dewetting in a dye – PCBM blend system.
Figure: A liquid double layer may destabilize due to interfacial forces acting between all layers (a). Depending on composition (b) and layer thickness (c) a variety of film morphologies can be produced. Reprinted with permission from Langmuir 2008, 24, 7316. Copyright 2008 American Chemical Society.
J. Heier et al., Nanoscale structuring of semiconducting molecular blend films in the presence of mobile counterions, Langmuir 2008, 24, 7316.