Abstract
We used a surface forces apparatus (SFA) to investigate the drainage of thin films of undecanol from a pore consisting of two atomically smooth mica sheets. Time-resolved images of the contact area during drainage show an initial elastohydrodynamic deformation of the substrates. In the late stage, the expulsion of a molecularly thin layer of alcohol is imaged in two dimensions. We analyze the dynamics of the expulsion process and discuss the physical mechanisms in terms of a model that includes the hydrodynamic flow in the two-dimensional liquid layer and the elastic properties of the substrates. We also discuss the optical resolution required to observe layering transitions in two dimensions and present a new design of a SFA optimized for these purposes.
Original language | Undefined |
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Pages (from-to) | 105-113 |
Journal | Colloids and surfaces A: Physicochemical and engineering aspects |
Volume | 206 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2002 |
Keywords
- IR-57260