Possible implications of hydrophobic slippage on the dynamic measurements of hydrophobic forces

Abstract

It was earlier shown that capillary measurements may be interpreted in favour of hydrophobic slippage. Here, the possible implications of this phenomenon as regards the dynamic technique for the hydrophobic attractive force measurements are discussed. We demonstrate that under experimental conditions discernible deviations from the Reynolds theory due to slippage may occur. Misuse of the Reynolds theory may lead to overestimation of the hydrophobic attractive force. This apparent `extra attraction' depends critically on the driving speed, and the types of force present in the system.