An experimental study has been presented to validate the applicability of Wenzel and Cassie-Baxter theories for wetting of textured surfaces placed under-water. Silicon based micro-patterned substrates are fabricated and careful experimental investigation has been performed to study the wetting signature of oil drops on these substrates when placed under-water. On analysis of relevant experimental data (macroscopic advancing, equilibrium and receding contact angles), it has been found that they are inconsistent with the Wenzel and Cassie-Baxter wetting theories.

This content is only available via PDF.
You do not currently have access to this content.