Fig. 2From: A Simple Laser Ablation-Assisted Method for Fabrication of Superhydrophobic SERS Substrate on Teflon Filma The SEM images of substrate surface about original PTFE and engraved PTFE and corresponding static contact angle images; b Evaporation profiles of solution on the original PTFE; c Evaporation profiles of solution on the engraved PTFEBack to article page