Figure 5: The durability of an MRS.
From: Mechano-regulated surface for manipulating liquid droplets

(a) A nine-cycle measurement of reversible switching between the adhesive and slippery states for a 4-hydrophilic-fibre MRS. For the sliding angle measurements, 5-μl water droplets were used. (b) The contact angle of a water droplet on an MRS remains constant for pH values varying from 1 to 14, demonstrating the excellent chemical resistance of the MRS. The error bars indicate the standard deviations over five independent measurements. The insets present the silhouettes of droplets with pH values of 1 and 14 on the superhydrophobic mesh.