Figure 5
From: Zwitterionic Nanofibers of Super-Glue for Transparent and Biocompatible Multi-Purpose Coatings
Hardness and friction coefficient of the PECA coatings.
(a) Experimental data (black circles) of the Young’s modulus of the PECA textured coating as a function of the contact depth. The solid line is the best fit with Mencik’s equation. Inset: typical continuous multi-cycle curve of indentation load vs. the penetration depth for the studied coatings. The Young’s modulus was calculated from each loading-unloading cycle. (b) Friction coefficient of the PECA coating (in green) measured by diamond and steel tip. Reference materials (in grey) were used for comparison. (c) Temporal sequence of the sliding of two stainless steel cubes at different tilting angles: one coated with PECA (cube on the left) and one uncoated (cube on the right). Scale bar = 1 cm.
