Fig. 11. Schematic illustration of the wear mechanisms on (a) non-coating, (b) lower xylene ratio (1 : 0 and 1 : 1), and (c) higher xylene ratio (1 : 3, 1 : 5, 1 : 7, and 1 : 10) PDMS/lubricant composite-coated aluminum surfaces under dry and lubricated conditions.