Figure 2.

(a–d), SEM images and optical photographs of (a) untreated aluminum film and silver implanted aluminum films with different ion fluences of (b) 1 × 10¹⁶ cm⁻², (c) 3 × 10¹⁶ cm⁻², and (d) 5 × 10¹⁶ cm⁻². (e), Statistical analysis of the nano-island distribution of (d).