Figure 4. (a) Field emission scanning electron microscopy (FE-SEM) images of NSP/POE-imide/AgNPnanohybrid films with a weight ratio of 1:10:35 with 5 wt% AgNPs in solution and heat-treated at (1)160 ◦C, (2) 250 ◦C, and (3) 300 ◦C for 0.5 h each. (b) (1) Cross-sectional view of nanohybrid film. (2)EDS profiles of the NSP/POE-imide/AgNP nanohybrid films with a weight ratio of 1:10:35 after heatingat 300 ◦C