Figure 6

Scanning electron micrograph (SEM) of (a) specimen with 0% NCL and 0% NC; (b) specimen with 0% NCL and 5% NC; (c) specimen with 1% NCL and 0% NC; (d) specimen with 0.5% NCL and 3% NC.

Scanning electron micrograph (SEM) of (a) specimen with 0% NCL and 0% NC; (b) specimen with 0% NCL and 5% NC; (c) specimen with 1% NCL and 0% NC; (d) specimen with 0.5% NCL and 3% NC.