Fig. 5

SEM images at 20,000x of (a) top surface of untreated nylon membranes, (b) bottom surface of untreated nylon membranes, (c) top surface of CF4 plasma treated nylon membranes, (d) bottom surface of CF4 plasma treated nylon membranes
SEM images at 20,000x of (a) top surface of untreated nylon membranes, (b) bottom surface of untreated nylon membranes, (c) top surface of CF4 plasma treated nylon membranes, (d) bottom surface of CF4 plasma treated nylon membranes