Figure 7
FFT analysis of HEK 293T alignment as a function of CNF positioning density. (a) On the substrate covered with randomly distributed nanofibers, (b) on the nanofiber-free solid substrate, (c, d) on PPy substrate covered with aligned grid patterns of CNF at different positioning densities, and (e, f) on PPy substrate covered with aligned CNF at different positioning densities for parallel patterns.