Fig. 3.
Investigation of controlled growth by cryo-TEM. a–c Cryo-TEM images of 1.2-8A with varying amounts of monomer addition onto a seed. [a seed (1 mM of 8A, [1.2] = 1 mM), b seed (1 mM of 8A) + monomer (0.5 mM of 8A) ([1.2] = 1.5 mM), c seed (1 mM of 8A) + monomer (1.0 mM of 8A) ([1.2] = 2 mM)]. d Schematic representation of seeded growth. e Frequency distribution of number average lengths (Ln) obtained from the cryo-TEM images. f Linear trend between Ln and monomer to seed ratio. Scale: a 100 nm, b 200 nm, c 100 nm. Green and brown overlays in a–c point out some of many such fibers