Effects of different carbon nanoparticles on the oligomerization of Aβ16–22 peptide. Theβ-sheet propensity of Aβ16–22 octamers is reduced by (a) pristine CNT, (b) CNT-(OH), and (c) three C60 and one C180. Pristine CNTs display the strongest inhibitory effect. (d) Representative conformations of Aβ16–22 octamers in the absence and presence of four different carbon nanoparticles.